: If you need an offline installer for Android, Uptodown provides verified versions of the Sony Remote APK. For Firmware Downloads (Mainboards)

: A Sony Remote Control app is available through the Microsoft Store.

If you specifically need the .rar file to flash a TV board (like a TP.VST59.P83 or similar universal board): Remote For Sony TV -WiFi/IR – Apps on Google Play

If you are looking for an app to control your TV rather than hardware firmware, you can download various directly from official stores: