BIOS Version EV91510A.15A.0123 Upgrade?

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hi everyone! i have a gateway desktop computer with the following bios version: EV91510A.15A.0123

i am trying to find a newer version of this bios, but i simply can't find it on gateway's site. i can't contact them for help because tech support on the computer has long expired. i did some searching around and the closest topic i can find to my problem can be found here:

http://www.wimsbios.com/phpBB2/topic7591.html

the main difference between my problem and dmb's problem is that i have not yet flashed another version on top of EV91510A.15A.0123. also, i don't understand how AG91510J.15A.0816 can be the newest version of this bios, since they don't even start with the same letters. does anybody know where i can start? i've checked on intel's site as well as gateway's site, but i must not be very good at finding things, because i haven't found a newer version of this bios version. please help! if i have not given enough information, i would be more than happy to do so; simply let me know what information you need. thanks for reading this


Edit - Fixed link for the OP. KW

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Can anybody help?