PS3 Minimum Ver Checker | How to check PS3 CFW compatibility - 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
Best option to hack a 60gb phat on 4.83 ofw? | GBAtemp.net - The Independent Video Game Community
PS3 Jailbreak Compatibility List - Find Perfect Jailbreak/Exploit