Usually that's not possible, because the specific drive board is "married" to the mother board.
In this news it is however mentioned that there is a possibility to change the keys:
Furthermore, the systems can be re-flashed to any software version as well. The system's keys can also be "rearranged", such as the marrying of the PS3's BD-ROM Drive (or controller) with the mainboard.
It would be interesting to see some development with the service mode. I would think that all those Jig elumators popping up have a lot more potential than just being a tool for downgrading.
I've never had to try I've always had the right board but apparantly just for the purpose of a sucessful upgrade / downgrade.
You can use another consoles board of the same type, basically the upgrade goes round a track if the bluray logic boards missing its like a bit of the track missing so the train stops so to speak but a replacement board of same type will bridge the gap and upgrade / downgrade will complete. I hope you unsterstood my mad explanation
what I've just told the lad about using another logic board came from one of the top lads on here with 40+ rep, so I trust it to be true, I personally haven't tried it, I've never had to.
Last edited by cackalack; 12-09-2010 at 05:02 PMReason: Automerged Doublepost