Chapter 10. Maintenance
Firmware Upgrade Recovery
Should the switch’s main firmware upgrade procedure fail, and the switch becomes unusable, the following firmware upgrade recovery procedure will resolve the problem:
1.Power off the switch.
2.Press and hold the Reset Switch in (see Reset Switch, page 10).
3.While holding the Reset Switch in, power the switch back on.
This causes the switch to use the original factory installed main firmware version. Once the switch is operational, you can try upgrading the main firmware again.
186