Updating thumbnail
			 
			 
			
		
		
		
		
			
			Hello, 
 
maybe a simple question, maybe not. I have imported to new books on my dr1000. They've had no picture-cover, when i did the import. I changed the cover within calibre, changed the files on the sd-card and deleted the metadata.db. But the old thumbnails are still there instead the new ones with picture-cover. 
 
Is there a way to update only these two thumbnails without destroying the thumbnails of the rest of the sd-card, e.g. with deleting the global.db? 
 
Best regards 
ThR
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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