Hi, here is the latest firmware of [EU Version]Coolpad Cool S1 Snapdragon 821 Android N Smartphone
Firmware Update Method:
1.Power off the phone, long press “Volume-“ key and connect the phone to PC, then phone will enter the recovery mode;
2.Right click “my computer”, select “Properties-Device Manager-Other Device-Android”;
5.【If you already have adb driver, you can skip this step】Choose to update the android driver: select from my computer-double click android phone and choose adb interface, and then you can install adb driver;
6.After installing driver, run the .dat file “fastboot_flash” in the folder you download from Coolpad FTP server;
7.Then you can input “all” in the DOS window to update your S1;
8.Input “yes” when you complete the update, the phone will restart automatically.