Update S3 to 8.71 fails

when I try to update my Watch3 to os 8.71 there is always the Message „no Internet Connection „ but it is.

i have tryed everything like restarting, unpair, flight mode, reset watch, different iphones.

in the logs I see:

3f028000 : Package version "3.0"

3f028000 : Preparation will patch to a snapshot

3f028000 : Package updates 19T572->19U67

3f028000 : Unable to determine userID

3f028000 : Current OS version: 19T572

3f028000 : (Calculating) Verifying the package contents

3f028000 : (Calculating) Verifying with the pre.bom

3f028000 : VERIFY_START

3f028000 : (Calculating) Verifying with the post.bom

3f028000 : VERIFY_START

3f028000 : Verifying the package signature

3f028000 : Could not verify trust (5) using MobileSoftwareUpdate policy. Will try basic X509.

3f028000 : Verifying the package contents

3f028000 : open "/private/var/MobileSoftwareUpdate/softwareupdate.247.uHGJtO/source/payloadv2/ecc_data/Applications/ActivityMonitorApp.app/ActivityMonitorApp" failed

3f028000 : MobileSoftwareUpdateErrorDomain error 7 - The file ./payloadv2/ecc_data/Applications/ActivityMonitorApp.app/ActivityMonitorApp could not be digested: 2

3f028000 : Verify package contents failed.

3f028000 : MobileSoftwareUpdateErrorDomain error 21 - package contents did not verify.

3f028000 : [-[UMEventRecorder _recordEvent:information:callback:]] (prepareFinished) - {

failureReason = "MSU 21 (package contents did not verify.);MSU 7 (The file ./payloadv2/ecc_data/Applications/ActivityMonitorApp.app/ActivityMonitorApp could not be digested: 2);";

installTonight = "false,autoOn,disabled,fg,Manual";

nerdOSUpdateFailureReason = "NRDUpdatedDomain 605 (no running brain);NRDUpdatedDomain 602 (load brain failed);NSCocoaErrorDomain 4097 (connection to service named com.apple.NRD.UpdateBrainServic