diff --git a/pc-bios/README b/pc-bios/README
index 4ae8a29b2df7468971ceb3f14e5cf344d8f04174..247689bcdefe88f2e898f755ea8f2f1a81cd16d2 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 29c482b20fb206a1ebbdf61d0dd4c052882f4e89..87fd91dab25f5a9937e0fe92c40fb0ac34614396 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 548611bf9627cfabd0d33dbd05b2152186a1199f..7a8eda91ce1761a9ae150210eae60c30a057b130 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 fee08e4f46c37c6118fa770aab2b4286eca90eff..f2ec4f2d0e0da20482f12376523c7b42588e1c5e 100644
Binary files a/pc-bios/openbios-sparc64 and b/pc-bios/openbios-sparc64 differ