Ok, we bought my grandpa one of those christmas xbox bundles that comes with top spin and ncaa. Well, now i just bought a x2.6 modchip for him and i'm going to install it for him, i have no problem with installing it, that is easy. but i'm worried about the bios.

From what i have read i have to download the M8+ bios, whats the difference from this bios and the old M8 bios?

Why do i have to make a 1meg bios image using X2 bios editor and put the flashbios in banks 1&2 and M8+ in banks 3&4? Ive read because the M8(+?) bios only works in the last banks. is this still true?

Also, i have not opened up his xbox (he lives 3 hours away, i'm going to do it when i go visit them for christmas) so i dont know if it is a 1.6 or 1.6b. And i ordered the chip from system-mod and i dont know what flashbios version it comes with. Is it true that the 3.03 flashbios only works with 1.0-1.5 and 1.6b still?

If that it is true, then could i put the 2.6 in my 1.1 xbox, and flash the first 2 banks with 3.01 and the last two banks with 3.03 just so that i can load up the proper bios according to which version 1.6 xbox he has?

Sorry for all the questions but i couldnt find all my answers with the search button, thanks for the help anyone gives.

bump

The M8+ has the updated ram timing tables that allow it to work with a 1.6b, as well as Live blocking, so given that it's a new xbox you probably want that instead of the M8. You still need to boot from bank 2 on the 2.6 with the M8+. It'd just be easiest if you put the M8+ on the chip (either via swap or using a programmer) before you go out there, because being new you know it's at least a 1.6 and the M8+ works with both 1.6 and 1.6b. Then you just have to worry about lpc rebuild and installation.

Finally, the 2.6 has only 1 meg total bios space, so you're going to want to put M8+ on both 512K banks. Boot off of the second one.

Make sense?