Note: With the new firmware 2.0, we have optimized the LED indications on the board, with the following meanings: 
•  When the board is powered on, the software performs a general functional check, flashing as follows: 3 red blinks followed by 2 blue blinks. The board is functioning perfectly. 
•  After the initial check blinks, the board will display 1, 2, or 3 blinks depending on the battery charge level: 
-  3 blinks: battery between 75% and 100% 
-  2 blinks: battery between 25% and 50% 
-  1 blink: battery between 0% and 25% 
The error codes from previous firmware versions remain unchanged and, if applicable, are displayed after the first blue blink during the initial functional check procedure.