If it works (don't know it):
You have to downgrade your ps3 nor to 3.55checkless, then dehash to get ofw3.55, then Re-dehash to go to 4.21cfw.
After that you can copy your ps3's nor to e3-nor.
Thats the way i would do/try that.
You can take another hdd to downgrade to use ur saves After updating back to 4.30..
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