PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | GBAtemp.net - The Independent Video Game Community
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PSP FW 6.61 PRO-C2 - Hackinformer Forum
psp go 6.61 pro-c ∞ mifar.com
PSP Custom Firmware Guide For All Models 2023 - pspunk