| Error Message | Likely Cause | Solution | |---|---|---| | “Invalid Code” after 1 try | Typo, or code is for wrong carrier | Double-check IMEI and carrier. Request a new code. | | “Max attempts reached” | Wrong codes entered 5-10 times | Router is now “hard-locked.” Requires professional JTAG or DC-Unlocker software. | | Code accepted but no signal | APN missing or frequency mismatch | Configure APN manually. Check if new carrier supports LTE Bands 1/3/7/20 or 5G n78. | | “Unlock menu missing” | Router firmware hides menu | Factory reset: Press reset pin hole for 10 seconds. Then try again with foreign SIM. |
If not, manually go to http://192.168.0.1 or http://192.168.1.1 (check sticker). Login. Navigate to . zte mc801a unlock code
You enter the code, and the router says Now what? | Error Message | Likely Cause | Solution