I attempted to download the latest 2.57 firmware for the Explorist 500 (European is the only 2.57 I could find). However, their site now requires you to log in before downloading, and it realizes I only have a North American 500LE registered and won't let me download.
Can anyone who has been around the Magellan camp for a while speculate as to when they may release the 2.57 firmware for the North American models?