Both Quattro’s updated to 10043.4300 at audi. Repaired/replaced left HA came back from ReSound with .4300 on it.
Edit_Update: On my trip to the audi, I learned about the importance of having both your HA’s enrolled in ReSound (remote) Assist to be able to get updates OTA from ReSound. Not sure about the exact details but somehow in repairing both my new left replacement HA and my old original right HA, the right HA got unenrolled from the ReSound Assist program. As soon as the right HA was re-enrolled by the audi in the ReSound Assist program, the Smart 3D app detected and downloaded the .4300 update for it.
Not being enrolled in the ReSound Assist program, according to my audi, probably explains why a few months ago when the .4000 firmware update came out, the right hearing got the update then but a previous left replacement HA did not. That time, the right HA was duly enrolled in the ReSound Assist program but the audi had forgotten to enroll the first left replacement HA then.
I seem to remember nothing about ReSound Assist shows up on the MyReSound tab if you’re not enrolled. But anyone having trouble getting the .4300 update for their Quattro’s might want to check that (both) their HA’s are duly enrolled. If they’re not, it’s necessary to go to your HCP to get enrolled.