Huawei has released E5372s-32 MiFi WiFi router, which comes in Indonesia locked to Bolt carrier. It comes with customized firmware and does not accept the unlock code / NCK. The only solution is that flash the device with un-customized firmware and then only you can unlock E5372.

DC unlocker has created a software, calls it Huawei E5372 Bolt Unlocker v4, can be used to unlock customized E5372s-32 Bolt MiFi WiFi router. But, he charges 7 EURO for unlocking of one device. I have already tried with all available firmware of Huawei E5372, but no success in flashing the device.

Finally, I got the E5372_Update_21. (Bolt E5372s-32 Downgrader), that flashed the device successfully and in the firmware upgrade process only, it got unlocked too.

In any case, firmware update gets failed, then use Huawei R215 – E5372 flasher tool to repair bricked E5372.

How to Unlock Customized Huawei E5372s-32 Bolt MiFi WiFi Router of Indonesia ?

1. Download the E5372 downgrade firmware from the link which is provided at the end of the article.

2. Connect device to Windows PC with USB cable.

3. Disconnect internet, close any running software and web browser.

4. Run the firmware update tool.

5. It will ask you password, use firmware code as password (If you don’t have firmware update code then comment below with model and IMEI to get it free).

6. Wait till finish the firmware update.

7. During the firmware update, your Huawei E5372s-32 Bolt MiFi WiFi device of Indonesia will be unlocked.

Note: Don’t try this procedure with any another device, it may brick your MiFi. Some users say that it does not work with 4G Bolt network. So, do at your own risk.

It should work with firmware version (Build Mar 15 2015, 10:52:54) and too, if not then let me know.

Download Firmware Update E5372_21. (Bolt E5372s-32 downgrader)


        • Tried doing as per instructions. The update wizard program detected the device and then shows updating. In few minutes the Bolt device was rebooted and it showed an Up Arrow with a msg “Do not power off” since last 15 mins. However the Update wizard suddenly gave a message “Error Code 17, The wireless terminal inserted is not E5372, Update Wizard can’t continue”. The device is Huawei E5372 for sure and is still showing the Up arrow with the msg…no changes. Please help!

  1. need unlock code
    MODEL: E5372s
    Hardware version: CL1E5372SM06
    Software version:
    Web UI version:
    plz help me

  2. it is already disable and the problem still there

    if u have e-mail please to send you a screen shot of this error.


  3. imei: 860650029034817
    i tried this password 48324206 but not working, the current firmware is:
    Please help to unlock – sim lock

  4. Hi kumar, could you help me ? i need firmware code for my device. Big thanks
    Device name: E5372s
    IMEI: 863959024368***
    Software version:

  5. dear brother,
    dear need me a help, regarding Huawei modem Zain Saudi arabia, E5372s, it is 4G modem 4G is working with zain sim, but STC sim card 3G working how i can update to work 4G with STC sim card.

    Model : Huawei E5372s
    IMEI : 864578017222316
    Serial NR. : N7GDW14A31003639
    Firmware :
    Compile date / time : Mar 27 2014 15:35:09
    Hardware ver. : CL1E5372SM
    Dashboard version : WEBUI_15.


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