How to unlock Beeline Russia E3131 Huawei Modem through Firmware?
2. Now disconnect the E3131 from the internet and close everything related to your Beeline Russia E3131 Huawei dongle.
3. Now, run the downloaded firmware file and follow the instructions until the end.
4. If the device asks for a password during the firmware upgrade, then use flash code (You can generate from Universal Master Code).
5. Now run the card lock unlock tool.
6. Detect your modem under the software and then ask for an unlock code, then provide the unlock code provided by routerunlock.com.
7. Click, OK.