I was reading an article about updating the software in my Garmin. Question: How do I tell what version of software is installed in my GPS? I bought my eTrex Legend last year in October. The latest version for my unit is 3.70 and I have no idea what version I have or if I should update. The up date page has all these warnings: Reverting back to previously released versions will clear user memory. Users are strongly urged to back up any user data they wish to save. WARNING: If your current software version is 2.50 or lower, this software will clear all unit data including alamanac information. Back up all user data before upgrading. After installation is complete, place unit with a clear view of the sky for 15-30 minutes to re-acquire almanac data. WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device. If attempts to upload software fail, you may need to return the device to Garmin® for service. Any ideas on how to tell what version I have or other advice? Thanks, Sarah (Crowesfeat30)