Turris OS 4.0 beta2 is out!

hi there

how stable is this beta-version?
i don’t need everything to work perfectly, however basic internet access (and thus sfp, dhcp & wan-lan routing) has to work. other than that i’m mostly using default configuration (no wlan) with the addition of openvpn & lxc-containers on a btrfs formatted msata ssd. (I do have installed the following packages as well though i don’t really use them: Data Collection, LuCI extensions, Pakon, NAS, Netmetr, Extensions of network protocols, Cloud Backups.)

is it possible to upgrade without flashing?
i’m fine if i have to reconfigure everything & recreate the lxc containers, no migration needed. however i want to retain at least the current snapshot so in case of an error i can rollback/revert to the current configuration (3.11.4), wheras AFAIK flashing wipes the eMMC.

thanks

[Edit]
just found a note in Turris OS 4.0 alpha3 is out!, that with
$ schnapps create pre-4.0 backup
$ schnapps export 167 /mnt/backup
i can create a usb-stick of the last snapshot.

so is this the suggested way?:

  1. create a backup usb flash drive from current eMMC (as described above)
  2. re-flash 4.0b2 using another usb flash drive
  3. be happy or if it doesn’t work re-flash using the backup flash drive