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