Component setup does not save

I have a model wdbaap0000nbk-00
I’m looking to get a firmware that will work with component output. I deleted the current firmware by mistake (dont ask!) downloaded one via update but at the moment I get a picture but its NOT colour. I think I’m connecting via composite. But when I put the cable YPbPr NO SIGNAL. I’ve only got one cable so I cant solve this.
IF I plug the WDTV in to my monitor with HDMI it’s fine.

Any help gratefully received


Make sure your PAL/NTSC setting is correct.