For the few remaining fans of Pie, I have just uploaded a new build of my unofficial LineageOS 16.0 for Pro1 (SDS835). At
http://findus.zwergenschaenke.net/~puma/linux.html#lineagepro1
go for the ROM dated "20240515".
After many months of near-inactivity on my side, this build again introduces significant improvements (or so I think). As usual, it gives you security patches backported from the ASB up to May 2024. Beyond that, I finally upgraded the bundled version of WebView -- which had not been updated in 2 years -- to Chromium 124.0.636.82 (the version used by recent LOS 21).