I've done all the steps previously mentioned on other threads. Nothing has helped. Still have the SD CRITICAL ERROR and awful network connectivity with downloading ASAM data each time. Half the time it won't work. Can you send me a new one?
I had the same problem. I probed this workaround http://forums.ross-tech.com/showthread.php?3822-SD-Critical-Error!&highlight=critical+error without solution.
I have pressed and hold the reset button without power source, then y connected the usb port to my laptop and i waited about one minute, then release the button, green led blinking, disconnected the usb and connect again. The "SD Critical Error!" is gone!!!
I hope that it help you.