Few days ago I got a notification that there is an update available. Also named "11.0.9.0", but different size than the version from end of June.
I have flashed it and noticed that "Clean Master" is inbuilt. As far as I remember that wasn't the case in the previous 11.0.9.0 version, and I wonder...
As far as I know, the L1 support is binded to the phone, and it is written in the persists.img partition.
If this is replaced with any other than the original that was pre-installedbon your phone, you will lost L1 and only have L3.