1) Check the firmware version
2) If firmware version is:
C6xxxxx, pls download CiPhoneC6sxxx.exe
C6sxxxxx, pls download CiPhoneC6sxxx.exe
C6txxxxx, pls download CiPhoneC6txxx.exe
3) Double-click CiPhoneXXXX.exe, and follow the instructions to
complete the installation.
4) It pops up a Windows to alert you to plug in the phone.
5) Before you plug in the phone into PC, you have to switch the phone
to “Download Mode”
6) Switch on the phone
7) Press “Power key”, “Volume Up” & “Home Key” simultaneously.
8) Hold these 3 keys simultaneously and then reset the phone
The phone will enter a “Download Mode”