You may need to run an AT command via Telnet: AT^SIMLOCK="unlock code" (obtain a generic NCK from your router’s old backup).
Some carriers (especially T-Mobile Europe, Vodafone) push that re-lock the router or restore restricted firmware. b535-932 unlock firmware
Legal note: In most countries (US, EU, UK, AU), unlocking a router you own is legal. However, modifying IMEI or circumventing a carrier’s data cap may violate terms of service. You may need to run an AT command
Open a web browser and go to 192.168.8.1 (the default login page). Log in with your admin password. However, modifying IMEI or circumventing a carrier’s data
The router's web interface (usually under ). Step 2: Get an Unlock Code
| | Risks | |--------------|------------| | Use any SIM worldwide | Warranty void (if still active) | | Access advanced LTE bands | Brick risk (if wrong firmware version) | | Increase throughput (carrier aggregation tweaks) | Rarely, IMEI change required (illegal in some regions) | | Remove usage caps set by carrier | Requires technical patience |