I have 0 problems with 5.50 Gen-D3 until now. I want to run iRShell 5 which doesn't support 5.50 Gen-D3. I want to get back to 5.00 M33. I've seen howtos on doing it with Gen A, B, and C but no D. Anyone have a walkthrough.
If you go to PSPGEN.COM they have a new irshell patch by Yoshihiro that works perfectly on 5.50 GEN D-3, I can tell you everything is working Great. But if you still want to go back, install DC8 on your PSP and transform your battery to a pandora and revert back to 5.00 m33.