maybe the files on the memory stick are wrong.
I know about a GUI to install the files If you have a card reader or another psp to put the files in
It installs 3.71M33-2, but from there you can go to whatever firmware you want so http://www.mediafire.com/?2nlcnnmxx45
edit: damn, the link is no longer working
I found this one wich installs 3.80M33-5 just need to create a user acount, but the webpage is in spanish http://beta.pesepe.com/system/files/...rioPCv4GUI.exe
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