DC-Unlocker is a great software and, with the powerful team, has recently updated to DC-unlocker client software V1.00.0987. The dc-unlocker team has almost all modem solution, but make sure that DC-Unlocker software is paid and there is nothing free in DC-unlocker.
In DC-unlocker client software V1.00.0987 Added unlock support:
Modems:
Huawei E3121
Huawei E3276
Huawei E355
Huawei Vodafone K3772
Customized modems:
Huawei E173 11.126.29.01.408 Jul 20, 2012, 16:16:33 (Airtel Nigeria)
Phones:
ZTE T54
ZTE T95
ZTE Z331
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Download DC-unlocker client software V1.00.0987