J320FN Trouble Unlocking Sim - Missing Perso SHA256

ThreeM333

New member
Sep 10, 2020
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Hey folks,

I'm trying to unlock my J320FN, I've got a stock ROM installed but there's no option for PersoSHA Off (or On) in the service menu. It just has "6" there.

I've seen on other threads that I need to downgrade my modem.
I'm not sure exactly how to do that, I have Odin v3.10 and I'm not sure what files are the modem files in a ROM. I've struggled non-passworded/virus copies of just the modem files so I'm not sure what they're titled.
With Odin, I don't what to select to flash them (I can flash full ROMs easy enough but never had to do this), as in BL, AP etc and what files.

Would anyone be able to help? Thanks :)