I finally did it! Original coldboot/Gameboot from 2006 on my CFW! : r/PS3
New PS3 ColdBoot - Anonymous | HepticOnline - YouTube
Original Coldboot, Gameboot & Startup sound (Pre-release Version Found in Firmware 0.90). Tbh this is better than the current version. | By Malaysia PS3 Jailbreakers | Facebook
How To Make Your Own Custom ColdBoot With Boot Sound For HFW PS3 2020 - YouTube
PS3 Coldboot for Anime only (Features / request for coldboot) | PSXHAX - PSXHACKS
PS3 - (TuT) Make your own coldboot logo and sounds | PSX-Place