GPS firmware version: MT33333 Version 2.70
Changes made from version 2.60 to 2.70:
. Improved overall GPS positional accuracy.
. Improved first fix accuracy in some cases.
. Improved GPS accuracy for open water swimming (applies to some products).
. Improved GPS positional accuracy for open water swimming (applies to some products).

Upgrade with garmin express. After transfer to device. Restart and go to updates in settings to install.