Installing 5.50gen-D Onto Your Psp : 5 Steps - Instructables
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5.50 Prone-2 (Please Help!) : r/PSP
How To] Install CXMB (Custom Themes) on 5.50 GEN-A,B,C,D (PSP) - YouTube
How to Downgrade PSP from 6.30 to 5.50 « PSP :: WonderHowTo
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
Update PSP Custom Firmware 5.50GEN D to CFW 5.50GEN D2 - YouTube
Wireless PSP Custom Firmware installation is now possible! - Wololo.net
PSP] Custom Firmware 5.50 Prometheus v2 - Plays 6.20 Games | Digiex
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Upgrading from old firmware, am confused about 5.50 prome-3 and 5.50 Gen in guides : r/psphacks
Download PSP 5.50 Firmware Update
Install PSP Custom Firmware 5.50 GEN-D
Found my old PSP. Would it be worth it upgrading to a newer CFW? It currently has a few emulators with a ton of roms running perfectly fine. Anything I'm missing out