I can't fully downgrade from NF4 to ND4 - Did full wipe then flashed XEO ROM by Odin, but modem doesn't working, therefore can't register to network.
Even IMEI is "null" and CSC is unknown (Kies said it is XXX). Anyone had this?
But flashed back to NF4 BTU and everything is OK, but CSC is BTU now.