AirCard 785S retail unlocked infinite reboot loop.

Hi i have an AirCard 785S retail unlocked and 2 weeks ago after an update it stopped working. It turned off and when i try to turn it on it starts an infinite loop. Only to the netgear screen and then restarts sometimes it goes on a black screen and the light goes to alternating blue and amber. I bought a new battery and still no changes. I tried to flash the firmware but still for nothing. Please helppp!!!!