What's required for the 4.11 Downgrade

[core2kid]

So what exactly is required for the 4.11 downgrade aside from the E3 flasher? I sell a lot of repaired consoles and I might be able to maximize profit by selling all of them on 3.55.
Playstation 3 - Modchip Central Ltd

I also read that only NOR consoles can be downgraded yet I see services for CECHAxx/CECHExx console downgrades. Is that possible yet or is it all a scam?

Thanks!

[badboyz80]

there is e3 flasher and progskeet u can use progskeet on the NOR consoles. you will also need either ane3 card reader or other means of getting the ps3 into factory service mode there is a way of using a psp but i believe compatibility is limited

[indirect76]

Also, the console needs to have been shipped with at most 3.55 installed, otherwise downgrading is not possible.

[core2kid]

Also, the console needs to have been shipped with at most 3.55 installed, otherwise downgrading is not possible.

I know that the console needs to have been shipped with 3.55 but most older fat consoles were so that's not a problem.
Would these two work? The first one is the actual NOR downgrader and the second is only required to get the PS3 in and out of service mode right?
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[mushy408]

You need 2 things core2kid...

Progskeet programmer, and I would suggest the E3 card reader as well to get the console into FSM. Use this combo myself for downgrading, never had problems.