[Q] how to create img file from compressed nandroid system.ext4.tartem topic

PLease my phone was bootlooped after messing up with my build.prop file.
The problem is I dont have CMW recovery on my phone neither was usb debugging was enabled on my phone.
So I get a nandroid backup from a friend who use the same type of phone but I dont know how to flash it to my phone.

Note: My phone support adb sideloading and fastboot