you can swap it, i am not really sure about from a fat to a slim, but i would say its possible.
just dump the old NOR, desolder it, then solder the new NOR on and flash it.
or you can off-board flash if you have the correct setup.
you might have to run the rsod.lv2diag to finally fix it tho. if the data or NOR is corrupt, then when you dump it, it might be corrupt. but rsod.lv2diag should fix it.
also, what firmware is the rsod ps3 on?
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