Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual - Manual (Page 218)

178 Rockwell Automation Publication 1766-UM001H-EN-P - May 2014
Appendix D Using ControlFLASH to Upgrade Your Operating System
The Update Status dialog box is displayed. If the update was successful, the
status text box is green and has an appropriate message.
If the update was not successful, the status text box is red and has an
appropriate message.
If the following dialog box appears, it indicates that the controller ended
up in a Missing/Corrupt OS state. The current revision number reflects
the version of Boot Firmware.
To recover the controller from this state, see
Recovering from Missing or
Corrupt OS State on page 182 .