So whats the answer here then..
Luci Ferson is saying that anything currently running OFW over 3.55 can only be downgraded using hardware. But are you saying provided the PS3 is 'compatible' with the 3.55 OFW, it can be downgraded to it even if its running a newer OFW 'WITHOUT' hardware downgrading.
I have found this list of lowest compatible firmwares.. http://www.ps4news.com/forums/ps3-gu...hk-120995.html
But like I say, I'm now curious if it needs hardware flashing or there is some software / usb flash drive way of doing the downgrading - which doesn't need loads of soldering doing etc.