Watch firmware v1.5.25 was released today, 25 Mar 2015. Or at least that’s when it installed on my AMBIT3 SPORT. Presumably the same /similar firmware is also available for the other AMBIT3 variants.
I’m yet to look in more detail but this could be the anticipated March update listed <here>.
Today I did a multi-paced interval run looking at the accuracy of the AMBIT3 vs. 920XT with respect to the CURRENT PACE. Interesting results that I’ll post up soon.
Last Updated on 13 January 2026 by the5krunner
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
