@wiak
Thanks for this update. No rush for fix but obviously may be of use to other users of sdcards.
@rockedge
For interest I am trying KLV_Boxer. Launched ok, and via libinput codes got touchpad working (I've no mouse). It is fast and low ram (718M with firefox browser one tab - typing from there now). If you need a tester of anything, I'll happily comply. Could use JWM gui for settings of various basics as an early input.
Update (Boxer): tried xbps-install -Syu. This ran fine, downloaded all new files, but froze up during installation. Twice. Probably too many files in RAM for my meagre 2GB. I may try later just updating browser, if that is possible.