Need help with an old AES bios mod

Hey! SO after many years I decided to dig up my AES from storage. I bought this system in the early 2000's (from a dude who hung out at my local TILT!) and I remember it having a region bios mod. This was probably 2002. Here's the thing...I can't remember for the life of me how to access the switches. I seem to recall it having something to do with the 2nd controller and holding down a specific button combo! Any help appreciated! Thanks!

Post some pics...

Buy a Unibios and you won't have to worry about hittin' switches.

It's probably the old debug bios.

GohanX said:

It's probably the old debug bios.

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We have a winner!! Thank you sir!!

Ain't no thang.