Reset Garmin Watches (405, 310xt)

Forerunner 310XT


Soft Reset

1. Connect device to computer (except on Forerunner 310XT)
2. Press and hold Mode and Lap/Reset for 10 seconds
3. Release both buttons
4. Power device on once device starts to charge

Hard Reset (erase user data)

1. Start with device powered off^†
2. Press and hold Mode and Power
3. Release buttons once Do You Really Want to Erase All User Data? message appears
4. Select Yes

Master Hard Reset

1. Power Forerunner off
2. Press and hold Enter and Mode buttons
3. Press and release Power button
4. Press and release Lap/Reset (watch will power off)
5. Wait 3 seconds
6. Release Enter and Mode

Forerunner 405


Soft Reset

1. Connect device to computer using charging clip
2. Press and hold Start/Stop and Lap/Reset for 10 seconds
3. Release and wait 3 seconds for device to power on

Master reset

1. If turned off, power on Forerunner
2. Press and hold Start/Stop and Lap/Reset simultaneously
3. Press both buttons until screen goes blank
4. Release Start/Stop and continue to hold Lap/Reset
5. Release Lap/Reset when the Do you really want erase all user data? message appears
6. Select Enter (Start/Stop) to clear user data