I was surprised to see a new firmware announcement for the 5D2, I figured it was set in stone until the MKIII comes out, whenever that is. Anyway, one of the fixes is the IS button bug, if anyone is affected by that, plus it'll support the forthcoming UDMA Level 7 CF cards. Canon's statement:
Firmware Version 2.0.9 incorporates the following improvements and fixes:
1. Improves writing/reading speeds when using UDMA 7-compatible CF cards.
2. Fixes a phenomenon where the IS function will not work when custom function C.Fn III-2 is set to [5:IS start] and the lens attached does not have an AF stop button. This is because custom function C.Fn III-2 allows users to assign IS start to the AF stop button on the lens.
3. Corrects misspellings in the menu screens displayed in Arabic, Portuguese, Spanish and Thai languages.
Discussion
1 repliesYou can download the new firmware here.
I'll be installing it in a few minutes and will pipe back if my camera melts.
Bill Brennan