So you think using TWRP instead of LineageOS recovery may be the root of my problems ? Interesting.
I'll try to make a new update at the end of the week, if I have enough time.
Very old ? Two months ? Well... OK.
What do you mean by "manually" ?
OK. I'll try LineageOS recovery.
I don't use OTA today, I only make one update by month (for the security patches). My internet bandwidth is really poor, I need several hours to download a ROM.
OK, that confirms my feelings.
So am I. I also sync some data via CalDAV/WebDAV, make backups of the SMS/MMS database, use oandbackup, and so on... But none of those methods are able to make a complete "system snapshot", so, if the update fails, I have to clean-flash a working ROM, then restore all my apps and data.