I have not done this with a different version MB, but theoretically it should work. if both boards use the award flash program, it will work. The only environment you are dealing with in a hot flash is a bios chip, DOS, floppy disk and award flash. The one thing you will have to be careful of in the rev 2.0 is after the flash is complete, shut down the computer completely before it reboots, so that way the computer does not update the bios profile onto itself. Just remove it and place the good bios chip back on the rev 2.0 and you are good to go. I did a hot flash with same mother board. The one thing I must caution to you is the size of Bios chip. I am not sure if there is an issue between bios size, for example a 2 MB vs 4 MB Bios chip. The rev 2.0 uses a 4 MB chip. If this is an issue, I think there is a flash program called uniflash that will allow you to flash with different bios/chipset platforms. I wouldn't worry about this. I think you will be alright with what you have. If it does not work, no problem, you will back to square one with dead bios chip. Your rev 2.0 should be fine.