How do I uninstall 5.50 GEN-D3 from this silver PSP-1001? I am giving these as Christmas presents and want them all on 6.60 PRO-C2. : r/PSP
How To] Install 5.50 GEN-D3 on Your PSP - YouTube
My PSP has the firmware 5.50 GEN-D3 but I can't upgrade or downgrade it : r/ PSP
Trying to upgrade from 5.50 GEN-D3 CFW to 6.60 OFW. "The system software of your PSP system is version 9.90. There is No need to update." What can i do to fiks
PSP Custom Firmware Guide For All Models 2022 - pspunk
Install PSP Custom Firmware 5.50 GEN-D3
How To] Install 5.50 GEN-D3 on Your PSP - YouTube
CFW 5.50 GEN-D3 Recovery Flasher add-on for PSP - video Dailymotion