No, unfortunately it's not possible. Read again the first part of my reply above, but perhaps my wording wasn't clear i'm sorry. '6xx cannot retrieve a backup of 41' = 'You cannot do a region 41 backup of a 6xx'. The problem's not to do with the SD card, I think the command is simply not present in firmware of nuvi 2xx/3xx/6xx or earlier SP units either. I recall that rgn41 backup was not possible until nuvi 2x5/7xx series. Backups of other regions can be done though in 6xx nuvis, ie. rgns 5, 14, 15, 16, 24, 34, 45.

In an extreme case as an absolute last resort it is possible to erase 41 in a 2/3/6xx series to restore a unit to semi-working condition if rgn 41 is corrupt. The problem is that all registration and unlock code are removed from the unit in the process and that makes updating with purchased maps impossible unless they are purchased on an SD card to which they are locked. Unlocked maps can still be loaded to internal memory normally.

One of our software experts should be able to write the command into the firmware to allow backup of 41. Who's up for the challenge guys?? ........ [chirp, chirp ...... chirp ....] ........ guys? .... anyone??