Home repair huawei modem Unlock Huawei E303H (E173) Airtel India Broadband Modem

Unlock Huawei E303H (E173) Airtel India Broadband Modem

Before Huawei E303H modem, Airtel Bharati had launched customized modem Huawei E173Cs-1 model in India. After a few struggle, it could be unlocked using firmware update process, which is described in this article. Airtel Bharti always keeps launching customized firmware modems and routers and he launched Huawei E303H (E173 modem) in India with customized firmware.

huawei e303 modem
huawei e303 modem

You can see the DC unlocker log of E303H Airtel India Broadband modem :


Detecting modem :

selection :
manufacturer – Huawei modems
model – Huawei E173

Selected Applications port COM12

Found modem : E173
Model : Huawei E173
IMEI : 86256502040****
Serial NR. : D8GBYA9410402229
Firmware : 21.318.15.01.284
Compile date / time : Nov 27 2013 09:20:10
Hardware ver. : CH1E3531SM
Dashboard version : UTPS23. .02.00.284
SIM Lock status : Locked (Card lock)
Wrong codes entered : 10 (unlock attempts left : 0)


Note : Below mentioned trick is not tested with Huawei  E303H Airtel Modem, do it at your own risk. Kindly paste the results, after successful firmware update, first 10 Users will get unlock code free of cost. You might be interested in testing with another firmware of Huawei E303 also, you can refer this article. Don’t try the firmware version which starts with 22, it is of hilink modem, but Airtel E303H is not Hilink modem.

How to unlock Huawei E303H Airtel India Broadband Dongle :


  1. Download all the software / firmware from the link which is provided at the end of the article.
  2. Now run Universal Master code software, select Huawei tab and generate flash code for your modem.
  3. Now run the download firmware file of Huawei E303 modem and when ask for password / flash code then provide the flash code (which you generated earlier) as your password.
  4. Now wait for finish the flash process.
  5. Now Close any running software / dashboard / connection manager.
  6. Run the CardLock_Unlock software / tool.
  7. Now put your 8 digit unlock code into the unlock code box and click on OK.
  8. Now you will get message “Unlock Success”


Download Huawei E303 Firmware Upgrade (Firmware Version

Download Universal Master Code Tool

Card Lock Unlock Tool (Password of zip file : modemunlocksolution.blogspot.com)

Update : Now, Airtel E303H solution is available. Unlocking charge is only Rs. 300. Interested people can pay through payumoney.


  1. i got a HUAWEI modem form a mobile ISP, which have a special software and other sim didn’t work in this modem. now how i make it universal to use any sim.


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