How to unlock Huawei Airtel 3G Dongle E1731
This post explains the procedure for unlocking the Airtel Huawie e1731 3g Dongle for using it with any available networks, such as Tata Docomo, Idea,Vodafone etc! The procedure is pretty straight forward.
- Open your Airtel Dash board and choose Diagnostics from the menu.
- Note down the IMEI number.
- Download this file: E173 Firmware (Download it From Here)
- Download this file: Universal master code (download here)
- Open the Universal Master code and enter your imei number over there. You will get the unlock code and flash code from this. You can use this online generator instead of downloading this Universal Master code file. See the online code generator here: http://a-zgsm.com/huawei.php. Note down the codes.
- Now open up the downloaded firmware(from step 3) and click on next until it asks for the password. Type in the unlock code over there. If it fails open up again and this time enter the flash code. It will work. Click on next and wait till it finishes.
- Click on finish and remove and re insert the airtel dongle.
Thats it, you have unlocked your device. If you have any questions or and feedbacks, please let me know! 
it fail to search data card..
connect your datacard first before doing this! :/
wht to do…data card means..
but its failed what I have to do know
it failed what I have to do now ..?
What do you mean by failed, whats happening?
Tell me what you have done and what result did it give?
It shows …"The device you connected is not a firmware" But in TOOLS–DIAGNOSTIC MENU IT SHOWS firmware VERSION : 21.157.31.00.284
sOTWARE VERSION : 21.005.22.03.284
PLZ send me the remedy…
Are you sure you have this model: Huawei E1731
Please give me the procedure for unlocking idea net setter E303D
no firmware in mediafire.it says the file is deleted
pooooooooooh
no firmware in mediafire.it says the file is deleted
pls my airtel huawei e173 s nt unluckin, wots d reliable n workin remedy
Hello,
please help me to activate 3g on airtel dongle e1731
send me facebook hacking software to my email id
melwynrohith@hotmail.com
no firmware in mediafire.it says the file is deleted
HEy i have unlocked my airtel 3g dongle. thank you so much!!! man……… Just enter unlock code or flash code and do the steps correctly….. Now i can browse internet with any sim… thank you very mUCHHHH bro!!!!
You are great!!!!!
I upgraded my airtel 3g dongle… Now i am unable to change its APN in profile management… Cud u help me????
I fce d vei same problem
some one help us 
when i want to update the friwere it shows failed what can i do i have checked almost frimweres
Link in step 3 is not working
please upload a new file
if the datacard will unl if speed is decrease?
and during unlock it will failure?
It shows failed. why?
173du-1 imei lost