Quote:
	
	
		
			
				
					Originally Posted by  Uphantom89
					 
				 
				I couldn't downgrade to 5.10.1.3. Error report: invalid update file ; ( I did install the latest hot fix) 
			
		 | 
	
	
 Is it initial factory 5.10.1.3 (not customer) for sure?
If so, Amazon might block the downgrade possibility in 5.12.5.
So the only way to downgrade is via Ilovejedd's trick.