I have a Fat PS3 CECHC02 on OFM version 4.31 so no mod yet but to install 4.81 FERROX CEX v1.00 do I have to update to OFW 4.81 first or is it good to go while on 4.31? Once its on CFW I will remarry the bluray drive so I need the CFW to be CEX as the tutorial I'm using says to use CEX. Thanks all.
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