This is what Tesla support told me to do to get the newest update for my connector:
I have also attached instructions for you to be able to get connected to your unit. After you have proceeded with getting unit connected to your home Wi-Fi make sure you leave Wall Connector unplugged from the car for two hours. After the two hours reset the breaker and attempt to charge, if you still have the same charging interrupted give us a call back.
Here are the steps you would use to connect to the Wall Connector Broadcast and Commission the Wall Connector.
Sign into the Wall Connector broadcast by first resetting the Wall Connector breaker for at least 5 seconds, and cycling it back on.
This will start the Wall Connector broadcast. The broadcast is only visible for 5 minutes. If you are not successful in connecting to the broadcast, you may need to reset it again to restart the broadcast.
Search in your Wi-Fi networks for the signal:
The Wall Connector Password is: It is case sensitive (all CAPS)
Once you have signed into the broadcast, then sign into a Chrome, Firefox or Safari page 192.168.92.1 to see the Wall Connector Commissioning page.
Here is the link to the online support page with the information to add the Wi-Fi network in and commission the wall connector:
Installing a Wall Connector
Once you are logged in, follow these steps to change network settings:
Step 1: Select the breaker size, click next or continue
Step 2: Select your home Wi-Fi network and enter your Password
Step 3: Complete the commissioning.
Step 4: If you get a message that shows that it is partially configured go back through and change the breaker to a smaller breaker size and complete the commissioning. Then complete the commissioning again with the correct breaker size and it should now show that the system is fully configured.