A: Rarely. SIM lock is stored in NV item 1010 (EFS). Firmware update alone won’t change that unless the firmware package explicitly includes an NV reset.
A: Many OEMs block downgrades via anti-rollback (ARB) fuses. Check AT+QNV="NV_ANTI_ROLLBACK_STATUS_I" first.
A: No, that’s EDL mode. It’s recoverable using QFIL and the correct firehose loader.
A: Rarely. SIM lock is stored in NV item 1010 (EFS). Firmware update alone won’t change that unless the firmware package explicitly includes an NV reset.
A: Many OEMs block downgrades via anti-rollback (ARB) fuses. Check AT+QNV="NV_ANTI_ROLLBACK_STATUS_I" first.
A: No, that’s EDL mode. It’s recoverable using QFIL and the correct firehose loader.
