ServerDatacenterCor 25398.1 to Professional Spoiler: xml Code: 1.xml <?xml version="1.0" encoding="utf-8"?> <unattend xmlns="urn:schemas-microsoft-com:unattend"> <servicing> <package action="install"> <assemblyIdentity name="Microsoft-Windows-ProfessionalEdition" version="10.0.25398.1" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" /> <source location="C:\sxs\Microsoft-Windows-ProfessionalEdition~31bf3856ad364e35~amd64~~10.0.25398.1.mum" /> </package> <package action="stage"> <assemblyIdentity name="Microsoft-Windows-ServerDatacenterCorEdition" version="10.0.25398.1" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" /> </package> <package action="stage"> <assemblyIdentity name="Microsoft-Windows-ProfessionalEdition" version="10.0.25398.1" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" /> </package> <package action="install"> <assemblyIdentity name="Microsoft-Windows-ServerDatacenterCorEdition" version="10.0.25398.1" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" /> </package> </servicing> </unattend> Code: 2.xml <?xml version="1.0" encoding="utf-8"?> <unattend xmlns="urn:schemas-microsoft-com:unattend"> <servicing> <package action="install"> <assemblyIdentity name="Microsoft-Windows-Client-LanguagePack-Package" version="10.0.25398.1" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" /> <source location="C:\Microsoft-Windows-Client-LanguagePack-Package-amd64-en-us.esd" /> </package> </servicing> </unattend> Spoiler: results Code: C:\Windows\System32>Dism /Image:C:\mount /Get-CurrentEdition Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Current edition is: Current Edition : ServerDatacenterCor The operation completed successfully. C:\Windows\System32>Dism /Image:C:\mount /Get-TargetEditions Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Editions that can be upgraded to: Target Edition : ServerTurbineCor Target Edition : Professional Target Edition : Education Target Edition : ProfessionalCountrySpecific Target Edition : ProfessionalEducation Target Edition : ProfessionalSingleLanguage Target Edition : ProfessionalWorkstation Target Edition : Enterprise Target Edition : IoTEnterprise Target Edition : ServerRdsh Target Edition : CloudEdition The operation completed successfully. C:\Windows\System32>Dism /Image:C:\mount /Set-Edition:Professional Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Starting to update components... Starting to install product key... Finished installing product key. Adding package Microsoft-Windows-ProfessionalEdition~31bf3856ad364e35~amd64~~10.0.25398.1 [==========================100.0%==========================] Finished updating components. Starting to apply edition-specific settings... Finished applying edition-specific settings. The operation completed successfully. C:\Windows\System32>Dism /Image:C:\mount /Apply-Unattend:C:\2.xml Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Applying package servicing unattend [==========================100.0%==========================] The operation completed successfully. C:\Windows\System32>Dism /Image:C:\mount /Get-CurrentEdition Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Current edition is: Current Edition : Professional The operation completed successfully. C:\Windows\System32>Dism /Image:C:\mount /Get-TargetEditions Deployment Image Servicing and Management tool Version: 10.0.26100.8521 Image Version: 10.0.25398.1 Editions that can be upgraded to: Target Edition : Education Target Edition : ProfessionalCountrySpecific Target Edition : ProfessionalEducation Target Edition : ProfessionalSingleLanguage Target Edition : ProfessionalWorkstation Target Edition : Enterprise Target Edition : IoTEnterprise Target Edition : ServerRdsh Target Edition : CloudEdition The operation completed successfully. C:\Windows\System32> Spoiler: HOW Code: * Dism /Image:C:\mount /Apply-Unattend:C:\1.xml Dism /Image:C:\mount /Get-CurrentEdition Dism /Image:C:\mount /Get-TargetEditions * notepad C:\mount\Windows\servicing\Editions\EditionMatrix.xml ::EDIT: EditionMatrix.xml * Dism /Image:C:\mount /Set-Edition:Professional * Dism /Image:C:\mount /Apply-Unattend:C:\2.xml * Dism /Image:C:\mount /Add-Package /PackagePath:C:\Windows11.0-KB5087541-x64.msu * ::NOTE: Official Windows updates for build 10.0.25398.1 fail because of Language Pack (LP) mismatches or missing dependent sub-components.