Just to add another data point, our 1.5 eTSI (build week 29/2020) was in for its 2nd annual service today and received the 91CU and 90S8 service campaigns.
Campaign 91CU updated the Device Part Number from no suffix to suffix G, and the Infotainment Software from 1668 to 1896. I'm not sure what 90S8 does.
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After the update I had to log in with my email and password on the infotainment screen. On the first attempt it displayed 'loading settings' for a couple of minutes before failing to load. It worked on the second attempt, though. I then set the primary user using the two key method.
However, the biggest inconvenience is that all the user settings have been lost - including radio presets, satnav favourites and vehicle settings.
ANYONE WHO IS TAKING THEIR CAR TO THE DEALER FOR THE 91CU SOFTWARE UPDATE IS STRONGLY ADVISED TO MAKE A NOTE OF THEIR PREFERENCES BEFOREHAND.
if it's any help, here is my list of the type of settings to be recorded and subsequently re-entered:
Assist Menu
- Front Assist Active
- Advance Warning - Medium etc
- All others 'On'
- In Assist settings (top left of Assist screen) set Eco Assist on/off
Adaptive Cruise Control
- Driving Profile - Comfort
- Last Distance - Selected
- Road Layout Preview - On/Off
- Speed Limit Preview - On/Off
Dynamic Road Sign DIsplay
- Speed Warning - On/Off
Vehicle Menu
- Cockpit DIsplay Eco Tips - On/Off
- Synchronous Mirrors - On/Off
- Lower in Reverse - On/Off
- Door Locking - single door / all doors
Reset the View/Settings for the Virtual Cockpit Display
Turn on Ambient Lighting and Reset the Colour
Reset Radio Station Favourites
Re-pair Mobile Phones
Re-enter phone favourites
Set Satnav Volume - Mute/Unmute
Re-enter Satnav favourites
S-PIN - on/off
Hope this is of some interest.
I haven't had time to check the improved responsiveness of the screen or the abrupt gearbox downshifts that have been reported by some other forum members, but I'll post some driving impressions in the next couple of days.