I just realized this was about UUP dump conversion but we are in the LTSC thread, no LTSC on UUP available!!!
Thank you, but first I need an upgrade of the Win10 21H2 LTSC ISO-file, updates for May 2024 - December 2025 ...
Windows 10 IoT Enterprise LTSC 2021 French (fr-FR) x86 Host OS: Windows 11 25H2 + Windows 11 26H1 ADK Spoiler: Configuration Code: ====================== W10UI v10.59b ======================= [1] Target (x86): "C:\fr-fr_windows_10_enterprise_ltsc_2021_x86_dvd_53f189f9" [2] Updates: "C:\W10UI" [3] DISM: "Windows NT 10.0 ADK" [4] Enable .NET 3.5: YES [5] Cleanup System Image: YES [6] Reset Image Base: YES [7] Update WinRE.wim: YES [M] Mount Directory: "C:\W10UImount_24265" [E] Extraction Directory: "C:\W10UItemp_23177" ============================================================ Change a menu option, press 0 to start the process, or 9 to exit: Spoiler: Progress Code: ============================================================ Running W10UI v10.59b ============================================================ ============================================================ Configured Options... ============================================================ Net35 LCUmsuExpand 1 Cleanup ResetBase UpdtBootFiles WinRE LCUwinre 1 ISO Delete_Source ============================================================ Extracting .cab files from .msu files... ============================================================ 1/4: windows10.0-kb5011058-x86_09769937c504ba830627ecbac9986e1196ff33c3.msu 2/4: windows10.0-kb5019180-x86_d4a21cd3c5165b7fa57e7b8b9fa26a7126fc53c3.msu 3/4: windows10.0-kb5087053-x86-ndp481_86b9e8b43fa3c155cac9f0628aa7536d73a7e13b.msu 4/4: windows10.0-kb5087544-x86_3719962c91f8d081b4ef3f38edb8514703f7b2eb.msu ============================================================ Extracting files from update containers (cab/wim)... *** This will require some disk space, please be patient *** ============================================================ 1/9: defender-dism-x86.cab 2/9: windows10.0-kb5007401-x86_70e75294c8753f96b7d1b036c9caa9ab9ab5e1f2.cab 3/9: Windows10.0-KB5011048-x86.cab [NetFx] 4/9: Windows10.0-KB5011058-x86.cab [NetFx] 5/9: Windows10.0-KB5019180-x86_PSFX.cab [Microcode] 6/9: windows10.0-kb5074207-x86_867ec3f2ec6f743c7f14ae2527188eb25f6e8851.cab [Setup DU] 7/9: Windows10.0-KB5087053-x86-NDP481.cab [NetFx] 8/9: Windows10.0-KB5087544-x86.cab [Combined] 9/11: windows10.0-kb5087593-x86_d3ac30741a418ed166244b65efcaa8044215fefc.cab [SafeOS DU] 10/11: Windows10.0-KB5084130-x86_inout.cab [SSU] 11/11: Windows10.0-KB5087544-x86_inout.cab [LCU] ============================================================ Mounting sources\install.wim - index 1/1 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_7183~31bf3856ad364e35~x86~~19041.7183.1.10 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19044.1288 Processing 1 of 5 - Adding package Package_for_KB5011048~31bf3856ad364e35~x86~~10.0.9110.10 [==========================100.0%==========================] Processing 2 of 5 - Adding package Package_for_KB5007401~31bf3856ad364e35~x86~~19041.1378.1.1 [==========================100.0%==========================] Processing 3 of 5 - Adding package Package_for_KB5011058~31bf3856ad364e35~x86~~10.0.1.8028 [==========================100.0%==========================] Processing 4 of 5 - Adding package Package_for_KB5019180~31bf3856ad364e35~x86~~19041.2673.1.1 [==========================100.0%==========================] Processing 5 of 5 - Adding package Package_for_DotNetRollup_481~31bf3856ad364e35~x86~~10.0.9334.5 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~x86~~19041.7291.1.12 [==========================100.0%==========================] The operation completed successfully. ============================================================ Resetting OS image base... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19044.7291 [===== 10.0% ] [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19044.7291 [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding Defender update... ============================================================ Platform : 4.18.26040.7 Engine : 1.1.26040.8 Signatures: 1.451.119.0 .NET 3.5 feature: already enabled ============================================================ Updating winre.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Mounting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_7183~31bf3856ad364e35~x86~~19041.7183.1.10 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1 Processing 1 of 1 - Adding package Package_for_SafeOSDU~31bf3856ad364e35~x86~~19041.7290.1.4 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7290 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~x86~~19041.7291.1.12 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [===========================90.1%==================== ] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image File : C:\W10UI\winre.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding updated winre.wim ... ============================================================ 1 file(s) copied. ============================================================ Unmounting sources\install.wim - index 1/1 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image File : C:\fr-fr_windows_10_enterprise_ltsc_2021_x86_dvd_53f189f9\sources\install.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Rebuilding sources\install.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Mounting sources\boot.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_7183~31bf3856ad364e35~x86~~19041.7183.1.10 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_KB5019180~31bf3856ad364e35~x86~~19041.2673.1.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~x86~~19041.7291.1.12 [==========================100.0%==========================] The operation completed successfully. ============================================================ Resetting WinPE image base... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [===========================67.7%======= ] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [==========================100.0%==========================] The operation completed successfully. ============================================================ Unmounting sources\boot.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image File : C:\fr-fr_windows_10_enterprise_ltsc_2021_x86_dvd_53f189f9\sources\boot.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Mounting sources\boot.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_7183~31bf3856ad364e35~x86~~19041.7183.1.10 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_KB5019180~31bf3856ad364e35~x86~~19041.2673.1.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~x86~~19041.7291.1.12 [==========================100.0%==========================] The operation completed successfully. ============================================================ Resetting WinPE image base... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [===========================73.6%========== ] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image Version: 10.0.19041.7291 [==========================100.0%==========================] The operation completed successfully. ============================================================ Unmounting sources\boot.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Image File : C:\fr-fr_windows_10_enterprise_ltsc_2021_x86_dvd_53f189f9\sources\boot.wim Image Index : 2 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Rebuilding sources\boot.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.28000.1 Exporting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.28000.1 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding setup dynamic update(s)... ============================================================ windows10.0-kb5074207-x86_867ec3f2ec6f743c7f14ae2527188eb25f6e8851.cab ============================================================ Removing temporary extracted files... ============================================================ ============================================================ Creating updated ISO file... ============================================================ ISO Location: "C:\W10UI" OSCDIMG 2.56 CD-ROM and DVD-ROM Premastering Utility Copyright (C) Microsoft, 1993-2012. All rights reserved. Licensed only for producing Microsoft authorized content. Scanning source tree (500 files in 42 directories) Scanning source tree complete (907 files in 88 directories) Computing directory information complete Image file is 4700766208 bytes (before optimization) Writing 907 files in 88 directories to 19044.7291.260505-2337.21H2_RELEASE_SVC_PROD1_CLIENT_X86FRE_FR-FR.iso 100% complete Storage optimization saved 24 files, 14471168 bytes (1% of image) After optimization, image file is 4688371712 bytes Space saved because of embedding, sparseness or optimization = 14471168 Done. ============================================================ Finished ============================================================ Press 9 or q to exit.