This is how you flash to eMMC easily

[gregb49]

Strange, Etcher isn't detecting my Pinephone anymore, is the main board dead? The phone refuses to turn on, too.

EDIT: Looks like re-flashing Jump Drive might have fixed it.

I thought I had bricked my 'phone as well whilst flashing mobian-installer-pinephone-phosh-20221120 as no LEDs came on at all on restarts. It seems obvious now, but the next day I tried booting the multi image + Jump Drive, from an SD Card again (xnux.eu) which was fine. I've now installed mobian-installer-pinephone-phosh-20220116 which seems to be fully functional. (UBPorts sadly wasn't after all, for me).

EDIT: Dec 21st 2022. Unfortunately Mobian wasn't as reliable as I had hoped but ArcLinux Posh seems to have the 'phone functionality that I require. I just need to learn how to do a few more things now like read an ePub and add a Podcast nplayer.