Complete system backup before updating a rooted OOS

[Farkas21]

Hello folks

I'm not familiar with the backup without TWRP.

I use Titanium to backup all my apps and data. But how about the system if the update goes wrong ?
How can I keep a mirror copy of the whole system and just restore it through adb or any recovery ?

Additionnal info :
- Everything is working smoothly for now.
- I have updated my system already with system update and kept the root.
- I currently have 10.0.9 HD65BA but I don't have the boot img.
- If I can keep the file on my computer through ADB and restore it if necessary, that would be perfect.

Thanks in advance !

 

[Kollachi]

Hello folks

I'm not familiar with the backup without TWRP.

I use Titanium to backup all my apps and data. But how about the system if the update goes wrong ?
How can I keep a mirror copy of the whole system and just restore it through adb or any recovery ?

Additionnal info :
- Everything is working smoothly for now.
- I have updated my system already with system update and kept the root.
- I currently have 10.0.9 HD65BA but I don't have the boot img.
- If I can keep the file on my computer through ADB and restore it if necessary, that would be perfect.

Thanks in advance !

It doesn't work to backup the whole system.