I went to the Audi at Costco today to get my HAs updated to the latest firmware (V1.4). The HAs were basically working fine (except for a continuing problem with bluetooth). There are supposed to be some miscellaneous fixes included in this version so I figured that I might as well get them updated. It was a mistake.
After updating, one HA reported a problem with its battery. The other started normally but there was almost no volume. As a result, they are now being sent into the company to get them fixed. I suggest that you avoid this update, at least for now.