Firmware updated to T713ZSU2AQA1 (downloaded from
updato)
Then flash with heimdall
Note : on Archlinux, i had to use the AUR package "heimdall-git" (flashing didn't work with the community "heimdall" package, even if both package have same release number).
Most seems to work fine, except some
wifi issues (sometime the wifi is lost and i need to hard reboot the device to have wifi back).
EDIT :
frequent unwanted wifi disconnections / autoreconnection (annoying with Chromecast).
EDIT2 : LineageOS statistics doesn't mention country i am from. Because no SIM or is it an issue?
PS : i'am happy to have an official LineageOS release for the SMT713 - thank you to maintainers - but was not happy to have no more clear information about the required firmware update, simply announced on a post on this thread. This kind of thing need a clear warning on first post / installation wiki / how to, it is not very common.