Question about Sony PlayStation Portable (PSP) Console
Try to upgrade it 3.52 first and then jump to the latest 3.90. If you want to keep a CFW then check out http://www.dark-alex.org/ for more info.
Worst case you might have to 'unbrick' it with a Pandora's battery. See http://forums.qj.net/f-psp-pandora-discussion-207/t-guide-make-the-perfect-pandoras-battery-124530.html for a really good guide on how to make your own safely and the steps needed to 'unbrick' a corrupt PSP.
Posted on Feb 16, 2008
hi your previous psp version is 3.80 m33 if yes your using custom firmware that why you can play game to your memory stick the problem is you upgrade your psp firmware to sony official firmware 5.01 you reinstall your firwmware again using custom firmware like 5.00 m33-3 cfw below with m33 or OE
Posted on Nov 22, 2008
currently there is not a 5.51 to 4.00 downgrader. please check on the bottom of the silver trim on your psp there should be a bar code if the first four digits are AB02 then the psp is unhackable and you will have to use HEN to play games if the 4 digits are AB01 and below you can hack the psp via pandora
Posted on Aug 02, 2009
Posted on Jan 24, 2010
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