Hi guys,
The Nav in my 2005 E53 is failing to read the map disk more and more frequently.
I have a backup High ISO but its 6.4GB (DVD9) in size, which will only fit on a DL (dual layer) disk.
Would anyone know if this should be readable on a MK4 unit? I've only managed to get hold of DVD+R DL 8.5GB and these definitely don't seem to be readable. As far as I know only -R are compatible?

Thanks in advance for any advice/experience
Cheers, Kevin