Some android devices especially coolpad use firmware with .cpb extension. This type of firmware can only be flashed or upgraded using YGDP Tool. The steps below will show you how to do just that in few minutes.
Note
Create backup of all your personal data (contacts, sms, photos, etc) before using this tool
Battery should be at least 20%
Do this at your own risk!
Download and install latest YGDP Tool from here
Download and install android universal adb drivers from here
Some device requires other drivers and its usually found in firmware package.
Launch YGDP Tool after installation.
For Password, input 369 and click login
Now on the main screen of YGDP tool, click Config button
Click the folder icon under Please select CPB file
Navigate and select the CPB file of the device you want to flash and click Apply button
YGDP Tool will load and verify file (this will take few minutes depending on size of file)
Click Start button
Turn off device and connect to PC while holding volume up button
Phone drivers will install and when complete, the flashing/upgrading process starts
Do not disconnect the phone during flashing period.
When green progress bar reaches 100%, process is complete.
Disconnect and reboot phone.
Congrats… you have just flashed/upgraded your device
First boot after this process takes longer than normal so be patient.
Hope this helps
if you are having issue running YGDP Tool on windows 7, 8, 8.1, 10, right click on YGDP > Properties >Run as compatibility mode for Windows XP
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