diff --git a/Doc/ChangeLog.txt b/Doc/ChangeLog.txt
index f0278b38..222ebdbe 100644
--- a/Doc/ChangeLog.txt
+++ b/Doc/ChangeLog.txt
@@ -1,3 +1,8 @@
+Version 2.8.1
+-------------
+- WBW: Fix FDISK80
+- WBW: Upgrade to latest production UNA 2.1-45
+
 Version 2.8.0
 -------------
 - WBW: Add support for VGA3 board
diff --git a/Source/CBIOS/ver.inc b/Source/CBIOS/ver.inc
index cff47a65..a6022790 100644
--- a/Source/CBIOS/ver.inc
+++ b/Source/CBIOS/ver.inc
@@ -1,5 +1,5 @@
 #DEFINE	RMJ	2
 #DEFINE	RMN	8
-#DEFINE	RUP	0
+#DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.8.0"
+#DEFINE BIOSVER	"2.8.1"
diff --git a/Source/HBIOS/ver.inc b/Source/HBIOS/ver.inc
index cff47a65..a6022790 100644
--- a/Source/HBIOS/ver.inc
+++ b/Source/HBIOS/ver.inc
@@ -1,5 +1,5 @@
 #DEFINE	RMJ	2
 #DEFINE	RMN	8
-#DEFINE	RUP	0
+#DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.8.0"
+#DEFINE BIOSVER	"2.8.1"
diff --git a/Source/RomDsk/ROM_1024KB/FDISK80.COM b/Source/RomDsk/ROM_1024KB/FDISK80.COM
index ace4b0a6..00ac10f7 100644
Binary files a/Source/RomDsk/ROM_1024KB/FDISK80.COM and b/Source/RomDsk/ROM_1024KB/FDISK80.COM differ
diff --git a/Source/RomDsk/ROM_512KB/FDISK80.COM b/Source/RomDsk/ROM_512KB/FDISK80.COM
index ace4b0a6..00ac10f7 100644
Binary files a/Source/RomDsk/ROM_512KB/FDISK80.COM and b/Source/RomDsk/ROM_512KB/FDISK80.COM differ
diff --git a/Source/UBIOS/FSFAT.BIN b/Source/UBIOS/FSFAT.BIN
index 06aebd5f..f7915f05 100644
Binary files a/Source/UBIOS/FSFAT.BIN and b/Source/UBIOS/FSFAT.BIN differ
diff --git a/Source/UBIOS/UNA-BIOS.BIN b/Source/UBIOS/UNA-BIOS.BIN
index 06cf8059..84d30907 100644
Binary files a/Source/UBIOS/UNA-BIOS.BIN and b/Source/UBIOS/UNA-BIOS.BIN differ