- Following up on the initial PS3 Slim 3.70 Downgrade
and PS3 3.7x Downgrade for Slims and Fats with NOR Flash
news, this weekend Italian PlayStation 3 hackers DiGiTaLAnGeL
(linked above) have made available a guide to fast swap PS3 Slim CFW 3.55 to OFW 3.70 with 2 HDDs and ProgSkeet
followed by a New Method - PS3 Downgrade v2 Supports all NOR Flash
To quote, roughly translated: Today I'll write a tutorial to "fast-swap" between CFW 3.55 and OFW 3.70, using 2 HDDs... at the end of the tutorial, you'll be able to swap between the firmware just flashing a dump on your PS3 using Progskeet. (instead of downgrading and losing all data).
The first steps are not so easy, so take your time and go on, by the way, you must have some skill with Progskeet, and it must be 100% working...