How to downgrade a ps3
Nor model

In my opinion this is the best way to do it,
Yes there are different methods,
No this way isn't the fastest,
Yes it is the safest with minimal risk of brick.

Make sure you do as much research as possible before attempting this process, what I tell you is enough to get you through but some ps3s just like being a pain in the ass and problem solving requires information.

Here is everything you need:
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