My 2535 tells me that my maps are 8 months old. Device says the version is 885.4102 with a release date of 1/2012. Managing content says New items - "Your navigation device is up-to-date" but says My Maps - "USA, Canada & Mexico Version: v8.85 Active on your device". If I click "install', I get a "not enough available memory" error. The update is 2.7 GB. Available free memory is 490.62 MB. How do I fix this problem?