You must have at least 10% battery life
Do at your own risk!
Watch the video below
Download Miracle Box from here
Download and install SPD drivers from here
Launch Miracle Box
Click on SPD tab
Under Choose type, select the chip of the phone you want to flash
Click the folder Icon, then navigate to the folder containing the pac file of the device you want to flash.
Select the pac file
Click Start Button
Turn off device and connect to PC while holding volume down button
(Some new devices require holding volume up instead)
Miracle Box will detect the device and pop up all partitions to be flashed.
Tick whatever part you want to flash on the device and click OK.
(For full flash, tick everything)
Wait for flashing process to complete
When you see Write Complete, know that flashing process is complete.
Disconnect and reboot device
If you enjoy using this software, buy the box to support developers & also get latest updates