Garmin eTrex Summit HC Software 2.70.
Changes made from version 2.50 to 2.70:
# Correct German translation of 'delete all waypoints'.
# Improve sun times for polar regions.
# Allow backlight adjustment on the track back point selection page.
# Fix shutdown when editing Estonian Grid coordinates.
# Correct daylight saving time for New Zealand.
# Correct potential shutdown when viewing a vertical profile.
# Correct European word translation of 'Find' and 'Mark'.
# Support multiple languages in American version.
# Fix screen fading issue in cold temperature.
# Correct total ascent calculation.
# Correct direction symbol of vertical speed.
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