[Q] install 900 custom roms without root
I'm finding a way to automate customization of an android ROM for 900 cells ( same model)
I have a Csv file with all the info needed, associated to an IMEI.
Then I restore files with adb, install / uninstall app, and configure account with adb shell, or adb input.
I can save a lot of time, but my process is not very accurate.
I DON'T HAVE THE PERMISSION TO ROOT DEVICES.
If I root, install, unroot, will it break my warranty??? ie is there any way to see it???
Is there a way to reboot programatically in recovery mode and load a custom ROM without root using a script???