Hello, thanks for the tip, but no longer have access to the RE200. IP has remained the same. I thought about making a change at first, but it didn't change. Pin commands without errors. The connected camera on the Lan port is also transferred. RE200 is connected via 5GHz. The last resort would be to reset the hardware, but if I can no longer access it at all, should I just let it run?

  @Tesla7 

Hi,

Have you already checked whether access through TP-Link's "Tether" app (available for Android and iOS) is still possible?

In case Tether still works and it thought the firmware update wasn't complete, then maybe it would offer you to update again.

  @woozle 

I installed the iOS app and unfortunately only come to a RE200, where the update also finished. Both RE200 are registered in the same 5GHz extension by the Fritz Box. With the problem RE200, the download went through and the installation up to 100% just no restart. The app can also be found only a RE200, which can be reached normally via IP. What else can you do? A hardware set the only one? But if the RE200 is still running afterwards? Currently, as already written, the connected camera on the RE200 works completely normal.

Unfortunately, Tether does not find the RE200 when scanning, but only a model that did the update without a test.