I've got a problem with the upgrade procedure for a Cisco 4402 WLAN controller. I want to install new firmware on the controller, but the TFTP upload is not successfull.
The new image is 37 MB. I've got a TFTP server that supports these large files. I've got threee WLC's and the problem is the same on every controller:
After a few bytes, the controller stops the download.. "Image not complete". Upgrade not successfull.
What is the problem ? Via CLI the same problem.
Can you confirm which code your controller is running currently and which code you are trying to upgrade?
Also can you try upgrading using tftp server which is tftpd32.