How To Hack PSP 5.50 Prometheus To 6.60 PRO-C - YouTube
How To] Install CXMB (Custom Themes) on 5.50 GEN-A,B,C,D (PSP) - YouTube
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
Why can't i update( my psp version is 5.50 prome-2) : r/PSP
PSP firmware 5.50 arrives to fulfill your every subfolder exploration need | Engadget
Found my old PSP running 5.50 prone. How can I safely upgrade to latest CFW and then install other emulators? : r/psphacks
CFW 5.50GEN-D | PSP NEXT
Original PSP 2006 PAL region custom firmware 5.50 D3. | Sony PSP & Vita | Mississauga / Peel Region | Kijiji
Update PSP Custom Firmware 5.50GEN D to CFW 5.50GEN D2 - YouTube
Just found my PSP. It has version 5.50 Gen-B. Don't remember when I updated it last. What is the last version and is there any reasons for me to update? Are there