Press and hold the RESET button (using a paperclip) for 30 seconds. Step 2: While still holding, unplug the power for 30 seconds. Step 3: Plug back in while still holding RESET for another 30 seconds. (Total 90 seconds). Step 4: Wait 5 minutes. The router will boot into "raw firmware" without ISP customizations.
The tool should recognize the device; click "Start" to flash the new, unrestricted firmware. Method 2: Software Bypass (Non-Invasive)
This is the core of the free method. ZTE routers often have a hidden diagnostic page that allows temporary unlocking.
Using the unlocked Telnet access, Alex ran:
Open the Amlogic USB Burning Tool on your PC and load the downloaded .img file.