Sensus Connect Error after card update

Hello together I have a big problem and hope that you can help me: We have a V40 MJ2015 and wanted to record the card update, which apparently went wrong. My procedure: 1. SW loaded with the Volvo software on a 64GB stick (just 18GB) 2. USB stick plugged in in the center console. 3. Ignition turned on 4. Starter battery connected to a charger. 5. After the display was “start update” confirmed with OK. 6. Run let And from now on my problems start… As good as I was, I left the whole thing unobserved in the garage, because it was there, about 1h30. When I came back after about 1h, everything was dark. So I switched on ignition again, in the hope that the update is finished. Far missing. Now on the display was that I should insert USB1. So stick out and back in. Look, after 1min the blue update bar jumped to about 35% and made far he. this time I stayed about 30 minutes and the beam moved. after a short time then the message came that the Connect turns off in 2 min to save power. Unfortunately there was no “abruption” or other. Now the car turned off again. Slight panic took off. So quickly on the homepage and read it. Supposedly no problem, since the Karch continues to the place with the update again, where it was interrupted. But somehow I believe that I We have now driven by car about 2x 30min and the navigation function is dead. The USB stick is still in it. Tonight everything is connected again and nothing works anymore. On the display, after pressing the navigation button, only “navigation starts”. All the other functions go (radio, media, etc) as usual, “only” the navigation is no longer possible. Can anyone please give me a help? We would like to go with the car next week on holiday drive… Thank you so much!