1. After 5 unsuccessful attempts, tap OK.
   
2. To access the device using a backup PIN, tap Backup PIN.
   
3. Wait for the countdown to end, then tap the PIN field.
   
4. Enter the backup PIN, then tap Done.
   
5. To access the device using the associated Google account, tap Forgot pattern?.
   
6. Enter the account information, then tap Sign in.
   
7. After unlocking the device, tap to select the desired new security setting.