Just tested a few homebrews. Not heavily tested, just made sure they load and all the buttons work.
Powder: Working. It's some sort of 2D adventure game.
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https://mega.co.nz/#!ARxk1JbS!o9R6Fcg3m ... u9vizlox18 <<
Numpty Physics: Working. Strange game, feels kinda slow. Doesn't properly exit back to VHBL.
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https://mega.co.nz/#!hdo1TbgD!G_AjJ6aJK ... XdkWum38_w <<
AntiTetris: Not working. Sends to black screen.
How Fast Are You: Not working. Sends to black screen.
Ultra: Working. Short black screen on boot, clears up and loads game shortly after. Not entirely sure how to play.
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https://mega.co.nz/#!UFJ1zaRa!7gBwRnqdN ... XoRuojKiUo <<
PSPQuake: Working. Quake on the PSP, pretty self explanatory.
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https://mega.co.nz/#!0BRQjLCI!woI-CVKRY ... M4lJTvk4MI <<