Force 50Hz in GUI

I want GUI to boot and stay at 50Hz always.

If I change refresh rate to 50Hz in System settings it keeps it until the next restart. After restart it boots in 60Hz.

Is there a way to force Kodi to boot and stay at 50Hz?

Quote from ukmark62

ssh into your box and then issue following two commands:-

fw_setenv hdmimode 1080p50hz

fw_setenv outputmode 1080p50hz

This works for myself.

Thank you!