Non c'e' bisogno che vi dica di restare dove siete!Notes:
You still need to be on CFW v3.55 or OFW v3.55 to install this new CFW v4.30 from the E3 Team.
It is best if downgrading to follow the normal steps and dehashing like with Rogero just to be sure of no bricks.
E3 will be releasing an upgraded E3 Flasher 'update.bin' (firmware) to handle direct downgrading to CFW v4.30. (Beware: Their hardware required, just one of many strings disclosed)
From their page (now removed as they claim they weren't ready yet ): 2012-10-26
E3TEAM released the latest E3 CFW4.30 free, it's improved the brick problem. We will release the new game manager if none brick matter happen. Just download here (dead link now) and enjoy. (PASS is E3)
Here we mention E3 flasher user that you needn't solder wire with latest upgrade.bin file to unbrick console.