diff --git a/src/ps4_libsceappcontent.pas b/src/ps4_libsceappcontent.pas
index c3985a06..31b06f7f 100644
--- a/src/ps4_libsceappcontent.pas
+++ b/src/ps4_libsceappcontent.pas
@@ -11,6 +11,9 @@ uses
 
 implementation
 
+uses
+ sys_path;
+
 type
  PSceAppContentInitParam=^SceAppContentInitParam;
  SceAppContentInitParam=packed record
@@ -107,10 +110,19 @@ type
  pSceAppContentMountPoint=^SceAppContentMountPoint;
  SceAppContentMountPoint=array[0..SCE_APP_CONTENT_MOUNTPOINT_DATA_MAXSIZE-1] of AnsiChar;
 
+function ps4_sceAppContentTemporaryDataFormat(mountPoint:pSceAppContentMountPoint):Integer; SysV_ABI_CDecl;
+begin
+ Result:=FormatTmpPath(PChar(mountPoint));
+end;
+
+function ps4_sceAppContentTemporaryDataMount(mountPoint:pSceAppContentMountPoint):Integer; SysV_ABI_CDecl;
+begin
+ Result:=FetchTmpMount(PChar(mountPoint),SCE_APP_CONTENT_TEMPORARY_DATA_OPTION_FORMAT);
+end;
+
 function ps4_sceAppContentTemporaryDataMount2(option:DWORD;mountPoint:pSceAppContentMountPoint):Integer; SysV_ABI_CDecl;
 begin
- Result:=0;
- Assert(false,'TODO');
+ Result:=FetchTmpMount(PChar(mountPoint),option);
 end;
 
 function Load_libSceAppContent(Const name:RawByteString):TElf_node;
@@ -125,6 +137,8 @@ begin
  lib^.set_proc($47D940F363AB68DB,@ps4_sceAppContentInitialize);
  lib^.set_proc($F7D6FCD88297A47E,@ps4_sceAppContentAppParamGetInt);
  lib^.set_proc($C6777C049CC0C669,@ps4_sceAppContentGetAddcontInfoList);
+ lib^.set_proc($6B937B9401B4CB64,@ps4_sceAppContentTemporaryDataFormat);
+ lib^.set_proc($EDB38B5FAE88CFF5,@ps4_sceAppContentTemporaryDataMount);
  lib^.set_proc($6EE61B78B3865A60,@ps4_sceAppContentTemporaryDataMount2);
 end;
 
diff --git a/sys/sys_path.pas b/sys/sys_path.pas
index 09f7cbab..b026c45a 100644
--- a/sys/sys_path.pas
+++ b/sys/sys_path.pas
@@ -23,6 +23,8 @@ Function  FetchSaveMount(path,point:PChar;mode:Integer):Integer;
 Function  UnMountSavePath(path:PChar):Integer;
 
 Function  FetchTmpMount(point:PChar;mode:Integer):Integer;
+Function  UnMountTmpPath(point:PChar):Integer;
+Function  FormatTmpPath(point:PChar):Integer;
 
 function  parse_filename(filename:PChar;var r:RawByteString):Integer;
 
@@ -288,9 +290,10 @@ end;
 //
 
 const
- SCE_APP_CONTENT_ERROR_PARAMETER=-2133262334; //0x80D90002;
- SCE_APP_CONTENT_ERROR_BUSY     =-2133262333; //0x80D90003;
- SCE_APP_CONTENT_ERROR_INTERNAL =-2133262326; //0x80D9000A;
+ SCE_APP_CONTENT_ERROR_PARAMETER  =-2133262334; //0x80D90002
+ SCE_APP_CONTENT_ERROR_BUSY       =-2133262333; //0x80D90003
+ SCE_APP_CONTENT_ERROR_NOT_MOUNTED=-2133262332; //0x80D90004
+ SCE_APP_CONTENT_ERROR_INTERNAL   =-2133262326; //0x80D9000A
 
  M_TMP_VALUE:PChar='tmp';
 
@@ -300,22 +303,60 @@ var
 begin
  if (point=nil) then Exit(SCE_APP_CONTENT_ERROR_PARAMETER);
 
- if XCHG(FTmpMount,1)<>0 then Exit(SCE_APP_CONTENT_ERROR_BUSY);
-
- Move(M_TMP_VALUE,point^,Length(M_TMP_VALUE)+1);
-
  Case mode of
   0:;
-  1:begin //format
-     S:=IncludeTrailingPathDelimiter(GetCurrentDir)+M_TMP_VALUE;
-     DeleteDirectory(S,False);
-    end;
+  1:;
   else
    Exit(SCE_APP_CONTENT_ERROR_PARAMETER);
  end;
 
+ if not CAS(FTmpMount,0,1) then Exit(SCE_APP_CONTENT_ERROR_BUSY);
+
+ PDWORD(point)^:=$00706D74; //tmp
+
+ S:=IncludeTrailingPathDelimiter(GetCurrentDir)+M_TMP_VALUE;
+
+ if (mode=1) then //format
+ begin
+  DeleteDirectory(S,False);
+ end;
+
  CreateDir(S);
 
+ XCHG(FTmpMount,2);
+ Result:=0;
+end;
+
+Function UnMountTmpPath(point:PChar):Integer;
+begin
+ if (point=nil) then Exit(SCE_APP_CONTENT_ERROR_PARAMETER);
+
+ if (PDWORD(point)^<>$00706D74) then //tmp
+ begin
+  Exit(SCE_APP_CONTENT_ERROR_NOT_MOUNTED);
+ end;
+
+ if not CAS(FTmpMount,2,0) then Exit(SCE_APP_CONTENT_ERROR_NOT_MOUNTED);
+
+ Result:=0;
+end;
+
+Function FormatTmpPath(point:PChar):Integer;
+var
+ S:RawByteString;
+begin
+ if (point=nil) then Exit(SCE_APP_CONTENT_ERROR_PARAMETER);
+
+ if (PDWORD(point)^<>$00706D74) then //tmp
+ begin
+  Exit(SCE_APP_CONTENT_ERROR_NOT_MOUNTED);
+ end;
+
+ if (FTmpMount<>2) then Exit(SCE_APP_CONTENT_ERROR_NOT_MOUNTED);
+
+ S:=IncludeTrailingPathDelimiter(GetCurrentDir)+M_TMP_VALUE;
+ DeleteDirectory(S,False);
+
  Result:=0;
 end;
 
@@ -323,7 +364,7 @@ function MountTmpConcat(const filename:RawByteString;var r:RawByteString):Intege
 var
  S:RawByteString;
 begin
- if (FTmpMount=0) then Exit(PT_ERR);
+ if (FTmpMount<>2) then Exit(PT_ERR);
 
  S:=IncludeTrailingPathDelimiter(GetCurrentDir)+M_TMP_VALUE;