User manual
Table Of Contents
- KH1508Ai / KH1516Ai User Manual
- Introduction
- Hardware Setup
- Basic Operation
- OSD Operation
- OSD Overview
- OSD Navigation
- OSD Main Screen Headings
- OSD Functions
- Hotkey Port Control
- Invoking Hotkey Mode
- Selecting the Active Port
- Auto Scan Mode Switching
- Skip Mode Switching
- Computer Keyboard / Mouse Reset
- Setting the Hotkey Beeper ON/OFF
- Setting the Hotkey key combination
- Setting the OSD Hotkey combination
- Setting the Port Operating System
- Restore the Default Values
- Hotkey Summary Table
- Logging In
- The User Interface
- Port Access
- User Management
- Device Management
- Log
- Maintenance
- Download
- Port Operation
- The Log Server
- Appendix

Chapter 11. Maintenance
139
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 8).
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.
Adapter Firmware Upgrade Recovery
Should the adapter firmware upgrade procedure fail for one of the KVM
Adapter Cables and the adapter becomes unusable, the following adapter
firmware upgrade recovery procedure will resolve the problem:
1. Unplug the Adapter from the server it is connected to.
2. Slide its Firmware Upgrade Recovery Switch (located next to the Cat 5e
connector) to the RECOVER position.
3. Plug the Adapter back into the server.
4. Repeat the Adapter upgrade procedure.
5. After the Adapter has been successfully upgraded, unplug the Adapter
from the server it is connected to; slide the Firmware Upgrade Recovery
Switch back to the NORMAL position; and plug the Adapter back in.