If your CoolPad Mobile has any issue with software like hanging on logo, Forget pattern and key combination not working then you can solve all these issue by flashing the device. All you have to do is just download the firmware or flash file then use Flash tool to flash the device. Some files are Update, which has to be placed in root folder of microSD card and then flash it through recovery mode.
Firmware has been tested and are Official
CoolPad Flash File List:-