Jawbone responds to Up activity tracker criticisms with software update

Jawbone has issued the first major software update for its Up line of activity trackers to address some of the issues that people have had with the wearables.

The updates released Tuesday will help resolve some of the problems users have experienced with the Up2, Up3 and Up4, wrote Mimi Huggins, [cq] Jawbone's public relations manager, in an email.

An over-the-air firmware update via either the Android or iOS Up smartphone apps will allow the Up3 and Up4 to collect what Jawbone calls "passive heart rate" data.

Currently, those devices only gather "resting heart rate," which Jawbone defines as the number of times a heart beats when a person is completely at rest, particularly during sleep.

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