I have extensively googled solutions and tried them all to no avail.
Thanks for the log files.
Did you also uninstall "Windows Mixed Reality" and then try the update?
Extract from the relevant log:
Code:
2021-05-05 23:56:55, Error CSI 000003d4@2021/5/6:06:56:55.162 (F) onecore\base\wcp\rtllib\win32lib\delta_library.cpp(287): Error NTSTATUS_FROM_WIN32(ERROR_INVALID_DATA) originated in function Windows::Rtl::DeltaDecompressBuffer expression: g_pfnApplyDeltaB(( (DELTA_FLAG_TYPE)0x00000000 ), ReferenceInput, CompressedInput, &UncompressedOutput)[gle=0x80004005]
2021-05-05 23:56:55, Error CSI 000003d5 (F) Hydration failed with error NTSTATUS_FROM_WIN32(ERROR_INVALID_DATA) . Delta Type: Forward Delta , IntegrityState Valid: true , RetrievedChecksum: 805645750 , ComputedChecksum: 805645750[gle=0x80004005]
2021-05-05 23:56:55, Error CSI 000003d6 (F) Hydration failed for component Microsoft-MixedReality-Passthrough.appxmain, version 10.0.19041.746, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35} on file Passthrough.exe with NTSTATUS -1073283059. Matching Component = Microsoft-MixedReality-Passthrough.appxmain, version 10.0.19041.423, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35}. FileHasForwardReverseDeltas = false[gle=0x80004005]
2021-05-05 23:56:55, Error CSI 000003d7 (F) Matching binary Passthrough.exe missing for component Microsoft-MixedReality-Passthrough.appxmain, version 10.0.19041.746, arch amd64, nonSxS, pkt {l:8 b:31bf3856ad364e35}[gle=0x80004005]
2021-05-05 23:56:55, Error CSI 000003d8@2021/5/6:06:56:55.162 (F) onecore\base\wcp\componentstore\storelayout.cpp(1682): Error 800f0984 [Warning,Facility=15 (0x000f),Code=2436 (0x0984)] originated in function ComponentStore::CRawStoreLayout::HydrateFileUsingForwardAndReverseDeltas expression: ((SCODE) (((unsigned long)(1)<<31) | ((unsigned long)(15)<<16) | ((unsigned long)(0x984))) )
[gle=0x80004005]
As you can see, mixed reality is listed there.