Sorry, need more information than that if you want help. Which map update are you talking about? What have you done to obtain it and where doesn't it 'appear'? What map does your 1350 currently have loaded?
Well from that there are no maps to update. Why do you think a map update is available?
If you're sure you're due one (do you have lifetime maps?) then try deleting then reassociating the device with Express. See this FAQ http://support.garmin.com/support/searchSupport/simpleCase.htm?caseId={8a5f1480-ddf1-11e2-7dd9-000000000000}&kbName=garmin
