1.Updated the APN list of India .
2.Compatible with E3272s-927 EC178， K5008-z ，MF668A，K4201,E392, AC682 ,AC782,MF825A .
3.Do not power off the device when upgrading.
4.Only firmware version V1.0.0.XX can be upgraded to this firmware.
5.Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.