below the direct link to download stockrom (firmware) file from google driver or oneclouddriver or ....
stockrom contains flash tools , driver and tutorials ...
how to flash :
1. download and extract the stockrom on your computer
2. install all driver for your mobile , and run SP flash tools
3. after run SPflash tools , you load the scatter file from the stockrom folder.
4. connect your phone to the computer via USB cable
5. click on upgrade/download button in the SP flash tools
6. waiting and when Gren ring will appear at the end of successfull flash .
done and goodluck .