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).
1 One basic method is just subtract your age from 220. 2  So if you are 30, your maximum heart rate will be approximately 190 beats per minute. 3  This method is considered more accurate for those under 40. 4  A slightly more complicated recent method is to multiply your age by 0.7, and then subtract that figure from 208. One basic method is just subtract your age from 220. 2  So if you are 30, your maximum heart rate will be approximately 190 beats per minute. 3  This method is considered more accurate for those under 40. 4  A slightly more complicated recent method is to multiply your age by 0.7, and then subtract that figure from 208.