Hi ! I really hope someone of you can help me. Well, there is a lot of topics about error 80020148, BUT I have done everything said in these kind of forums, but some games still is not working.

I have PSP Slim 2004 (European), 5.50 GEN-B (full) custom firmware and motherboard model TA-088 v1 /v2 .

I have done everything in recovery mode - I try m33driver no-umd , try Sony NP9660 no-umd , disable all plugins in advanced settings . I did format memory stick , set default settings on my psp , but nothing repairs .
I have read about some cfw updates or upgrades to fix this problem , BUT I have motherboard model TA-088 v1 /v2 . I red about brick psp while upgrade cfw 5.50 GEN-B (full) with motherboard model TA-088 v3 . I can do it with motherboard model TA-088 v1 /v2 ?? And wich exactly cfw i need in this situation ?
Waiting for answers and thanks previously.

(at this moment games wich is not working for me is MLB 2K11, NBA 2K11 , Dirt 2 )