Huawei has recently released flagship router, the B310. This is an upgraded CPE router and unlocking is possible but with the totally different method, that is described at here. In India, its sub-model B310s-927 is available, but it comes with un-customized firmware and can be unlocked easily. But, what if your device has customized firmware and does not ask for unlock / SIMLock code.

Normal firmware change procedure does not work with B310 Huawei. You have to dismantle the device, then further it is possible.

After dismantling the device, arrange one USB 2.0 cable; if not then you can also use cut wire of mouse or keyboard. Dismantle the Huawei B310s-927 and soldier wires as shown in below image. Solder the cables of opposite side of USB 2.0 port to the motherboard of the device.

Note : Any wrong connection will make your device dead.

How to change the firmware of Huawei B310 CPE router?

  1. Download the appropriate firmware from the below link.

2. Download Multicast Upgrade Tool For Huawei LAN Port Routers.

3. Reset the router and solder the wires as in above image.

4. Now, connect to PC with USB cable.

5. Switch the device ON.

6. Install Huawei Mobile Partner in PC.

7. Now detect the device under DC unlocker.

8. At the end of the result paste the following:


press enter from the keyboard.

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

9. Now issue command:


Note: It will reset the device.

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

10. Now plug the LAN cable to PC.

11. Assign a static IP address to the router.

12. Unzip the downloaded file in a folder.

13. Run multicast tool, which you have already downloaded in step 2.

14. Click on refresh to refresh the network card list, and then select the network card whose IP address is (or whatever you have assigned).

15. Click Open.

16. Select the upgrade file is displayed. Select the upgrade package B310*.bin, and then click Open.

10. Click Start to start sending multicast packets.

11. After the successful upgrade is complete, all the five signal indicators will be ON on the router.

12. Click Stop to stop sending multicast packets.

8. Close the firmware upgrade multicast tool.

10. Power off the HUB, disconnect soldered cable and enjoy the B310 CPE router.

Some firmware’s are the following:

Download Firmware Huawei B310s-927 Update 21.311.03.01.1228 (Oman) Free

Download Huawei B310s-927 Firmware Update 21.300.01.00.00 (Universal)

Download Firmware Huawei B310s-22 Update 21.311.03.00.00 (Universal) Free

Download Firmware Huawei B310s-22 & B315s-22 Update 21.311.03.00.264 (P4 Poland)

Download Firmware Huawei B310As-852 Universal

Download Firmware Huawei B310s-22 Update 21.300.07.00.00 Universal


  1. sir i hve done exactly the same,,,how long this procedure will take caz now i have one green light and 2 signal bars white right and left middle one still off.

    • How to solve a unrecognised device?
      I have B310s-927 STC router 4G CEP

      I connected usb cable with device and when u connecte it my pc …
      Pc saying unrecognised device found….

      I also installed Huawei usb driver but still unrecognised???

      How can i solve it?

  2. Hi
    when I solder wires and plug into PC it continuously makes sound of USB plugin. no time to detect hardware, instead it continually connect and disconnect. why?

        • ok so I checked the new firmwares B310s-927
          21.318.01.02.284 have this issue of continuous connect and disconnect when put in usb. so the new 318 firmware is a bit locked.
          so we need usbloader.bin
          some old firmware.exe and new universal firmware.exe

          all I can see are bin files I tried the multicast tool . there is blue led which means it is receiving the firmware and then turns red which means dosent let you downgrade

          or we need 318 universal bin file

  3. Hello i have Airtel Huawei B310-927 already unlocked my router and its showing all network but issue is i am not able to create any APN i tried to update to UI but its keep asking DATA LOCK Code i am entering same code which i use to unlock the router but its not accepting can you please help me out regarding this.

  4. Kamlesh Kumar

    selection :
    manufacturer – Huawei modems
    model – Huawei B310

    Selected Applications port COM16

    Found modem : B310s-927
    Model : Huawei B310
    IMEI : 869341024485417
    Serial NR. : F5S8W16328000232
    Firmware : 21.300.07.01.1179
    Compile date / time : Mar 11 2016 13:49:03
    Hardware ver. : WL1B310TM
    Dashboard version :
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10)

  5. A cannot install Mobile Partner, it blocks at checking port(error code 10). Can you manually give me the drivers for b310s-22 or you know why I cannot install Mobile Partner. I supose dc unlocker could not find my router because of driver missing. Here you can view 2 printscreens, first with my drivers status after connecting b310s-22 after windows driver installation of some drivers with usb soldered and second photo with error code 10 shown in Mobile Partner installation.

  6. Thank You, a succesfully installed Mobile Partner, DC Unlocker recognised my router, the problem is my router don’t want to update, how long multicast upgrade tool have to run to update the router? When I tried only with at^sfm=1 and AT^reset commands, when multicast upgrade tool is running the router first show power led on, network type led dark blue and network signal 1 line (Package file send time -1), and when Package file send time change to 2 then power led is on, network type led is red and signal 2 lines. When I tried with at^sfm=1 , AT^reset and AT^GODLOAD commands, when multicast upgrade tool is running the router show only power led on.Here you have a printscreen with DC Unlocker status:
    And another question, I tried with WebUI update app to make a webui update but at the beginning he ask me for the data lock code, can you help me on this too?
    I think I have custom WebUI because when I used to enter in configurator ( I observed that FlyBox name was colored in orange.
    After all this tentatives of updating when I try to open my router only power led is on, and when I try to enter in webui( I can’t do this, I see a webpage that tells me:
    503 Invalid Status

  7. I am also facing some poblem with B310S-927.
    I ran DC unlocker commands and now I am seeing only power led lit up.
    I do not know what to do next. I saw blog and it says update WebUI however, not able to find the proper procedure and Files required.

    Please assist.

  8. Pls. I have B310s-22 with soft. Version 21.313… Locked to Mtn Ghana. I think this version is high and no matter what USB by Dc detect, Cannot detect. Pls. Kindly tell me what to do. Pls. Email me.
    Expecting to hear from you as soon as possible.

  9. Hi Sir,
    when I solder wires and plug into PC it continuously makes sound of USB plugin. no time to detect hardware, instead it continually connect and disconnect. why?

  10. DC Unlocker

    Found modem : B310s-927
    Model : Huawei B310
    IMEI : 866175028661521
    Serial NR. : AKS7S15A13007483
    Firmware : 21.311.03.00.284
    Compile date / time : Jul 18 2015 08:54:14
    Hardware ver. : WL1B310TM
    Dashboard version : WEBUI_17.
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10)

    I updated my web ui. But my b10s 927 stuck on power led. I am unable to update my firmware also. how to repair it.

  11. Meanwhile Kamlesh, there is a big issue regarding flashing the firmware of this B310…after a while, it losses signal and won’t connect anymore…If you try to reload the firmware, it would brick and never come up again except led light…After several research, I discover the issue is the NVRAM…It get corrupted and the. I hope you find a way out to fix this soon

  12. Hello RouterUnlock,

    Found modem : B310s-927
    Model : Huawei B310
    IMEI : 869341020039374
    Serial NR. : AKS8W15A28007219
    Firmware : 21.311.03.00.284
    Compile date / time : Mar 31 2016 16:51:59
    Hardware ver. : WL1B310TM
    Dashboard version :
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10)

    However I cant change the APN; I’m willing to pay USD$10 let me know if you can help me in this regard..

  13. when I solder wires and plug into PC it continuously makes sound of USB plugin. no time to detect hardware, instead it continually connect and disconnect. why?

  14. how to unlock B310s-925 4G LTE router
    i soldered as shown in the picture and when i connecting to the pc it does not detecting and indicatind as USB does not recognized and under the device manager -universal serial bus controllers-indicating as unknown usb device(device descriptor request failed) and also i tried changing red and black colour wires vice versa
    please help me to solve how to solve this issue

    i downloaded firmware bin file how to load that file to the router


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