E3 flasher w/ no esata station and no fsm dongle required, E3 flasher w/ no esata station and no fsm dongle required from 4.46 ofw to rogero 4.46 v1.01 cfw works with 4.70 as well.
[tut] how to downgrade w/e3 flasher to any cfw, If you don't get multiple identical valid backups, do not continue!!! note: the newer updates for e3 flasher make 3 bios backups at once. i suggest you still repeat.
How to downgrade a ps3 to 3.55 with e3 flasher (easy, [how to] downgrade slim ps3 from 4.76 to 3.55 firmware using e3 flasher tutorial (part 2 of 4) - duration: 26:02. project phoenix media 10,676 views.