Breaks Widevine L1 DRM certification (losing 4K playback on Netflix), often disables the built-in DVB-T2 tuner functionality entirely.
Be aware that the KT1 bootloader is often locked, making it very difficult to install third-party OS options like CoreELEC without soldering to the UART pins. Where to find KT1 stock firmware for a bricked box?
What (if any) are you experiencing with your TV box?