i have a hAP Lite in production use. But i cannot upgrade (or downgrade) it because there is not enough free space.
Look at the attached picture. There is no additional packages, no files, but my free space is only 4,5 MB. The base router os package is 4,9 Mb. I cannot upload it to update only the base packages (as i read on forums this is the only solution to update such hardware...)
Because this router is in production use, i cannot do a netinstall, os something like that.