Ps3 cfw 4.60 ferrox installation, tests and description - YouTube
Sony PlayStation 3 Firmware 4.90 Download | TechSpot
Surprise! There's a new PS3 firmware update - here's what patch 4.88 does | TheSixthAxis
OLD] How to Jailbreak Your PS3 on Firmware 4.89 or Lower! - YouTube
I found a broken, untested backwards compatible PS3 model online which ended up costing me just 11€ and it ended up working! It needs a shell replacement but besides that it works without issues and is actually on 4.60 firmware. I'm speechless! : r/PS3