Huawei B310 unlocking is totally different than normal devices, as you have to solder the cables, then you will be able to process further. In similar ways Huawei B310s-22 (Optimus Portugal) unlocking is possible. If your device does not ask for unlock code or want to use universal firmware, then also you have solder the cables to flash the firmware of Huawei B310. You can download B310s-518 firmware 21.300.01.00.00B310s-927 update 21.110.99.02.00 and other from various links.

Recently, various people reported that Huawei B310 LTE router does not allow to change the mode of networks like 2G, 3G, 4G etc. In this post, we will see, how to enable multimode. The multimode can only be enabled, once you change the WebUI with the universal.

Huawei B310 - rollback software

How to change the WebUI of Huawei B310 Router?

  1. Solder the cables as mentioned at here.

2. Install Huawei Mobile Partner in PC.

3. Reset and connect B310 with USB cable to PC.

4. Once started, detect the device under DC unlocker.

5. When you will get the full details of your modem, then at the end of the result paste the following:

at^sfm=1

6. Press Enter from the keyboard.

Note: It will put modem / router in factory mode.

7. Now issue the following command:

AT^reset

Note: It will reset the device.

Note: You can also issue the command AT^GODLOAD to put the device in download mode.

8. Now run the WebUI update.

Note: All the WebUI of the E5573, E5577, E3372 etc are supported.

9. Wait till finish.

Now, you have successfully changed the WebUI.

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