I'm not sure if it will cause a brick but I think it would be better if you uninstall it first.
Originally Posted by Liloolil
Okay, thanks. I'll do that. Then I pray that my PS3 will not be bricked :-P
Originally Posted by mschumacher69
I just want to say that I have successfully updated to REBUG 4.30.2 REX. I changed back to original button layout, then I updated without bricking the PS3. Thanks :-)