Take the polar out and update it with your pc using IE to firmware 0.47 en red dot.
Due to space limitations each firmware file contain only one language file so please take care and select 0.47 en red dot when update your box.
Please use ActiveX from the official web
www.auto-polar.com (Update Zone)
The reason you are having issues is the mk 6 has a white/coloured display whereas the mk5 has a red colour display and the two are not compatible.
Post back if you have any issues when updating.