G925f Modem File U6 [repack] < PC >
The modem file works closely with the (stores IMEI, WiFi MAC, Bluetooth address). A bad modem flash can corrupt EFS, leading to permanent "Null IMEI."
If your SIM works in other phones but not in the G925F, and you've ruled out hardware damage, the modem partition is the next suspect. The U6 file is often the solution for devices stuck on Android 7.0 Nougat bootloader U6. g925f modem file u6
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