1) No matter which version, they have to be an SD card (ID) that has never been placed in MB Download Manager. If it was already used in MB download Manager it probably will not upgrade maps.
ID is on the garmindevice.xml
<Volume Permissions = "1" Free_space = "14827226088" Id = "1XXXXXXXX2" Name = "Internal-0" />
<Volume Permissions = "- 1" Free_space = "0" Id = "1XXXXXXXX2" Name = "Internal-1" />
2) If it is a purchased version of ebay, it probably will not upgrade maps. Almost sure that all SD cards sold on Ebay are clones, unless sold with a cover, brochure and sealed !!!!
There will be tons of buyers updating the same SD ID in MB Download Manager.
The ID can be seen on the Audio 20 CD and Garmindevice.xml and it is probably also with this ID that the SD card activates the livetraffic.
All SD / ID's are registered in the MB download manager through the vehicle's vin number. You can check when trying to recover the SD card through the VIN.
Note - ID is not the CID
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