I have already provided the unlocking solution of Huawei E3272 LTE Cat4 USB stick, Megafon M100-4 (Huawei E3272) Russian modem, Huawei E5170 (E5170s-920) Spectranet Nigeria WiFi router, and Huawei mobile WiFi E5372 of Smart Philippines. I have unlocked one Huawei E5170 of T-Mobile locked successfully. Recently, Huawei has changed its technology totally new and regular router unlock code, which I was providing in only a few dollars, does not work in these Huawei E5170 and Huawei E5372 WiFi routers. Additionally, I was providing Huawei’s new Algo unlock code for only a few dollars. Various users unlocked his different types of modems, dongles, routers, wingles, and gateways at cheap rates. But, when I am talking about Huawei E3272, Megafon M100-4 Russian, E5170, E5372, above mentioned both unlock code will not work.
After a few struggles, I got success in finding the solution for unlock code of Huawei E3272, Megafon M100-4 Russian, E5170, E5372; but it costs me more, and so now I can not provide in less than 6 USD to international users and Rs. 300 to Indian users. Interested users can pay here. There will be no (R) no refund provided for an unlock code of Huawei E3272, Megafon M100-4 Russian, E5170, and E5372.
You might be interested in flashing the firmware of Airtel 21.157.13.00.284.