@bert smith
Now we know the device type ,I've tried two zumo 590's both give the option of using an SD card
Spoiler: zumo 590 update
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Either contact Garmin EU as suggested or what I would do is copy the garmindevice.xml from the device to a clean FAT 32 formatted SD card (clone device)and update it that way. As you have Lifetime maps they will be unlocked by GE for your device, rename and arrange the files. i would clean up the old device files and place SID SQLite & JCV files you download with the SD card (clone device) in their respective folder on the device.
Spoiler: Files
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