I have already covered about unlocking of un-customized Huawei E3372 4G LTE dongle. But, unlocking of Airtel locked E3372 (E3372H-607) Huawei dongle is totally different since it comes with customized firmware. We have already managed to unlock Airtel 4G E3272s-927 and Airtel E3276 data card. We are also providing the unlocking solution of Airtel E5573s-606 mobile WiFi router. It comes with firmware version:

E3372 Airtel Unlock

Features and Specs of Huawei E337Hs-607

Huawei E3372H-607 is a 4G dongle that supports LTE FDD 700/900/1800/2100/2600 MHz and TDD 2300 MHz, 3G: WCDMA(UMTS) DC-HSPA+/HSPA+/HSPA/UMTS 900/2100MHz and 2G: GSM/GPRS/EDGE 850/900/1800/1900MHz operating frequency bands.

Note: Huawei E3372s-153 (Huawei E3370 or M150-2) supports 4G (LTE) 800/900/1800/2100/2600 MHz, 3G UMTS: 900/2100 MHz and 2G GSM: 850/900/1800/1900 MHz bands.

In the market, you can also find out Huawei E3372h-603 and E3372s-607.

Huawei E3372 supports maximum download speed up to 150 Mbps, while upload speed limit is 50 Mbps in 4G LTE network. In DC-HSPA+, it can download up to 43.2 MBit/s, in HSPA+ speed up to 21.6 MBit/s, and in HSDPA speed up to 14.4 MBit/s. In HSUPA upload speed up to 5.76 MBit/s.

It has 2 X 2 MIMO and 2 external antenna connectors (CRC-9 type, buy Huawei E3372 4G Antenna). It is also equipped with a microSD card slot (up to 32GB). It has 88 x 28 x 11.5 mm dimensions and weight is 50 gms. The device supports Windows XP, Vista, 7/8, Mac OS 10.7 or later.

Airtel E3372H-607 is a non-hilink modem and can be purchased in India for Rs. 1400, but you can not use any another network provider. If you want to use Airtel as well as other carrier SIM in the dongle, then you need to unlock it.

Unlocking is one-time work, and after that, you are free to use any another network SIM card, as well as default.

When you will detect in any software, you will find that it has 0 attempts left to unlock it. Means, without firmware change, unlocking is not possible.

How to change the firmware of Airtel E3372H-607 Huawei?

  1. Download the firmware (which you will get after making the payment).

2. Plug the device to PC and let it install all the required files and drivers to run it properly.

3. Now, disconnect the internet and close the software of dongle.

4. Extract the downloaded zipped file in a folder.

5. Now, run the firmware update file.

6. It will ask you password, use firmware code as password, which you can generate from Universal master code or comment below with IMEI to get the firmware password.

7. Wait till finish wizard.

8. Now, change the SIM with any another network provider SIM.

9. It will ask you NCK / SIMLock / Unlock code.

10. Enter 8 digit correct code.

Now, your device is unlocked forever.

Note: Unlocking is not free of cost, you have to pay the charge of Rs. 300. If interested then pay from here.

Update: Idea and Vodafone have launched E3372h-607 hi-link modem in India, both can be unlocked. E3372H (Idea and Vodafone) dongle unlocking charge is Rs. 400.


  1. sir my dongle flashing time firmware is wrong error and the usb modem included airtel LTE 4G software is gone..can you give me airtel e3372-607 connection manager software..
    Please can you sent the airtel installed folder to paulcpchungath@gmail.com

  2. My Airtel modem is not unlock Plz Help Mi
    My IMEI: 866850020376894
    Huawei e3372h
    Please help.

    Found modem : E3372
    Model : Huawei E3372h
    IMEI : 866850020376894
    Serial NR. : Y4QBY15601005420
    Firmware :
    Compile date / time : Feb 17 2015 17:17:50
    Hardware ver. : CL2E3372HM
    Dashboard version : UTPS23.
    SIM Lock status : Locked (Card Lock)
    Wrong codes entered : 10 (unlock attempts left : 0)

  3. sir i flash this firmware airtel 4g dongle E3372h-607_Update_22. after another firmware not upgrade how to solve

  4. Updated the firmware but it did not ask for unlock code…e3372-607…changed the sim nd its not working as it is unable to register to a new network and even the old one morever i am unable to create a new profile….plss help.

  5. Hello Kamlesh,
    I’m ready to pay you Rs 300. Please tell me how to transfer?
    Do you use OLA MONEY? If yes I can transfer you Rs 300 to your OLA ACCOUNT instantly.
    Can you please do this right now? {HUAWEI E3372h-607 of AIRTEL 4G}
    2.firmware code
    3.NCK / SIMLock / Unlock code

  6. Paid 300rs for Huawei E3372h-607 as mentioned above. I need the firmware, firmware code and the 8 digit unlock code. Thank You.
    IMEI: 866850023008643
    Model: E3372h-607

  7. My Device which you have helped in unlocking yesterday got locked again and it takes only Airtel SIM right now. Doesn’t accept any other SIM. If I insert any SIM other than Airtel it shows No service and it working well with other network till evening. I don’t know what needs to be done.

  8. Hi bro,

    I have accidentally installed E3372H-ORIGINAL-WEBUI_17. this file. now my data card is not working so could you please give detailed instruction for unlocking my card.

    Note: I paid Rs.300

  9. Device name: E3372
    IMEI: 866850022828454
    IMSI : 404783111645054
    Hardware version: CL2E3372HM
    Software version:
    Web UI version:
    please help me to unlock it . what cost i have to pay and where and how i will contact you. can i use jio sim after unlocking it.

  10. Hi Kamlesh,

    i already paid the amount as per required(300), but still i unable to use my Airtel Dongle E3372h-607.
    the link which you send me yesterday from same i downloaded and tried to run as per instruction but, its shown error 19 and closed autometically..

    on yesterday you mailed me that you would help me today to resolve issue .. so can you please help me now to use it.. )

  11. Hi Kamlesh,

    i tried to find divice through DC unlocker .. its shown the following result.. pls check and reply

    selection :
    manufacturer – Huawei modems
    model – Huawei E3372h

    Selected Applications port COM19

    Found modem : E3372
    Model : Huawei E3372h
    IMEI : 866850020406394
    Serial NR. : Y4QBY15602002860
    Firmware :
    Compile date / time : Nov 3 2015 20:22:40
    Hardware ver. : CL2E3372HM
    Dashboard version : WEBUI_17.
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10)


  12. hi kamlesh,

    Still its shown ..

    Unlock device
    The device has been locked. Contact your ISP to obtain the SIMLOCK code. Enter the correct SIMLOCK code to unlock the device. If the remaining number of unlock attempts is 0, the device will be permanently locked.

  13. Dear Sir,

    Following are the details for payment of rs300. Kindly send me the unlock code

    Payment ID: 128765029
    Merchant Order ID: 195439-128765029

    Model of the device
    HUWAEI E3372H-607

    IMEI of the device

  14. Hi i am using Vodafone R206 I dongle….
    It asking 16 unlocking code for other network but universal master code shows only 12 digits code…
    How I get 16 digit code???

  15. Hi Kamlesh,
    I have an Airtel 4g dongle E3373h-607 with the default firmware. Can you confirm that you can unlock this ? If not, do you give refunds ?


  16. Hello
    I have unlocked my device huwaeiE3372H607 AIRTEL .
    Its working okay for all other sims now .

    Can i reverse it to original state before unlock .
    I want to convert it as factory default software as airtel provide.

    please suggest if possible.

  17. Hi I have changed the firmware of airtel e3372h607 4g DONGLE also installed driver and updated webUI but yet it is not opening any driver

  18. I tried to unlock my Airtel 4g dongle of model E3372h-607 , but can’t unlock it. Now it becomes useless as it can not detect the Airtel sim also. What should I do? Please suggest. After installing update of farmware, h link driver and web UI it becomes useless, only white light is blinking now.

  19. sir I need a firmware password for my airtel 4g dongle Model no. is E3372h-607,
    my IMEI No. is—866850022198692

  20. Dear Sir,

    I tried following your instructions and after installing update and webUI, now my modem does not detect airtel sim itself. Can you kindly unlock it? i am willing to pay.

  21. Help me Huawei E-3372 607 Modem is Permanently Locked zero count remaining to unlock it .i used all unlock softwares but it didn’t work and detect the modem for unlocked .please help what me do to reset this modem please…….


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