first off you need a psp with cfw already on it to make the mms so if you dont have one find someone via caigslit if you do have a psp with cfw then try to follow the diretions to the t to make the mms or it wont work
I understand what you are saying, I tried do install CFW in it, when I click on update I always come with the same error message the game could not be started, and I'd like to know How can I fix that problem
The firmware on my PSP is version 4.05
Actually your real answer is, maybe. 2004 is a psp slim/lite. You are able to make the magic memory card without having to use a custom firmwarepsp, the psp is mostly used as a memory card writer, however, some installations have you do some install junk on your psp as well, so just find one that does not do that. You should check if your psp can be hacked at all. Psps that came with official firmware 4.01 or higher are most likely not. 1000=fat 2000=slim 3000=bright 4000=me