i tend to step away from the ps3 scene for periods of time, but now ive noticed all these updates about 4.31 etc and im back to being lost.

is the latest cfw still 3.55 and the 4.xx stuff is just spoofs (similar to the rebug.2 that i am currently running, but updated)
are these latest things safe now, i had noticed that people were bricking their ps3s previously.