diff --git a/Makefile b/Makefile
index ab3f8f1792..6a03833eba 100644
--- a/Makefile
+++ b/Makefile
@@ -487,7 +487,6 @@ ifeq ($(HAVE_7ZIP),1)
 		deps/7zip/7zFile.o \
 		deps/7zip/7zStream.o \
 		deps/7zip/7zBuf2.o \
-		deps/7zip/Ppmd7.o \
 		deps/7zip/LzmaDec.o \
 		deps/7zip/7zCrcOpt.o \
 		deps/7zip/Bra.o \
@@ -496,7 +495,6 @@ ifeq ($(HAVE_7ZIP),1)
 		deps/7zip/7zCrc.o \
 		deps/7zip/Lzma2Dec.o \
 		deps/7zip/7zBuf.o \
-		deps/7zip/Ppmd7Dec.o \
 		decompress/7zip_support.o 
    OBJ += $(7ZOBJ)
    RETROLAUNCH_OBJ += $(7ZOBJ)
diff --git a/Makefile.win b/Makefile.win
index c790343d1f..d3ca47619c 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -314,7 +314,6 @@ ifeq ($(HAVE_7ZIP),1)
 		deps/7zip/7zFile.o \
 		deps/7zip/7zStream.o \
 		deps/7zip/7zBuf2.o \
-		deps/7zip/Ppmd7.o \
 		deps/7zip/LzmaDec.o \
 		deps/7zip/7zCrcOpt.o \
 		deps/7zip/Bra.o \
@@ -323,7 +322,6 @@ ifeq ($(HAVE_7ZIP),1)
 		deps/7zip/7zCrc.o \
 		deps/7zip/Lzma2Dec.o \
 		deps/7zip/7zBuf.o \
-		deps/7zip/Ppmd7Dec.o \
 		decompress/7zip_support.o 
    OBJ += $(7ZOBJ)
    RETROLAUNCH_OBJ += $(7ZOBJ)
diff --git a/deps/7zip/Ppmd.h b/deps/7zip/Ppmd.h
deleted file mode 100755
index 24c1961160..0000000000
--- a/deps/7zip/Ppmd.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* Ppmd.h -- PPMD codec common code
-2010-03-12 : Igor Pavlov : Public domain
-This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */
-
-#ifndef __PPMD_H
-#define __PPMD_H
-
-#include "Types.h"
-#include "CpuArch.h"
-
-EXTERN_C_BEGIN
-
-#ifdef MY_CPU_32BIT
-  #define PPMD_32BIT
-#endif
-
-#define PPMD_INT_BITS 7
-#define PPMD_PERIOD_BITS 7
-#define PPMD_BIN_SCALE (1 << (PPMD_INT_BITS + PPMD_PERIOD_BITS))
-
-#define PPMD_GET_MEAN_SPEC(summ, shift, round) (((summ) + (1 << ((shift) - (round)))) >> (shift))
-#define PPMD_GET_MEAN(summ) PPMD_GET_MEAN_SPEC((summ), PPMD_PERIOD_BITS, 2)
-#define PPMD_UPDATE_PROB_0(prob) ((prob) + (1 << PPMD_INT_BITS) - PPMD_GET_MEAN(prob))
-#define PPMD_UPDATE_PROB_1(prob) ((prob) - PPMD_GET_MEAN(prob))
-
-#define PPMD_N1 4
-#define PPMD_N2 4
-#define PPMD_N3 4
-#define PPMD_N4 ((128 + 3 - 1 * PPMD_N1 - 2 * PPMD_N2 - 3 * PPMD_N3) / 4)
-#define PPMD_NUM_INDEXES (PPMD_N1 + PPMD_N2 + PPMD_N3 + PPMD_N4)
-
-/* SEE-contexts for PPM-contexts with masked symbols */
-typedef struct
-{
-  UInt16 Summ; /* Freq */
-  Byte Shift;  /* Speed of Freq change; low Shift is for fast change */
-  Byte Count;  /* Count to next change of Shift */
-} CPpmd_See;
-
-#define Ppmd_See_Update(p)  if ((p)->Shift < PPMD_PERIOD_BITS && --(p)->Count == 0) \
-    { (p)->Summ <<= 1; (p)->Count = (Byte)(3 << (p)->Shift++); }
-
-typedef struct
-{
-  Byte Symbol;
-  Byte freq;
-  UInt16 SuccessorLow;
-  UInt16 SuccessorHigh;
-} CPpmd_State;
-
-typedef
-  #ifdef PPMD_32BIT
-    CPpmd_State *
-  #else
-    UInt32
-  #endif
-  CPpmd_State_Ref;
-
-typedef
-  #ifdef PPMD_32BIT
-    void *
-  #else
-    UInt32
-  #endif
-  CPpmd_Void_Ref;
-
-typedef
-  #ifdef PPMD_32BIT
-    Byte *
-  #else
-    UInt32
-  #endif
-  CPpmd_Byte_Ref;
-
-#define PPMD_SetAllBitsIn256Bytes(p) \
-  { unsigned i; for (i = 0; i < 256 / sizeof(p[0]); i += 8) { \
-  p[i+7] = p[i+6] = p[i+5] = p[i+4] = p[i+3] = p[i+2] = p[i+1] = p[i+0] = ~(size_t)0; }}
-
-EXTERN_C_END
- 
-#endif
diff --git a/deps/7zip/Ppmd7.c b/deps/7zip/Ppmd7.c
deleted file mode 100755
index 3009cf6cde..0000000000
--- a/deps/7zip/Ppmd7.c
+++ /dev/null
@@ -1,707 +0,0 @@
-/* Ppmd7.c -- PPMdH codec
-2010-03-12 : Igor Pavlov : Public domain
-This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */
-
-#include <string.h>
-#include "Ppmd7.h"
-
-const Byte PPMD7_kExpEscape[16] = { 25, 14, 9, 7, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2 };
-static const UInt16 kInitBinEsc[] = { 0x3CDD, 0x1F3F, 0x59BF, 0x48F3, 0x64A1, 0x5ABC, 0x6632, 0x6051};
-
-#define MAX_FREQ 124
-#define UNIT_SIZE 12
-
-#define U2B(nu) ((UInt32)(nu) * UNIT_SIZE)
-#define U2I(nu) (p->Units2Indx[(nu) - 1])
-#define I2U(indx) (p->Indx2Units[indx])
-
-#ifdef PPMD_32BIT
-  #define REF(ptr) (ptr)
-#else
-  #define REF(ptr) ((UInt32)((Byte *)(ptr) - (p)->Base))
-#endif
-
-#define STATS_REF(ptr) ((CPpmd_State_Ref)REF(ptr))
-
-#define CTX(ref) ((CPpmd7_Context *)Ppmd7_GetContext(p, ref))
-#define STATS(ctx) Ppmd7_GetStats(p, ctx)
-#define ONE_STATE(ctx) Ppmd7Context_OneState(ctx)
-#define SUFFIX(ctx) CTX((ctx)->Suffix)
-
-typedef CPpmd7_Context * CTX_PTR;
-
-struct CPpmd7_Node_;
-
-typedef
-  #ifdef PPMD_32BIT
-    struct CPpmd7_Node_ *
-  #else
-    UInt32
-  #endif
-  CPpmd7_Node_Ref;
-
-typedef struct CPpmd7_Node_
-{
-  UInt16 Stamp; /* must be at offset 0 as CPpmd7_Context::NumStats. Stamp=0 means free */
-  UInt16 NU;
-  CPpmd7_Node_Ref Next; /* must be at offset >= 4 */
-  CPpmd7_Node_Ref Prev;
-} CPpmd7_Node;
-
-#ifdef PPMD_32BIT
-  #define NODE(ptr) (ptr)
-#else
-  #define NODE(offs) ((CPpmd7_Node *)(p->Base + (offs)))
-#endif
-
-void Ppmd7_Construct(CPpmd7 *p)
-{
-  unsigned i, k, m;
-
-  p->Base = 0;
-
-  for (i = 0, k = 0; i < PPMD_NUM_INDEXES; i++)
-  {
-    unsigned step = (i >= 12 ? 4 : (i >> 2) + 1);
-    do { p->Units2Indx[k++] = (Byte)i; } while(--step);
-    p->Indx2Units[i] = (Byte)k;
-  }
-
-  p->NS2BSIndx[0] = (0 << 1);
-  p->NS2BSIndx[1] = (1 << 1);
-  memset(p->NS2BSIndx + 2, (2 << 1), 9);
-  memset(p->NS2BSIndx + 11, (3 << 1), 256 - 11);
-
-  for (i = 0; i < 3; i++)
-    p->NS2Indx[i] = (Byte)i;
-  for (m = i, k = 1; i < 256; i++)
-  {
-    p->NS2Indx[i] = (Byte)m;
-    if (--k == 0)
-      k = (++m) - 2;
-  }
-
-  memset(p->HB2Flag, 0, 0x40);
-  memset(p->HB2Flag + 0x40, 8, 0x100 - 0x40);
-}
-
-void Ppmd7_Free(CPpmd7 *p, ISzAlloc *alloc)
-{
-  alloc->Free(alloc, p->Base);
-  p->Size = 0;
-  p->Base = 0;
-}
-
-Bool Ppmd7_Alloc(CPpmd7 *p, UInt32 size, ISzAlloc *alloc)
-{
-  if (p->Base == 0 || p->Size != size)
-  {
-    Ppmd7_Free(p, alloc);
-    p->AlignOffset =
-      #ifdef PPMD_32BIT
-        (4 - size) & 3;
-      #else
-        4 - (size & 3);
-      #endif
-    if ((p->Base = (Byte *)alloc->Alloc(alloc, p->AlignOffset + size
-        #ifndef PPMD_32BIT
-        + UNIT_SIZE
-        #endif
-        )) == 0)
-      return False;
-    p->Size = size;
-  }
-  return True;
-}
-
-static void InsertNode(CPpmd7 *p, void *node, unsigned indx)
-{
-  *((CPpmd_Void_Ref *)node) = p->FreeList[indx];
-  p->FreeList[indx] = REF(node);
-}
-
-static void *RemoveNode(CPpmd7 *p, unsigned indx)
-{
-  CPpmd_Void_Ref *node = (CPpmd_Void_Ref *)Ppmd7_GetPtr(p, p->FreeList[indx]);
-  p->FreeList[indx] = *node;
-  return node;
-}
-
-static void SplitBlock(CPpmd7 *p, void *ptr, unsigned oldIndx, unsigned newIndx)
-{
-  unsigned i, nu = I2U(oldIndx) - I2U(newIndx);
-  ptr = (Byte *)ptr + U2B(I2U(newIndx));
-  if (I2U(i = U2I(nu)) != nu)
-  {
-    unsigned k = I2U(--i);
-    InsertNode(p, ((Byte *)ptr) + U2B(k), nu - k - 1);
-  }
-  InsertNode(p, ptr, i);
-}
-
-static void GlueFreeBlocks(CPpmd7 *p)
-{
-  #ifdef PPMD_32BIT
-  CPpmd7_Node headItem;
-  CPpmd7_Node_Ref head = &headItem;
-  #else
-  CPpmd7_Node_Ref head = p->AlignOffset + p->Size;
-  #endif
-  
-  CPpmd7_Node_Ref n = head;
-  unsigned i;
-
-  p->GlueCount = 255;
-
-  /* create doubly-linked list of free blocks */
-  for (i = 0; i < PPMD_NUM_INDEXES; i++)
-  {
-    UInt16 nu = I2U(i);
-    CPpmd7_Node_Ref next = (CPpmd7_Node_Ref)p->FreeList[i];
-    p->FreeList[i] = 0;
-    while (next != 0)
-    {
-      CPpmd7_Node *node = NODE(next);
-      node->Next = n;
-      n = NODE(n)->Prev = next;
-      next = *(const CPpmd7_Node_Ref *)node;
-      node->Stamp = 0;
-      node->NU = (UInt16)nu;
-    }
-  }
-  NODE(head)->Stamp = 1;
-  NODE(head)->Next = n;
-  NODE(n)->Prev = head;
-  if (p->LoUnit != p->HiUnit)
-    ((CPpmd7_Node *)p->LoUnit)->Stamp = 1;
-  
-  /* Glue free blocks */
-  while (n != head)
-  {
-    CPpmd7_Node *node = NODE(n);
-    UInt32 nu = (UInt32)node->NU;
-    for (;;)
-    {
-      CPpmd7_Node *node2 = NODE(n) + nu;
-      nu += node2->NU;
-      if (node2->Stamp != 0 || nu >= 0x10000)
-        break;
-      NODE(node2->Prev)->Next = node2->Next;
-      NODE(node2->Next)->Prev = node2->Prev;
-      node->NU = (UInt16)nu;
-    }
-    n = node->Next;
-  }
-  
-  /* Fill lists of free blocks */
-  for (n = NODE(head)->Next; n != head;)
-  {
-    CPpmd7_Node *node = NODE(n);
-    unsigned nu;
-    CPpmd7_Node_Ref next = node->Next;
-    for (nu = node->NU; nu > 128; nu -= 128, node += 128)
-      InsertNode(p, node, PPMD_NUM_INDEXES - 1);
-    if (I2U(i = U2I(nu)) != nu)
-    {
-      unsigned k = I2U(--i);
-      InsertNode(p, node + k, nu - k - 1);
-    }
-    InsertNode(p, node, i);
-    n = next;
-  }
-}
-
-static void *AllocUnitsRare(CPpmd7 *p, unsigned indx)
-{
-  unsigned i;
-  void *retVal;
-  if (p->GlueCount == 0)
-  {
-    GlueFreeBlocks(p);
-    if (p->FreeList[indx] != 0)
-      return RemoveNode(p, indx);
-  }
-  i = indx;
-  do
-  {
-    if (++i == PPMD_NUM_INDEXES)
-    {
-      UInt32 numBytes = U2B(I2U(indx));
-      p->GlueCount--;
-      return ((UInt32)(p->UnitsStart - p->Text) > numBytes) ? (p->UnitsStart -= numBytes) : (NULL);
-    }
-  }
-  while (p->FreeList[i] == 0);
-  retVal = RemoveNode(p, i);
-  SplitBlock(p, retVal, i, indx);
-  return retVal;
-}
-
-static void *AllocUnits(CPpmd7 *p, unsigned indx)
-{
-  UInt32 numBytes;
-  if (p->FreeList[indx] != 0)
-    return RemoveNode(p, indx);
-  numBytes = U2B(I2U(indx));
-  if (numBytes <= (UInt32)(p->HiUnit - p->LoUnit))
-  {
-    void *retVal = p->LoUnit;
-    p->LoUnit += numBytes;
-    return retVal;
-  }
-  return AllocUnitsRare(p, indx);
-}
-
-#define MyMem12Cpy(dest, src, num) \
-  { UInt32 *d = (UInt32 *)dest; const UInt32 *s = (const UInt32 *)src; UInt32 n = num; \
-    do { d[0] = s[0]; d[1] = s[1]; d[2] = s[2]; s += 3; d += 3; } while(--n); }
-
-static void *ShrinkUnits(CPpmd7 *p, void *oldPtr, unsigned oldNU, unsigned newNU)
-{
-  unsigned i0 = U2I(oldNU);
-  unsigned i1 = U2I(newNU);
-  if (i0 == i1)
-    return oldPtr;
-  if (p->FreeList[i1] != 0)
-  {
-    void *ptr = RemoveNode(p, i1);
-    MyMem12Cpy(ptr, oldPtr, newNU);
-    InsertNode(p, oldPtr, i0);
-    return ptr;
-  }
-  SplitBlock(p, oldPtr, i0, i1);
-  return oldPtr;
-}
-
-#define SUCCESSOR(p) ((CPpmd_Void_Ref)((p)->SuccessorLow | ((UInt32)(p)->SuccessorHigh << 16)))
-
-static void SetSuccessor(CPpmd_State *p, CPpmd_Void_Ref v)
-{
-  (p)->SuccessorLow = (UInt16)((UInt32)(v) & 0xFFFF);
-  (p)->SuccessorHigh = (UInt16)(((UInt32)(v) >> 16) & 0xFFFF);
-}
-
-static void RestartModel(CPpmd7 *p)
-{
-  unsigned i, k, m;
-
-  memset(p->FreeList, 0, sizeof(p->FreeList));
-  p->Text = p->Base + p->AlignOffset;
-  p->HiUnit = p->Text + p->Size;
-  p->LoUnit = p->UnitsStart = p->HiUnit - p->Size / 8 / UNIT_SIZE * 7 * UNIT_SIZE;
-  p->GlueCount = 0;
-
-  p->OrderFall = p->MaxOrder;
-  p->RunLength = p->InitRL = -(Int32)((p->MaxOrder < 12) ? p->MaxOrder : 12) - 1;
-  p->PrevSuccess = 0;
-
-  p->MinContext = p->MaxContext = (CTX_PTR)(p->HiUnit -= UNIT_SIZE); /* AllocContext(p); */
-  p->MinContext->Suffix = 0;
-  p->MinContext->NumStats = 256;
-  p->MinContext->SummFreq = 256 + 1;
-  p->FoundState = (CPpmd_State *)p->LoUnit; /* AllocUnits(p, PPMD_NUM_INDEXES - 1); */
-  p->LoUnit += U2B(256 / 2);
-  p->MinContext->Stats = REF(p->FoundState);
-  for (i = 0; i < 256; i++)
-  {
-    CPpmd_State *s = &p->FoundState[i];
-    s->Symbol = (Byte)i;
-    s->freq = 1;
-    SetSuccessor(s, 0);
-  }
-
-  for (i = 0; i < 128; i++)
-    for (k = 0; k < 8; k++)
-    {
-      UInt16 *dest = p->BinSumm[i] + k;
-      UInt16 val = (UInt16)(PPMD_BIN_SCALE - kInitBinEsc[k] / (i + 2));
-      for (m = 0; m < 64; m += 8)
-        dest[m] = val;
-    }
-  
-  for (i = 0; i < 25; i++)
-    for (k = 0; k < 16; k++)
-    {
-      CPpmd_See *s = &p->See[i][k];
-      s->Summ = (UInt16)((5 * i + 10) << (s->Shift = PPMD_PERIOD_BITS - 4));
-      s->Count = 4;
-    }
-}
-
-void Ppmd7_Init(CPpmd7 *p, unsigned maxOrder)
-{
-  p->MaxOrder = maxOrder;
-  RestartModel(p);
-  p->DummySee.Shift = PPMD_PERIOD_BITS;
-  p->DummySee.Summ = 0; /* unused */
-  p->DummySee.Count = 64; /* unused */
-}
-
-static CTX_PTR CreateSuccessors(CPpmd7 *p, Bool skip)
-{
-  CPpmd_State upState;
-  CTX_PTR c = p->MinContext;
-  CPpmd_Byte_Ref upBranch = (CPpmd_Byte_Ref)SUCCESSOR(p->FoundState);
-  CPpmd_State *ps[PPMD7_MAX_ORDER];
-  unsigned numPs = 0;
-  
-  if (!skip)
-    ps[numPs++] = p->FoundState;
-  
-  while (c->Suffix)
-  {
-    CPpmd_Void_Ref successor;
-    CPpmd_State *s;
-    c = SUFFIX(c);
-    if (c->NumStats != 1)
-    {
-      for (s = STATS(c); s->Symbol != p->FoundState->Symbol; s++);
-    }
-    else
-      s = ONE_STATE(c);
-    successor = SUCCESSOR(s);
-    if (successor != upBranch)
-    {
-      c = CTX(successor);
-      if (numPs == 0)
-        return c;
-      break;
-    }
-    ps[numPs++] = s;
-  }
-  
-  upState.Symbol = *(const Byte *)Ppmd7_GetPtr(p, upBranch);
-  SetSuccessor(&upState, upBranch + 1);
-  
-  if (c->NumStats == 1)
-    upState.freq = ONE_STATE(c)->freq;
-  else
-  {
-    UInt32 cf, s0;
-    CPpmd_State *s;
-    for (s = STATS(c); s->Symbol != upState.Symbol; s++);
-    cf = s->freq - 1;
-    s0 = c->SummFreq - c->NumStats - cf;
-    upState.freq = (Byte)(1 + ((2 * cf <= s0) ? (5 * cf > s0) : ((2 * cf + 3 * s0 - 1) / (2 * s0))));
-  }
-
-  do
-  {
-    /* Create Child */
-    CTX_PTR c1; /* = AllocContext(p); */
-    if (p->HiUnit != p->LoUnit)
-      c1 = (CTX_PTR)(p->HiUnit -= UNIT_SIZE);
-    else if (p->FreeList[0] != 0)
-      c1 = (CTX_PTR)RemoveNode(p, 0);
-    else
-    {
-      c1 = (CTX_PTR)AllocUnitsRare(p, 0);
-      if (!c1)
-        return NULL;
-    }
-    c1->NumStats = 1;
-    *ONE_STATE(c1) = upState;
-    c1->Suffix = REF(c);
-    SetSuccessor(ps[--numPs], REF(c1));
-    c = c1;
-  }
-  while (numPs != 0);
-  
-  return c;
-}
-
-static void SwapStates(CPpmd_State *t1, CPpmd_State *t2)
-{
-  CPpmd_State tmp = *t1;
-  *t1 = *t2;
-  *t2 = tmp;
-}
-
-static void UpdateModel(CPpmd7 *p)
-{
-  CPpmd_Void_Ref successor, fSuccessor = SUCCESSOR(p->FoundState);
-  CTX_PTR c;
-  unsigned s0, ns;
-  
-  if (p->FoundState->freq < MAX_FREQ / 4 && p->MinContext->Suffix != 0)
-  {
-    c = SUFFIX(p->MinContext);
-    
-    if (c->NumStats == 1)
-    {
-      CPpmd_State *s = ONE_STATE(c);
-      if (s->freq < 32)
-        s->freq++;
-    }
-    else
-    {
-      CPpmd_State *s = STATS(c);
-      if (s->Symbol != p->FoundState->Symbol)
-      {
-        do { s++; } while (s->Symbol != p->FoundState->Symbol);
-        if (s[0].freq >= s[-1].freq)
-        {
-          SwapStates(&s[0], &s[-1]);
-          s--;
-        }
-      }
-      if (s->freq < MAX_FREQ - 9)
-      {
-        s->freq += 2;
-        c->SummFreq += 2;
-      }
-    }
-  }
-
-  if (p->OrderFall == 0)
-  {
-    p->MinContext = p->MaxContext = CreateSuccessors(p, True);
-    if (p->MinContext == 0)
-    {
-      RestartModel(p);
-      return;
-    }
-    SetSuccessor(p->FoundState, REF(p->MinContext));
-    return;
-  }
-  
-  *p->Text++ = p->FoundState->Symbol;
-  successor = REF(p->Text);
-  if (p->Text >= p->UnitsStart)
-  {
-    RestartModel(p);
-    return;
-  }
-  
-  if (fSuccessor)
-  {
-    if (fSuccessor <= successor)
-    {
-      CTX_PTR cs = CreateSuccessors(p, False);
-      if (cs == NULL)
-      {
-        RestartModel(p);
-        return;
-      }
-      fSuccessor = REF(cs);
-    }
-    if (--p->OrderFall == 0)
-    {
-      successor = fSuccessor;
-      p->Text -= (p->MaxContext != p->MinContext);
-    }
-  }
-  else
-  {
-    SetSuccessor(p->FoundState, successor);
-    fSuccessor = REF(p->MinContext);
-  }
-  
-  s0 = p->MinContext->SummFreq - (ns = p->MinContext->NumStats) - (p->FoundState->freq - 1);
-  
-  for (c = p->MaxContext; c != p->MinContext; c = SUFFIX(c))
-  {
-    unsigned ns1;
-    UInt32 cf, sf;
-    if ((ns1 = c->NumStats) != 1)
-    {
-      if ((ns1 & 1) == 0)
-      {
-        /* Expand for one UNIT */
-        unsigned oldNU = ns1 >> 1;
-        unsigned i = U2I(oldNU);
-        if (i != U2I(oldNU + 1))
-        {
-          void *ptr = AllocUnits(p, i + 1);
-          void *oldPtr;
-          if (!ptr)
-          {
-            RestartModel(p);
-            return;
-          }
-          oldPtr = STATS(c);
-          MyMem12Cpy(ptr, oldPtr, oldNU);
-          InsertNode(p, oldPtr, i);
-          c->Stats = STATS_REF(ptr);
-        }
-      }
-      c->SummFreq = (UInt16)(c->SummFreq + (2 * ns1 < ns) + 2 * ((4 * ns1 <= ns) & (c->SummFreq <= 8 * ns1)));
-    }
-    else
-    {
-      CPpmd_State *s = (CPpmd_State*)AllocUnits(p, 0);
-      if (!s)
-      {
-        RestartModel(p);
-        return;
-      }
-      *s = *ONE_STATE(c);
-      c->Stats = REF(s);
-      if (s->freq < MAX_FREQ / 4 - 1)
-        s->freq <<= 1;
-      else
-        s->freq = MAX_FREQ - 4;
-      c->SummFreq = (UInt16)(s->freq + p->InitEsc + (ns > 3));
-    }
-    cf = 2 * (UInt32)p->FoundState->freq * (c->SummFreq + 6);
-    sf = (UInt32)s0 + c->SummFreq;
-    if (cf < 6 * sf)
-    {
-      cf = 1 + (cf > sf) + (cf >= 4 * sf);
-      c->SummFreq += 3;
-    }
-    else
-    {
-      cf = 4 + (cf >= 9 * sf) + (cf >= 12 * sf) + (cf >= 15 * sf);
-      c->SummFreq = (UInt16)(c->SummFreq + cf);
-    }
-    {
-      CPpmd_State *s = STATS(c) + ns1;
-      SetSuccessor(s, successor);
-      s->Symbol = p->FoundState->Symbol;
-      s->freq = (Byte)cf;
-      c->NumStats = (UInt16)(ns1 + 1);
-    }
-  }
-  p->MaxContext = p->MinContext = CTX(fSuccessor);
-}
-  
-static void Rescale(CPpmd7 *p)
-{
-  unsigned i, adder, sumFreq, escFreq;
-  CPpmd_State *stats = STATS(p->MinContext);
-  CPpmd_State *s = p->FoundState;
-  {
-    CPpmd_State tmp = *s;
-    for (; s != stats; s--)
-      s[0] = s[-1];
-    *s = tmp;
-  }
-  escFreq = p->MinContext->SummFreq - s->freq;
-  s->freq += 4;
-  adder = (p->OrderFall != 0);
-  s->freq = (Byte)((s->freq + adder) >> 1);
-  sumFreq = s->freq;
-  
-  i = p->MinContext->NumStats - 1;
-  do
-  {
-    escFreq -= (++s)->freq;
-    s->freq = (Byte)((s->freq + adder) >> 1);
-    sumFreq += s->freq;
-    if (s[0].freq > s[-1].freq)
-    {
-      CPpmd_State *s1 = s;
-      CPpmd_State tmp = *s1;
-      do
-        s1[0] = s1[-1];
-      while (--s1 != stats && tmp.freq > s1[-1].freq);
-      *s1 = tmp;
-    }
-  }
-  while (--i);
-  
-  if (s->freq == 0)
-  {
-    unsigned numStats = p->MinContext->NumStats;
-    unsigned n0, n1;
-    do { i++; } while ((--s)->freq == 0);
-    escFreq += i;
-    p->MinContext->NumStats = (UInt16)(p->MinContext->NumStats - i);
-    if (p->MinContext->NumStats == 1)
-    {
-      CPpmd_State tmp = *stats;
-      do
-      {
-        tmp.freq = (Byte)(tmp.freq - (tmp.freq >> 1));
-        escFreq >>= 1;
-      }
-      while (escFreq > 1);
-      InsertNode(p, stats, U2I(((numStats + 1) >> 1)));
-      *(p->FoundState = ONE_STATE(p->MinContext)) = tmp;
-      return;
-    }
-    n0 = (numStats + 1) >> 1;
-    n1 = (p->MinContext->NumStats + 1) >> 1;
-    if (n0 != n1)
-      p->MinContext->Stats = STATS_REF(ShrinkUnits(p, stats, n0, n1));
-  }
-  p->MinContext->SummFreq = (UInt16)(sumFreq + escFreq - (escFreq >> 1));
-  p->FoundState = STATS(p->MinContext);
-}
-
-CPpmd_See *Ppmd7_MakeEscFreq(CPpmd7 *p, unsigned numMasked, UInt32 *escFreq)
-{
-  CPpmd_See *see;
-  unsigned nonMasked = p->MinContext->NumStats - numMasked;
-  if (p->MinContext->NumStats != 256)
-  {
-    see = p->See[p->NS2Indx[nonMasked - 1]] +
-        (nonMasked < (unsigned)SUFFIX(p->MinContext)->NumStats - p->MinContext->NumStats) +
-        2 * (p->MinContext->SummFreq < 11 * p->MinContext->NumStats) +
-        4 * (numMasked > nonMasked) +
-        p->HiBitsFlag;
-    {
-      unsigned r = (see->Summ >> see->Shift);
-      see->Summ = (UInt16)(see->Summ - r);
-      *escFreq = r + (r == 0);
-    }
-  }
-  else
-  {
-    see = &p->DummySee;
-    *escFreq = 1;
-  }
-  return see;
-}
-
-static void NextContext(CPpmd7 *p)
-{
-  CTX_PTR c = CTX(SUCCESSOR(p->FoundState));
-  if (p->OrderFall == 0 && (Byte *)c > p->Text)
-    p->MinContext = p->MaxContext = c;
-  else
-    UpdateModel(p);
-}
-
-void Ppmd7_Update1(CPpmd7 *p)
-{
-  CPpmd_State *s = p->FoundState;
-  s->freq += 4;
-  p->MinContext->SummFreq += 4;
-  if (s[0].freq > s[-1].freq)
-  {
-    SwapStates(&s[0], &s[-1]);
-    p->FoundState = --s;
-    if (s->freq > MAX_FREQ)
-      Rescale(p);
-  }
-  NextContext(p);
-}
-
-void Ppmd7_Update1_0(CPpmd7 *p)
-{
-  p->PrevSuccess = (2 * p->FoundState->freq > p->MinContext->SummFreq);
-  p->RunLength += p->PrevSuccess;
-  p->MinContext->SummFreq += 4;
-  if ((p->FoundState->freq += 4) > MAX_FREQ)
-    Rescale(p);
-  NextContext(p);
-}
-
-void Ppmd7_UpdateBin(CPpmd7 *p)
-{
-  p->FoundState->freq = (Byte)(p->FoundState->freq + (p->FoundState->freq < 128 ? 1: 0));
-  p->PrevSuccess = 1;
-  p->RunLength++;
-  NextContext(p);
-}
-
-void Ppmd7_Update2(CPpmd7 *p)
-{
-  p->MinContext->SummFreq += 4;
-  if ((p->FoundState->freq += 4) > MAX_FREQ)
-    Rescale(p);
-  p->RunLength = p->InitRL;
-  UpdateModel(p);
-}
diff --git a/deps/7zip/Ppmd7.h b/deps/7zip/Ppmd7.h
deleted file mode 100755
index 68f021f915..0000000000
--- a/deps/7zip/Ppmd7.h
+++ /dev/null
@@ -1,140 +0,0 @@
-/* Ppmd7.h -- PPMdH compression codec
-2010-03-12 : Igor Pavlov : Public domain
-This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */
-
-/* This code supports virtual RangeDecoder and includes the implementation
-of RangeCoder from 7z, instead of RangeCoder from original PPMd var.H.
-If you need the compatibility with original PPMd var.H, you can use external RangeDecoder */
-
-#ifndef __PPMD7_H
-#define __PPMD7_H
-
-#include "Ppmd.h"
-
-EXTERN_C_BEGIN
-
-#define PPMD7_MIN_ORDER 2
-#define PPMD7_MAX_ORDER 64
-
-#define PPMD7_MIN_MEM_SIZE (1 << 11)
-#define PPMD7_MAX_MEM_SIZE (0xFFFFFFFF - 12 * 3)
-
-struct CPpmd7_Context_;
-
-typedef
-  #ifdef PPMD_32BIT
-    struct CPpmd7_Context_ *
-  #else
-    UInt32
-  #endif
-  CPpmd7_Context_Ref;
-
-typedef struct CPpmd7_Context_
-{
-  UInt16 NumStats;
-  UInt16 SummFreq;
-  CPpmd_State_Ref Stats;
-  CPpmd7_Context_Ref Suffix;
-} CPpmd7_Context;
-
-#define Ppmd7Context_OneState(p) ((CPpmd_State *)&(p)->SummFreq)
-
-typedef struct
-{
-  CPpmd7_Context *MinContext, *MaxContext;
-  CPpmd_State *FoundState;
-  unsigned OrderFall, InitEsc, PrevSuccess, MaxOrder, HiBitsFlag;
-  Int32 RunLength, InitRL; /* must be 32-bit at least */
-
-  UInt32 Size;
-  UInt32 GlueCount;
-  Byte *Base, *LoUnit, *HiUnit, *Text, *UnitsStart;
-  UInt32 AlignOffset;
-
-  Byte Indx2Units[PPMD_NUM_INDEXES];
-  Byte Units2Indx[128];
-  CPpmd_Void_Ref FreeList[PPMD_NUM_INDEXES];
-  Byte NS2Indx[256], NS2BSIndx[256], HB2Flag[256];
-  CPpmd_See DummySee, See[25][16];
-  UInt16 BinSumm[128][64];
-} CPpmd7;
-
-void Ppmd7_Construct(CPpmd7 *p);
-Bool Ppmd7_Alloc(CPpmd7 *p, UInt32 size, ISzAlloc *alloc);
-void Ppmd7_Free(CPpmd7 *p, ISzAlloc *alloc);
-void Ppmd7_Init(CPpmd7 *p, unsigned maxOrder);
-#define Ppmd7_WasAllocated(p) ((p)->Base != NULL)
-
-
-/* ---------- Internal Functions ---------- */
-
-extern const Byte PPMD7_kExpEscape[16];
-
-#ifdef PPMD_32BIT
-  #define Ppmd7_GetPtr(p, ptr) (ptr)
-  #define Ppmd7_GetContext(p, ptr) (ptr)
-  #define Ppmd7_GetStats(p, ctx) ((ctx)->Stats)
-#else
-  #define Ppmd7_GetPtr(p, offs) ((void *)((p)->Base + (offs)))
-  #define Ppmd7_GetContext(p, offs) ((CPpmd7_Context *)Ppmd7_GetPtr((p), (offs)))
-  #define Ppmd7_GetStats(p, ctx) ((CPpmd_State *)Ppmd7_GetPtr((p), ((ctx)->Stats)))
-#endif
-
-void Ppmd7_Update1(CPpmd7 *p);
-void Ppmd7_Update1_0(CPpmd7 *p);
-void Ppmd7_Update2(CPpmd7 *p);
-void Ppmd7_UpdateBin(CPpmd7 *p);
-
-#define Ppmd7_GetBinSumm(p) \
-    &p->BinSumm[Ppmd7Context_OneState(p->MinContext)->freq - 1][p->PrevSuccess + \
-    p->NS2BSIndx[Ppmd7_GetContext(p, p->MinContext->Suffix)->NumStats - 1] + \
-    (p->HiBitsFlag = p->HB2Flag[p->FoundState->Symbol]) + \
-    2 * p->HB2Flag[Ppmd7Context_OneState(p->MinContext)->Symbol] + \
-    ((p->RunLength >> 26) & 0x20)]
-
-CPpmd_See *Ppmd7_MakeEscFreq(CPpmd7 *p, unsigned numMasked, UInt32 *scale);
-
-
-/* ---------- Decode ---------- */
-
-typedef struct
-{
-  UInt32 (*GetThreshold)(void *p, UInt32 total);
-  void (*Decode)(void *p, UInt32 start, UInt32 size);
-  UInt32 (*DecodeBit)(void *p, UInt32 size0);
-} IPpmd7_RangeDec;
-
-typedef struct
-{
-  IPpmd7_RangeDec p;
-  UInt32 Range;
-  UInt32 code;
-  IByteIn *Stream;
-} CPpmd7z_RangeDec;
-
-void Ppmd7z_RangeDec_CreateVTable(CPpmd7z_RangeDec *p);
-Bool Ppmd7z_RangeDec_Init(CPpmd7z_RangeDec *p);
-#define Ppmd7z_RangeDec_IsFinishedOK(p) ((p)->Code == 0)
-
-int Ppmd7_DecodeSymbol(CPpmd7 *p, IPpmd7_RangeDec *rc);
-
-
-/* ---------- Encode ---------- */
-
-typedef struct
-{
-  UInt64 Low;
-  UInt32 Range;
-  Byte Cache;
-  UInt64 CacheSize;
-  IByteOut *Stream;
-} CPpmd7z_RangeEnc;
-
-void Ppmd7z_RangeEnc_Init(CPpmd7z_RangeEnc *p);
-void Ppmd7z_RangeEnc_FlushData(CPpmd7z_RangeEnc *p);
-
-void Ppmd7_EncodeSymbol(CPpmd7 *p, CPpmd7z_RangeEnc *rc, int symbol);
-
-EXTERN_C_END
- 
-#endif
diff --git a/deps/7zip/Ppmd7Dec.c b/deps/7zip/Ppmd7Dec.c
deleted file mode 100755
index 6971643da0..0000000000
--- a/deps/7zip/Ppmd7Dec.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/* Ppmd7Dec.c -- PPMdH Decoder
-2010-03-12 : Igor Pavlov : Public domain
-This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */
-
-#include "Ppmd7.h"
-
-#define PPMD7_kTopValue (1 << 24)
-
-Bool Ppmd7z_RangeDec_Init(CPpmd7z_RangeDec *p)
-{
-  unsigned i;
-  p->code = 0;
-  p->Range = 0xFFFFFFFF;
-  if (p->Stream->Read((void *)p->Stream) != 0)
-    return False;
-  for (i = 0; i < 4; i++)
-    p->code = (p->code << 8) | p->Stream->Read((void *)p->Stream);
-  return (p->code < 0xFFFFFFFF);
-}
-
-static UInt32 Range_GetThreshold(void *pp, UInt32 total)
-{
-  CPpmd7z_RangeDec *p = (CPpmd7z_RangeDec *)pp;
-  return (p->code) / (p->Range /= total);
-}
-
-static void Range_Normalize(CPpmd7z_RangeDec *p)
-{
-  if (p->Range < PPMD7_kTopValue)
-  {
-    p->code = (p->code << 8) | p->Stream->Read((void *)p->Stream);
-    p->Range <<= 8;
-    if (p->Range < PPMD7_kTopValue)
-    {
-      p->code = (p->code << 8) | p->Stream->Read((void *)p->Stream);
-      p->Range <<= 8;
-    }
-  }
-}
-
-static void Range_Decode(void *pp, UInt32 start, UInt32 size)
-{
-  CPpmd7z_RangeDec *p = (CPpmd7z_RangeDec *)pp;
-  p->code -= start * p->Range;
-  p->Range *= size;
-  Range_Normalize(p);
-}
-
-static UInt32 Range_DecodeBit(void *pp, UInt32 size0)
-{
-  CPpmd7z_RangeDec *p = (CPpmd7z_RangeDec *)pp;
-  UInt32 newBound = (p->Range >> 14) * size0;
-  UInt32 symbol;
-  if (p->code < newBound)
-  {
-    symbol = 0;
-    p->Range = newBound;
-  }
-  else
-  {
-    symbol = 1;
-    p->code -= newBound;
-    p->Range -= newBound;
-  }
-  Range_Normalize(p);
-  return symbol;
-}
-
-void Ppmd7z_RangeDec_CreateVTable(CPpmd7z_RangeDec *p)
-{
-  p->p.GetThreshold = Range_GetThreshold;
-  p->p.Decode = Range_Decode;
-  p->p.DecodeBit = Range_DecodeBit;
-}
-
-
-#define MASK(sym) ((signed char *)charMask)[sym]
-
-int Ppmd7_DecodeSymbol(CPpmd7 *p, IPpmd7_RangeDec *rc)
-{
-  size_t charMask[256 / sizeof(size_t)];
-  if (p->MinContext->NumStats != 1)
-  {
-    CPpmd_State *s = Ppmd7_GetStats(p, p->MinContext);
-    unsigned i;
-    UInt32 count, hiCnt;
-    if ((count = rc->GetThreshold(rc, p->MinContext->SummFreq)) < (hiCnt = s->freq))
-    {
-      Byte symbol;
-      rc->Decode(rc, 0, s->freq);
-      p->FoundState = s;
-      symbol = s->Symbol;
-      Ppmd7_Update1_0(p);
-      return symbol;
-    }
-    p->PrevSuccess = 0;
-    i = p->MinContext->NumStats - 1;
-    do
-    {
-      if ((hiCnt += (++s)->freq) > count)
-      {
-        Byte symbol;
-        rc->Decode(rc, hiCnt - s->freq, s->freq);
-        p->FoundState = s;
-        symbol = s->Symbol;
-        Ppmd7_Update1(p);
-        return symbol;
-      }
-    }
-    while (--i);
-    if (count >= p->MinContext->SummFreq)
-      return -2;
-    p->HiBitsFlag = p->HB2Flag[p->FoundState->Symbol];
-    rc->Decode(rc, hiCnt, p->MinContext->SummFreq - hiCnt);
-    PPMD_SetAllBitsIn256Bytes(charMask);
-    MASK(s->Symbol) = 0;
-    i = p->MinContext->NumStats - 1;
-    do { MASK((--s)->Symbol) = 0; } while (--i);
-  }
-  else
-  {
-    UInt16 *prob = Ppmd7_GetBinSumm(p);
-    if (rc->DecodeBit(rc, *prob) == 0)
-    {
-      Byte symbol;
-      *prob = (UInt16)PPMD_UPDATE_PROB_0(*prob);
-      symbol = (p->FoundState = Ppmd7Context_OneState(p->MinContext))->Symbol;
-      Ppmd7_UpdateBin(p);
-      return symbol;
-    }
-    *prob = (UInt16)PPMD_UPDATE_PROB_1(*prob);
-    p->InitEsc = PPMD7_kExpEscape[*prob >> 10];
-    PPMD_SetAllBitsIn256Bytes(charMask);
-    MASK(Ppmd7Context_OneState(p->MinContext)->Symbol) = 0;
-    p->PrevSuccess = 0;
-  }
-  for (;;)
-  {
-    CPpmd_State *ps[256], *s;
-    UInt32 freqSum, count, hiCnt;
-    CPpmd_See *see;
-    unsigned i, num, numMasked = p->MinContext->NumStats;
-    do
-    {
-      p->OrderFall++;
-      if (!p->MinContext->Suffix)
-        return -1;
-      p->MinContext = Ppmd7_GetContext(p, p->MinContext->Suffix);
-    }
-    while (p->MinContext->NumStats == numMasked);
-    hiCnt = 0;
-    s = Ppmd7_GetStats(p, p->MinContext);
-    i = 0;
-    num = p->MinContext->NumStats - numMasked;
-    do
-    {
-      int k = (int)(MASK(s->Symbol));
-      hiCnt += (s->freq & k);
-      ps[i] = s++;
-      i -= k;
-    }
-    while (i != num);
-    
-    see = Ppmd7_MakeEscFreq(p, numMasked, &freqSum);
-    freqSum += hiCnt;
-    count = rc->GetThreshold(rc, freqSum);
-    
-    if (count < hiCnt)
-    {
-      Byte symbol;
-      CPpmd_State **pps = ps;
-      for (hiCnt = 0; (hiCnt += (*pps)->freq) <= count; pps++);
-      s = *pps;
-      rc->Decode(rc, hiCnt - s->freq, s->freq);
-      Ppmd_See_Update(see);
-      p->FoundState = s;
-      symbol = s->Symbol;
-      Ppmd7_Update2(p);
-      return symbol;
-    }
-    if (count >= freqSum)
-      return -2;
-    rc->Decode(rc, hiCnt, freqSum - hiCnt);
-    see->Summ = (UInt16)(see->Summ + freqSum);
-    do { MASK(ps[--i]->Symbol) = 0; } while (i != 0);
-  }
-}
diff --git a/griffin/griffin.c b/griffin/griffin.c
index 2726dd871a..6c3c090baa 100644
--- a/griffin/griffin.c
+++ b/griffin/griffin.c
@@ -670,7 +670,6 @@ DEPENDENCIES
 #include "../deps/7zip/7zFile.c"
 #include "../deps/7zip/7zStream.c"
 #include "../deps/7zip/7zBuf2.c"
-#include "../deps/7zip/Ppmd7.c"
 #include "../deps/7zip/LzmaDec.c"
 #include "../deps/7zip/7zCrcOpt.c"
 #include "../deps/7zip/Bra.c"
@@ -679,7 +678,6 @@ DEPENDENCIES
 #include "../deps/7zip/7zCrc.c"
 #include "../deps/7zip/Lzma2Dec.c"
 #include "../deps/7zip/7zBuf.c"
-#include "../deps/7zip/Ppmd7Dec.c"
 #include "../decompress/7zip_support.c"
 #endif