Navman NavPix N40i GPS Receiver "f45" Questions

I have an Navman F45 and have set it to German by mistake, how can I reset it to English? Try this out http://www.navman.com/docs/manuals/navman-f35-f45-manual-en_gb.pdf

manuel for a navman f37m HiDownload the manual from the link below.www.navman.com/docs/manuals/navman-f35-f45-manual-en_gb.pdfHope it helps.Thanks

How do I fix the navman f45 from being only in demo mode? Only possible to switch on and reset Demo mode is switched of in settings under the menu called "about".