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					Originally Posted by  pepe_alter_ego
					 
				 
				Well, try to check your downloaded file. The "update_kindle_5.3.4.bin" should be 171598529 bytes long and its md5sum should be "579c8d8f6f38111e1e02105349505b42" (or its sha1sum which should be "9c87da5c32acc94ccf433f198f18606fcab6201b"). 
 
I assume that when you say "tap the update device button" you actually mean a two step procedure. First you enter "Main Menu" -> "Settings" and then when the "Settings" screen is displayed you enter "Main Menu" -> "Update Your Kindle". 
			
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 the files long is true but I don't understand what is md5sum. 
Yes exactly ı did the way you said