@miroslavbl
Flashing rgn 41 from another 660 would cause you no end of grief even if possible. 6xx cannot retrieve a backup of 41, and anyway it's not what you need. If it can be seen in Windows Explorer/Disk Management as a removable drive, remove GUPDATE.GCD from the Garmin folder. If that doesn't fix it, reformat it with [Only registered and activated users can see links. ]. If it's not recognised by Windows, try [Only registered and activated users can see links. ] first, then remove the GCD file and reformat with RMPrepUSB only if necessary. Post in the Cure3 thread if you need more help.
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