I've just finished building a new system based around an Asrock Z68 Extreme4 mobo. I noticed in the requests forum someone has already modded the current UEFI bios for this board. But since there will probably be several updates over the coming months - since it's a fairly new motherboard - I'd like to be able to do the modding myself. So I had a go using the Phoenix tool and left all the settings at default. It seemed to work and it verified ok and everything. However when I compare md5 sums of my mod and the one posted in the requests thread they are different. I'm pretty sure I used the same Asus slic as the other modder did. Is there any reason for this? I'm not sure if any of the settings (like the method) need to be changed. These UEFI bioses are new to me. I'm just being cautious since I'm not sure on recovery procedures with these new Asrock motherboards if the flash goes bad. Thanks, Dave EDIT: I just realized the RW report I obtained has a different md5 hash to the one the other guy posted. Would this be the reason the 2 slic'd bioses also have non-matching MD5 sums?