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
PSP Custom Firmware 6.00-6.61
Install PSP Custom Firmware 5.50 GEN-D
How to Update a locked 5.50 GEN D2 CFW PSP To 6.60 Pro-C Custom Firmware | Easy Method 2022 - YouTube
PSP Custom Firmware 5.50 GEN-D3 - Exophase.com
PSP] Custom Firmware 5.50 Prometheus v2 - Plays 6.20 Games | Digiex
Upgrading from old firmware, am confused about 5.50 prome-3 and 5.50 Gen in guides : r/psphacks
PSP] Custom Firmware 5.50 Prometheus v2 - Plays 6.20 Games | Digiex