Thanks for replying! Yes that was the attempt at least. I had an SD card connected to my laptop (win10) that it self was connected to my NAS via the LAN. The python server part was setup on another win10 PC though.
Honestly at this point am both learning and trying to evaluate the best and efficient way to handle .img files from Raspberry Pi. In conjunction to testing etcher i tried PiShrink.sh script and imgclone script (both from github) to shrink and use the .img with etcher. This why I tried using the flashing from URL part to not be forced to only use etcher from local drives. Maybe etcher doesn’t have the ability to promt for password or ignore self renewable certificates?
Imgclone was tested with mounting the drive from the RPi using DS as destination drive during backup but with etcher it would be as source drive for restore. I guess it would be nice to know if etcher has some limitation in how it can access network shares. Becuase it seems to be able to access the LAN share if it’s http and not password protected like in the case with the python server.
I would also like to take the opportunity to ask in case you have some knowledge. These scripts seems very good in particular PiShrink to shrink the .img file by reducing empty space however I concluded that PiShrink never produce .img file with the same sha256 hash, do you know why?