From Russian forum https://www.reviewdetector.ru/index.php?showtopic=1740349&st=29400
More info (Google translate) :
Based on the data received from Equinox users from around the world, some software adjustments were made to improve the operation of the basic functions of the device. In addition, smoother backlighting has been made possible for the Minelab Equinox 600.
Now the EQUINOX 600 has a function to adjust the backlight brightness - “Low”, corresponding to the minimum backlight level of the EQUINOX 800.
And, probably, the most anticipated - thanks to the addition of a new settings profile, the advanced Iron Indicator feature has become available.
The initial settings of the Iron Indicator EQUINOX (Fe) will also be available, but now it is possible to switch to the new setting Fe 2. When turned on, a wider range of iron targets is cut off from the search, including and bottle caps