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The offline installer file name should be something like ndp48-x86-x64-allos-enu.exe or ndp48-x64-allos-enu.exe (depending on the architecture and language).

Get-FileHash .\ndp48-x86-x64-allos-enu.exe -Algorithm SHA256

ndp48-x86-x64-allos-enu.exe /q /norestart

Microsoft provides a standalone executable that contains all the necessary files for a full installation without requiring an internet connection.

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How to update the software of a Philips Google TV via the Internet