I have a WLC4404 that was shipped with 18.104.22.168 version
So of course I decided to go for 4.1 version.
I read the release notes and I did the interim upgrade as mentionned to 4.0.206
The TFTP transfer concluded successfully, and the WLC proposed me to save and reboot.
Since the reboot, the console does not answer anymore, and no traffic at all on network ports... :-(
Please help for recovering to an new image.
Nothing appears on the console, so meaning I even cannot access the initial boot menu via the ESC key ! :-(