And by the way, recommended by David Solo 104 version doesn't support ZD7055, so don't try to use it...
I am not sure if the 100.1 is the latest, but at least it's one of the last supporting this old AP. It is always mentioned in release notes for the version, what APs are supported. Never try to load wrong model firmware to AP -- in the best case upgrade will fail, in the worst you'll brick the AP.
you just need to connect to GUI (best to factory reset AP first) and then upload a solo version from our support portal, with this link