DC Unlocker is a famous software who unlocks all types of modem available in the world. It supports almost modems of Huawei, ZTE, Micromax, Alcatel etc. Recently it has updated his software to version 1.00.0928. In this version it has added supports for
Huawei E173Bu-1 (Airtel India) (detected as E1731 11.126.29.00.284 Aug 13 2012 19:28:09)
Huawei Ascend G300
And in DC Unlocker v1.00.0930 it has fixed the bugs of Vodafone R205 and E173Cs-1 Airtel detecting. Interested users can download this software from the link which is provided at the end of the article.