Okay, I did it.
root@GL-MIFI:/tmp# sysupgrade openwrt-ath79-generic-glinet_gl-ar150-squashfs-sysupgrade.bin
Device gl-domino not supported by this image
Supported devices: glinet,gl-ar150 gl-ar150
Image check 'fwtool_check_image' failed.
I was able to override that with “sysupgrade -F”, but that’s fairly scary. Any chance you would submit to have “gl-domino” added as a valid target for the gl-ar150 firmware? So future upgrades will work properly without having to do the override?