Official ROM link:http://pan.baidu.com/s/1pJBbYoN
1. Download ROM,uncompress the zip file
2. install driver on your PC:http://www.cellphonemic.com/download/ALL_MTK_USB_Driver_2014_v_0.8.2.rar
3. set the flash tool (http://yun.baidu.com/s/1eQCCXjW) like the following picure by using the “MT6582_Android_scatter.txt” file as “Scatter-loading” in the ROM
4. click “Firmware upgrade” button, then connect your Gfive g7 to PC by using usb cable. Then the flash tool will run to ok.
If the flash tool don’t run, please check the COM port in “Device Manager” on your PC to check if you had installed driver all right