- The Radionavi only has a single arrow button to skip songs (>), no fast forward backward buttons (>>). The manual does mention this. We can fast forward, by holding down said button for a while. This allows me to also (slowly) select menue items. However, this seems not to work properly all the times. For instance, I can select "Disc 6" on the HU to access the manual playlist mode. I can then use our skip buttons to scroll up and down, slowly, there is a lot of delay. I can enter the playlsit browser, and the playlists show ... but there, I can't seem to do a lot. If I use the skip buttons to browse the plazlist, like I can in other menues to browse menu items, it will immediatly start playing the first playlist. I can not browse them, it will not move up and down through the playlists as it will for other menues.