I did the upgrade on Cisco Aironet 1200 to c1200-rcvk9w8-tar.123-11.JX1.tar realease by tftp web interface. After that I can't access the AP again. It seems rebooting all the time. The 3 leds are blinking change order and colors until all stay green and everything starts again. I tryed to reset the AP by mode button but it doesn't work.