The only working PC I have is a 32-bit x86 and has a minimal Debian installation. I need to flash a USB with an ISO file from it to make a live system. I tried for a few days to get flathub or appimage working there, but just can’t. I decided an apt package would be the easiest course of action, but neither Rufus, Impress or BalenaEtcher seem to be available in default repos. It there a program that is there? A bare .elf executable with no packaging would also be fine.
Scrolled a while and didn’t see it:
dd if=image.iso of=/dev/yourstick bs=4M ; sync
And what is yourstick? lsblk and determine by size. Use the device node, not a partition, e.g. /dev/sdb and not /dev/sdb1.