Not sure what you mean by residual files, but OTA process preserves the contents of /home directory.
OTA drive isn't cleared during OTA update, so that's normal.
Not I got the third one, please elaborate.
Not sure what you mean by residual files, but OTA process preserves the contents of /home directory.
OTA drive isn't cleared during OTA update, so that's normal.
Not I got the third one, please elaborate.