So I downloaded the 6.61 update and when I try to install it it displays this error and I don't have a custom firmware so If anyone know how to solve this
PSP Custom Firmware 6.00-6.61
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
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PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
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4 Ways to Upgrade Your PSP Firmware - wikiHow
4 Ways to Upgrade Your PSP Firmware - wikiHow
PlayStation Guide
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
Davee's Infinity CFW - Permanent 6.61 CFW on All 3000 & Go Models! | GBAtemp.net - The Independent Video Game Community
Complete Guide to PSP Custom Firmware | ReviveToday
How To Update Any PSP To Official 6.61 In 2018! - YouTube
PSP Custom Firmware 6.00-6.61
PSP Custom Firmware 6.00-6.61
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
PSP 6.61 Infinity Permanent CFW (LME & PRO) 2018 Tutorial! - YouTube
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How to Download PSP Games and Transfer them to Your PSP
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PSP 6.61 PRO-C2 Permanent Custom Firmware - YouTube
Custom Firmware with PRO | ReviveToday
