Default [Q] Htc one doest find update 4.3

Hi all,

I just bought a second hand htc one that is running android 4.2.2 i tried to update to android 4.3 and it doesn't find it.
This is very strange cause this update has been out for a while in my country (Belgium).

I was wondering if i could force it in to updating.

My htc one is the sense version not the google edition.

Thanks.