Mine is at 1.2.00_261_229. The Arlo iOS app states “no updates available” (doorbell>device settings>device info>firmware). Where on the Arlo website did you find release notes for firmware updates?
Oops! It looks like I clicked on the Solved button too soon. When I unplugged my base and plugged it back in. The doorbell became inactive. I had a red icon with an exclamation point and the message said that the device was unavailable. On a gut feeling I pressd The doorbell button and that activated the doorbell again, but did not update the firmware. Maybe we have to remove the device and reinstall it.?