True, I guess that's possible, didn't think of that. I'd suck as a technical adviser for Sonythedicemaster said:sifjar: there is still a way for them to block homebrew, although it's tedious work.
they just have to make a whitelist of all currently existing legit ps3 software, and block anything signed with the old(current) key that isn't on this whitelist.
not that it would help them much for the ps3's that are already at people's homes, because for those some hacker would just make a firmware update without the whitelist.
Anyhow, considering fail0verflow can sign pretty much anything, they'd be able to sign a firmware update without that and problem solved