Download UMI android smart phones Stock ROMs (firmwares).
You will need to extract the firmware in a separate folder on your computer. You can Download 7zip from Here or winrar Here to extract them.
Learn How To install Stock Roms with sp-flashtools Here
How to Fix Network Error, Imei repair and NVRAM Backup For all MediaTek devices. Here
AVAILABLE ROM DOWNLOAD LINKS FOR UMI PHONES: