After the update, please make sure you are still only connected to the Vision-Pro via Wi-Fi. No other "PRE" networks in the list of available networks. Then make sure you have SkyGuardTWX Transceiver selected as the Wi-Fi Device in the Connected Devices. Touch Menu -> About -> Connected Devices -> Wi-Fi Device... to make sure.
This would keep you from seeing the SkyGuardTWX ADS-B Control Panel... I suspect you were not connected to the SkyGuard as the "Fix Quality" should only be reading ADS-B w/ one green bar and a possible WAAS. If you were seeing 3-4 bars, your GPS was not coming from the ADS-B and that indicates it was not connected to the iFly 720, either by Wi-Fi or via the Connected Device software.
I'd double check these settings anytime after a major software update. While we aim to retain these settings, sometimes they are lost in the update. I hope this helps.