Using an image found on ToH, http://downloads.openwrt.org/releases/21.02.1/targets/ramips/mt7621/openwrt-21.02.1-ramips-mt7621-tplink_re650-v1-squashfs-factory.bin
I get an Image metadata not found warning.
Is this indicative of a problem in the automated build?
Thanks. For some reason it took me a while to figure out that you weren't making a distinction between Luci sysupgrade and CLI sysupgrade, but rather that I had accidentally downloaded the factory firmware rather than the sysupgrade firmware.