Actually i edit these file nas_plugin.rco, netconf_plugin.rco, np_multisignin_plugin.rco, npsignin_plugin.rco, software_update_plugin.rco, sysconf_plugin.rco, system_plugin.rco. to disable software update in system update menu, and remove some icons not use in PSN XMB.
After replace these file i saw in debug settings almost setting had messed if i chose one the ps3 will freeze. I saw there is file vsh.self.swp,vsh.self.dexsp in dev_flash. i think these file is temp file so i delete them.
Hehehe my frind ^^ you cant easely just delate files but this now you've learned by your owen
Be carefull till you know what your doing. Do as i have told you reinstall OFW via Rescue Menu and by the way buy a hardware flasher or do your owen one like teensy2+ NORway and similar then you can do such task's and flash back your previous made backup if something goes wrong.
This is true. I never learned that IT stuff in scool or something else but i never have bricked one single con with my mod's and hack's i worked on. Just think twice and analyse till you understand what your doing. Sure there is always a risk to brick your con. I've sweating blood some times i have tested some new thing's but it always went fine.
Why should this not be change able ? If played much around on the first days of cfw (remeber on ACID?) and RCO's are often (up to never) not fw binded. You can mix them up with no probs.
Also most of the other fw files like sprx's and a few self's can be changed/swapped without bricking the con as long you use files of the same fw version. It depends on a few things like which use it has.