Error 0x800F081E is CBS_E_NOT_APPLICABLE which means that the update can't be installed on the current system. This happens when a requirement is missing or the installed files have higher fileversion.
I use ADK6 and DISM 10.0.14393 version i mounted WIM and try add this LP to Image ("Dism /image:Z:\Windows_Develop\Temps\Mounted /Add-Package...") ?!!!!!!!!!!!!!!!!! but look this: Microsoft-Windows-LIP-LanguagePack-Package~31bf3856ad364e35~amd64~fil-PH~10.0.14393.0 x86 lp is x64 not x86 lp correct is: Microsoft-Windows-LIP-LanguagePack-Package~31bf3856ad364e35~x86~fil-PH~10.0.14393.0
i try x64 version (LIP fa-IR) on Wim of Windows 10 x64 , installed successfull x86 version have problem.
fa-IR LIP exist but x86 version is x64 microsoft for RS1 has released two fa-IR x64 Microsoft-Windows-LIP-LanguagePack-Package~31bf3856ad364e35~amd64~fil-PH~10.0.14393.0
I think that is not the LP but the Language Interface Pack (the LP's are named, for example, "Microsoft-Windows-Client-LanguagePack-Package~31bf3856ad364e35~amd64~nl-NL~10.0.14393.0".