diff --git a/pc-bios/README b/pc-bios/README
index 4ae8a29b2d..247689bcde 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -41,8 +41,8 @@
 - OpenBIOS (http://www.openbios.org/) is a free (GPL v2) portable
   firmware implementation. The goal is to implement a 100% IEEE
   1275-1994 (referred to as Open Firmware) compliant firmware.
-  The included Sparc32, Sparc64 and PowerPC images are built from SVN
-  revision 450.
+  The included images for Sparc32, Sparc64 and PowerPC (for 32 and 64 bit
+  PPC CPUs) are built from OpenBIOS 1.0 release (SVN revision 463).
 
 - The PXE roms come from Rom-o-Matic etherboot 5.4.2.
   pcnet32:pcnet32 -- [0x1022,0x2000]
diff --git a/pc-bios/openbios-ppc b/pc-bios/openbios-ppc
index 29c482b20f..87fd91dab2 100644
Binary files a/pc-bios/openbios-ppc and b/pc-bios/openbios-ppc differ
diff --git a/pc-bios/openbios-sparc32 b/pc-bios/openbios-sparc32
index 548611bf96..7a8eda91ce 100644
Binary files a/pc-bios/openbios-sparc32 and b/pc-bios/openbios-sparc32 differ
diff --git a/pc-bios/openbios-sparc64 b/pc-bios/openbios-sparc64
index fee08e4f46..f2ec4f2d0e 100644
Binary files a/pc-bios/openbios-sparc64 and b/pc-bios/openbios-sparc64 differ