Unlock Airtel Datacard latest firmware (Huawei E173CS-1)

Gowtham V
3 Min Read

Many are facing issues while unlocking their new Airtel 3g data card , that’s because the firmware version differs for the Huawei E173CS-1 and  E173Bu-1 dongles. We have already posted on a general unlocking procedure on How to Unlock Airtel 3G Data Card. But the previous procedure will not work with the new Airtel 3G Dongles.

You might also like to Read My Airtel 3g Datacard Review

How to Unlock Airtel e1731 data card series :

Unlock airtel 3g data card

In our previous posts comments i came to know that most of them are not following the correct firmware procedure.

How to Unlock Airtel Huawei E1731 E173CS-1 Datacard latest firmware :

Follow these steps to unlock your New Airtel E1731 Datacard with firmware (

1. First we have to identify the correct firmware of your modem.For this unlocking procedure to work make sure that your firmware version is For checking your firmware go to Tools >> Diagnostics and check the firmware and hardware version of your dongle

2. Download the firmware ( E173Cs-1 Update_21. ) with the below link.Copy and paste the link in a new browser window – https://goo.gl/4XLFr

3. Now Flash the firmware with the new one downloaded and calculate the Unlock code using the  latest Huawei unlock code calculator .(Search in google for latest version using search term  ” latest Huawei unlock code calculator download “)

In the unlock code calculator just enter your IMEI and calculate the unlock code, then notedown the datacard unlock code

4. Now when you insert other network sim other than Airtel , you will be asked for unlock code.Enter the unlock code generated by the unlock code calculator software

5. After the unlock code is correctly entered, your Modem will be successfully unlocked. You can now use SIM of other service providers like Aircel , Idea , BSNL ,Reliance , Vodafone in your Airtel 3g Dongle.

Also read :

Hope you have unlocked your Airtel modem successfully. Let me know your opinion or problems faced while unlocking in comments.We will be glad to help you out.  🙂

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