RAZR gba emulator help

[cutyouwitharazr]

Well to start off i am new to this forum, but not new to droids as it may seem due to the fact emulators should be relatively simple. on every other android phone ive had i have installed gba emulators with ease. (legally) on this new Motorola Razr i have n64 running perfectly, but with tiger gba, gameboid, and even droidemu im having great difficulty. ive downloaded multiple gba bios' and put them in the right spot, but no matter what in any emulator any rom i click on it seems to open to a black screen and dumps me back at the "choose your rom screen" respectively extremely frustrating i appreciate any advice