diff --git a/pc-bios/README b/pc-bios/README
index be8dae0aa9..b4138d16d8 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -17,7 +17,7 @@
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at
   https://github.com/aik/SLOF, and the image currently in qemu is
-  built from git tag qemu-slof-20130430.
+  built from git tag qemu-slof-20130827.
 
 - sgabios (the Serial Graphics Adapter option ROM) provides a means for
   legacy x86 software to communicate with an attached serial console as
diff --git a/pc-bios/slof.bin b/pc-bios/slof.bin
index 092e58a46e..0e8b51ad1f 100644
Binary files a/pc-bios/slof.bin and b/pc-bios/slof.bin differ
diff --git a/roms/SLOF b/roms/SLOF
index 8cfdfc43f4..a523d1b0cd 160000
--- a/roms/SLOF
+++ b/roms/SLOF
@@ -1 +1 @@
-Subproject commit 8cfdfc43f4c4c8c8dfa4b7cf16f7c19c84eee812
+Subproject commit a523d1b0cd6e96cf5e393f0a10f897e8ed639fdc