FIRST: exact model ?hi to all.
i want to update 4.81 ps3 without disc drive to 4.82 ofw
SECOND: are you downgrading it ?
THIRD: have you a hw flasher ?
If 2 and 3 are NO, so you can do NOTHING.
The installation on NOBD consoles is only possible on JAILBROKEN consoles.
The 1 is only to know if you can jailbreak your console.
So, answer that or just will close this thread.