I've been messing with the flash0 as long as I've done anything theme related, if it bricks then it bricks.
it hasn't so far. It's a psp 2000 ta088v2 mobo so it's recoverable anyways.

as for cxmb, it doesn't work as i said, i can load the plugin but no theme works :/

no need to be so harsh anyway, i do get how cxmb works, but i don't see a need to use it since copying a theme to flash0 as rco's does the same without the extra plugins or whatever that simply isn't needed to gain the desired result.