1. Reboot the switch by unplugging the power and plugging it back.
2. Try rebooting the switch with the different image:
a. Press and hold the space bar button while the switch is booting up.
b. If you enter into the BOOTSTRAP mode then it will take you to the BOOTROM interface.
b. Select the image that is currently not used type the command "boot 1" or "boot 2"
If the above steps are not successful, please contact the GTAC for immediate technical assistance.