Downgrade ps3 3.66 not possible unless infectus?

[lightisdark]

I'm seeing so many videos on ppl dongrading 3.70.. is this true??

I have a 3.66 Fat 60gb machine and i know the only way is infectus right?

[PS3 News]

Yep, you can use the Infectus and the updated method here:

http://www.ps3news.com/ps3-hacks-jai...stom-firmware/

http://www.ps3news.com/forums/ps3-ha...tml#post382867

Another option is to go the E3 route: http://www.ps3news.com/ps3-hacks-jai...3-55-firmware/