diff --git a/pc-bios/README b/pc-bios/README
index 7c872bcb4d..ec5e2e1c8c 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -15,7 +15,7 @@
   firmware implementation. The goal is to implement a 100% IEEE
   1275-1994 (referred to as Open Firmware) compliant firmware.
   The included image for PowerPC (for 32 and 64 bit PPC CPUs), Sparc32
-  and Sparc64 are built from OpenBIOS SVN revision 821.
+  and Sparc64 are built from OpenBIOS SVN revision 859.
 
 - The PXE roms come from Rom-o-Matic gPXE 0.9.9 with BANNER_TIMEOUT=0
 
diff --git a/pc-bios/openbios-sparc32 b/pc-bios/openbios-sparc32
index 2eee1a6608..aaff1f00c9 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 1270ef614c..a1b692e7e5 100644
Binary files a/pc-bios/openbios-sparc64 and b/pc-bios/openbios-sparc64 differ