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.
This maximum rate is based on the person's age. An estimate of a person's maximum age-related heart rate can be obtained by subtracting the person's age from 220. For example, for a 50-year-old person, the estimated maximum age-related heart rate would be calculated as 220 - 50 years = 170 beats per minute (bpm).
Calculating Heart Rate. Your maximum possible heart rate is generally around 220 minus your age. So, for example, a 20-year-old's maximum heart rate would be around 200 beats per minute. The Cleveland Clinic recommends that, during exercise, your target heart rate should be 60 to 80 percent of your maximum heart rate. To calculate your target heart rate, deduct your age from 220.