Umidigi Crystal MT6750 4GB 64GB 20171125 Firmware BY firmware.gem-flash.com
Umigidi Crystal MT6750 4GB 64GB 20171125 Firmware BY firmware.gem-flash.com
Umigidi Crystal MT6737T 2GB 16GB 20171201 Firmware BY firmware.gem-flash.com
full wtk6750 66 n user 20171125 Firmware