You can also follow these steps: 1  Plug your device in to power and connect to the Internet with Wi-Fi. 2  Tap Download and Install. 3  To update now, tap Install. 4  If asked, enter your passcode.ou can also follow these steps: 1  Plug your device in to power and connect to the Internet with Wi-Fi. 2  Tap Download and Install. 3  To update now, tap Install. 4  If asked, enter your passcode.
One simple method to calculate your predicted maximum heart rate, uses this formula: 220 - your age = predicted maximum heart rate. Example: a 40-year-old's predicted maximum heart rate is 180 beats/minute. There are other formulas that take into account the variations in maximal heart rate with age and gender.
It is typically considered to be 60% of your maximum heart rate, which again depends on your age, gender, and weight. For a 30 year-old male (if I remember the chart on the treadmill correctly), a max heart rate is about 190bpm. High intensity (aerobic) exercise should be at 80% (up to 85%) of your max heart rate.