Even on the official upgrade there's a chance of bricking. Well I dont know what firmware you use now. If it is custom firmware 2.71 SE, check if you put it to the right folder. I put it in GAME150 folder and make sure you put it all the files in this folder.I am currently using DGEN in my 3.52 M33-4 CFW and all the games i run here works fine, and not afraid if my psp will brick. There's now the Pandora's Battery, so you should not be worry in bricking.
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