Hi, I have a similar issue as in Write error to USB (MacOS), but on macOS 10.14.6, latest balenaEtcher 1.5.109, trying to flash a lubuntu-20.04.1-desktop-amd64.iso to usb.
Using a 15’ MacBook Pro 2013 and Sandisk Ultra Fit 3.1 flash drive.
I didn’t want to disable SIP.
I tried different downloads from the Ubuntu site and tried moving the .iso to another dir, but it keeps failing to:
Something went wrong. If it is a compressed image, please check that the archive is not corrupted.
The writer process ended unexpectedly
I found the quite similar but old topic Keep getting "something went wrong." error on Arch which boils down to the advice to use the quite old version 1.5.60.
I found this and it seems to work. It flashes the usb. I haven’t tried to use it though.
I thought you’d like to know.