Yes. 1. Copy counterpart from higher Builds 2. Change language related settings via Control Panel 3. (Optional for upgrading to next English build.) Change MUI settings via registry Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MUI\PreinstalledLanguages\en-US] [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MUI\UILanguages\en-US] "LCID"=dword:00000409 "Type"=dword:00000091 4. Restart
Apparently not if DISM gives an error, the same thing happened to me with Windows 8 betas, where LP did not apply to the iso if this not come from the same build.
like you see the lang packs is for build 10154 is not for matching even using dism offline so i can't ..:/
en-us 10154 lp doesn't work either. Code: C:\Windows\system32>Dism /Image:D:\iso\wim /Add-Package /PackagePath:C:\Users\whymoo\Desktop\lp.cab Deployment Image Servicing and Management tool Version: 10.0.10147.0 Image Version: 10.0.10151.0 Processing 1 of 1 - Adding package Microsoft-Windows-Client-LanguagePack-Package~31bf3856ad364e35~amd64~en-US~10.0.10154.0 [==========================100.0%==========================] Error: 0x800f081e The specified package is not applicable to this image. The DISM log file can be found at C:\Windows\Logs\DISM\dism.log