On this post you will find gionee f103 flash file firmware and ime invalid fix file ime repair file available so download file and flash your phone with this file 100% tested by me and gsm users.
How To Flash Gionee F103 with flash tool
Download flash file and extract with winrar.
Download mtk usb driver and install on your computer.
Download sp flash tool and open it.
Load scatter file in flash tool.
Now power off phone.
Press start button flash file.
Now connect your phone with usb cable and press volume down.
Now your phone is flashing wait few minutes.
After complete flash power on phone and enjoy.