166 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix D          Use ControlFLASH to Upgrade Your Operating System
6. The AB_SNMP – BOOTP Server dialog box displays, indicating that this 
IP address has not been configured into the processor.
7. Enter the hardware address of the controller that is being upgraded (as 
noted in step 2
 of Prepare the Controller for Firmware Update on 
page 163) and click OK.
For the IP address to be configured using the ControlFLASH BOOTP 
server, enable the BOOTP settings in the controller, see step 2
 of Prepare 
the Controller for Firmware Update on page 163. 
8. The AB_SNMP – BOOTP Server Running dialog box may take several 
seconds or minutes to appear. 
You may need to wait several seconds before you are returned to the 
AB_SNMP.DLL – Enter IP Address dialog box. Within several seconds, 
the Device Identification box displays the processor's current revision 
information.
9. Click OK.