Is the Rider v2 still in its original condition?
If so then a bootloader update is needed
After this update, which will contain a small risk, SDHC cards are possible up to 32GB, after which it is no longer important which map you want to use.
A flash update of the GPS is also required under the same conditions as the bootloader update.
New operating software will then be version 9.500 or 9.501 and for example the full Europe map can then be used.
The necessary files you need are no problem
P.S.
You'll find all necessary files including an instruction video at the link below:
[Please Register or Login to download file] P.P.S.
The instruction video is only for NAV3 devices.