Drivers Installation :
Procedure :
To install the USB drivers VCOM the phone must be turned off and connected to the PC with or without a battery depending on the type of device,
get a screen like this in the device manager of the computer
Once you have installed the terminal will be shown in this way (the COM port may be different)
For those who have problems with the installation of these drivers and have had in the past a terminal mtk
they may have a driver conflict, or even if you just do the confusion and installed it different,
to solve, you can try to use the program
usbdeview:
select all items in that report as VCOM USB Preloader in the Mediatek figure right click Unistall and restart the PC.
Installation of the Firmware:
PROCEDURE
1) Setup new Firmware
To download the new firmware.
Unzip the compressed file and insert into the firmware folder:
a) recovery modded (is necessary for receive right root)
Phone off without usb cable and possibly removed the battery and put back for a perfect reset .....
and hold mode 'of off without usb cable connected!
Run Flashtool version octa-core ..... select the file, and then scatter firmware upgrade ...... NOW ONLY CONNECT USB CABLE not before!
Wait for the end of the installation procedure of the firmware and eventually restart the phone!
This' whole simplified procedure for installing the original firmware.