In India Bharti Airtel is providing there mobile broadband connection using huawei E1731 which is a 7.23mbps hsdpa modem with a most of facility which you can check in E1731 reviews. Earlier they comes in E173u-1 which can easily unlocked by just entering unlock code for E1731, we have provided Airtel E1731 Unlocker and Airtel E173u-1 unlocking solution then they changed the firmware also customized it and its comes in E173Bu-1. Its firmware version number is 11.126.16.04.284 and software version is 16.001.06.07.254 Fakiro which can be easily unlocked by just updating/flashing it with Huawei E173 Firmware in-stand of Airtel E1731 Firmware, you can find Unlocking solution For Huawei E173Bu-1 here. E173u-1 and E173Bu-1 are different version of the airtel E1731 both are coming in 35********** series IMEI. But at the end of May 2012 Bharti airtel has launched E173Cs-1 which has the Customized Firmware (21.157.13.00.910) and huawei has also tweaked with its IMEI and now its starting with 863791010**** so its need the different code calculator then 35******* series modems as per new security algorithm of huawei.
So coming on the point i am here with the unlocking solution for the E173Cs-1. In this i am going to give you the Firmware file of 21.157.13.00.910.B757 and unlocking procedure to unlock 86 series IMEI E1731 but ya i don’t have the code calculator for this modem so.Unlock Code calculator For Huawei New Algo Modem Airtel E1731
Airtel E1731 (E173Cs-1) Unlock :-
First of all connect your modem with the system and let it install the Drivers.
Then install the default dashboard Comes in Modem and drivers.
Download customized Mobile partner with all APN and install it in your modem (How To]Install/Replace Mobile Broadband With Modem’s Default Dashboard (Tutorial))
Then Download the Firmware File E173Cs-1 Update_21.157.13.00.910.B757
Lash The Firmware in your modem if its ask for Password Provide Flash Code generated by using IMEI.
After Fishing the Flashing just insert other sim in your modem and it will ask the unlock code so just provide your unlock code there (Unlock Code calculator For Huawei New Algo Modem Airtel E1731).
Huh you can see the magic yah your modem is unlocked
E1731 Unlocking Proof :-
By using this procedure i have unlocked many E173Cs-1 modem with Airtel logo and 86********* IMEI you can See the proof in below screen shot
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