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The posts were a strange mix of triumph and despair. One user, “SolderKing99,” wrote: “The unlock code from carriers is a scam. The real lock is in the firmware. If you flash the generic ZTE firmware, the router forgets it was ever locked.”
“Flashed ‘unlock firmware’ from a Telegram group. Device now shows ‘Invalid SIM’ on all carriers. No recovery mode. E-waste.” Zte Mf920u Unlock Firmware
: These services typically process requests within 15 minutes to 24 hours. The posts were a strange mix of triumph and despair