The PS4 DualShock 4 GamePad Is Now Bluetooth Compatible with the PS3 | Time
Cobra ODE Complete Version Optical Drive Emulator Support 4.60 OFW For PS3 Phat and PS3 Slim--PS4/PS3/PS Mod Tools | Westingames.com
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
PS3 Flash Tool 4.60 (unofficial, by Littlebalup)
PS3 Jailbreak 4.65/4.60 CFW (How To Jailbreak PS3 with OFW) - video Dailymotion
Sony PlayStation 3 Firmware 4.60 Is Live – Download Links Available
PS3 Dual Boot Firmware 4.60 - YouTube
How to jailbreak Ps3 4.60 OFW (the truth) - YouTube