• My device wont start up
• White screen
• Black screen
• Description
• H2+ (and H1) not powering up, just black LCD (after flashing new Mayhem FW, and it is ignoring previous above key buttons init description):
• (1) If your device is still detecting correctly the USB plug to your USB PC
• (2) If you have an H1 device (without integrated battery) that does not detect any USB communication
• (3) If you have an H2+ (with integrated battery) device that does not detect any USB communication,
• Special Step process (I) to recover it (usually only needs to be done just once)
• Explanation
• Additional notes :
• H4 users