Is it possible to overwrite the system factory reset option with my own backup?

Question

Please i need to know if it is possible to overwrite the system factory reset option with our own backup file. Basically, i am interested to tune the factory reset option with my own custom full system backup.



In other words, i want to restore my custom backup when i click on the factory reset option instead of restoring the original settings of the factory.



Note 1: I have already rooted my Android device (Huawei Honor 7 - PLK-L01).



Note 2: My objective is not restoring a backup. I know how to restore a full backup. I need though to understand if it is possible to configure the factory reset option with my own backup. I really like to understand the procedure to do that if it is possible.



Thanks in advance for your help!


— Ken | Sources

Answer

When you start the factory reset in the settings it just runs recovery which the actual resetting is done by. Normally, recovery just wipes everything in /data and /cache in all (and /sdcard in most of) phones, since that is all a non-root user can modify.



So a factory reset is not a fresh install of the ROM. It is just the wiping process of every made-by-user change on the phone.



I want to stress it since as much as I understand you think factory reset does some sort of overwriting. It doesn't do that. Vice versa it wipes stuff. It, by default, doesn't restore, install, overwrite anything.


— SarpSTA | Sources

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