The firmware image became corrupted when there was an attempt to upgrade the firmware from the GUI.
These error messages during the firmware upgrade process display:
Cannot read the file on access point
The software upgrade was interrupted and was not able to be completed
File not found, server not found or invalid file format
You can use the MODE button when the access point has a corrupt firmware image. On 350 series access points, you cannot use the MODE button to reload the image file, but you can use the CLI through a Telnet or console port connection. Complete these steps in order to proceed with the Mode Button Procedure.
These are the steps for Cisco IOS reload with the MODE button:
The PC that is intended to use must be configured with a static IP address in the range of 10.0.0.2 to 10.0.0.30.
Make sure that the PC contains the access point (AP) image file in the Trivial File Transfer Protocol (TFTP) server folder and that the TFTP server is activated.
Rename the access point image file in the TFTP server folder to c1200-k9w7-tar.default.
Use a Category 5 (CAT5) Ethernet cable in order to connect the PC to the access point.
Disconnect power / hold the MODE button / reconnect power / wait 20 sec until LED light turns red and release MODE button.
After the reboot, the AP begins to load the Cisco IOS image from the TFTP server.
If this does not work, then complete this workaround solution:
Note: Make sure that the computer and the AP are in the same subnet, for example and AP in default settings has IP: 10.0.0.1, so you need to have the computer as IP 10.0.0.2, subnet mask: 255.255.255.0 and default gateway: 0.0.0.1.
Open the TFTP server and make sure that the TAR file name is shown as in the web site, because it can be renamed to Download.tar, and if that happens, it needs to be renamed. Choose TAR file and then choose Ok.
Telnet the unit, go to enable mode and enter this command:
Hi all, I must implement QoS on a 5520 WLC already working in local mode, I am new to QoS on WLC and I can't find much on the web. Any help for a usefull guide of how to configure QoS on WLC? I know differences between DSCP, ToS, CoS, and DSCP i...
Hi,I just upgraded firmware of WLC to 17.3.20200621 but after the upgrade, whenever i login to controller it shows password policy message.I tried configuring password policy by going to Configuration -> AAA -> AAA Advanced -> Password policymade...
hi everybody i have tested wired guest lan with one C9800 Foreign in the LAN and one C9800 Anchor in the DMZ.it works very well with this.but with this architecture "foreign/anchor", i must have 2 C9800 and use a DMZ. it's possible to use a gues...
Hi,Currently have a couple of C9800 controllers in a LAB environment for a POC. They both at this time connect to the same switch but on different subnet's so no firewall to consider. Each WLC can ping each other, yet I am struggling to bring up the ...