Forerunner 245 frozen - after restart it stays on the triangle

Hi everyone, 

I had the same problem this morning and I discovered a solution on an old post: 

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-935/148870/935-blocked-after-only-3-months

I will copy paste it here for visibility (hope that's not a problem, the source is the link above): 

            Solution 1:

• a. Hold POWER BUTTON on for 15 seconds. The device should hopefully start to turn off.
  b. Press and hold UP ARROW BUTTON and DOWN ARROW BUTTON
  c. Press but don’t hold the POWER BUTTON for a second or so – device should turn on
  d. Wait for 1st beep then release UP ARROW BUTTON
  e. Wait for 2nd beep then release DOWN ARROW BUTTON
  

  Solution 2 ( THIS WORKED FOR MY FR245 watch ):
• Try to do a hard reset with the button of your watch
  It is something like:
  - Power off your watch (Hold "light" button between 15-20 sec)
  - While holding "start" & "back" button, hold few sec "light" (to power on the device)
  - Release "start" button after the first beep and the back button with the next beep
  
  (for me it was not working with the "up" & "down" arrow button, but ok with the "start-stop" button)

  Hope that this will help you all! Good luck and wishing you a loveley day!