Originally Posted by
Jerem
No ideas guys ? thanks !

Please re-try safe mode.
"Open Reventon PC interface, Press "S" button (keyboard).
The right top corner will show "Safe mode".
Connect ESC to LCD card.
Pressing the LCD card "Value" button and then connect LCD card to PC.
The LCD card will display "CONNECTING PC".
Release "Item button".
Click "Update firmware" to flash ESC firmware."