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I tried to update my WLC 4402 from 184.108.40.206 to 220.127.116.11 and ran in to some trouble, this is
what I did:
1. Took backup of WLC (Commands -> Upload files -> uploaded config to a server)
2. Shut down WLANS
3. Downloaded AIR-WLC4400-K9-5-0-148-0.aes
4. Downloaded AIR-WLC4400-K9-5-0-148-0-ER.aes
5. Rebooted WLC
6. Downloaded config
7. After download of config the WLC automatically reset.
After this I couldn't access my WLC other than through the console. All settings were gone and
after fiddeling around for a while I realized that I could switch which image the WLC should boot
from, it looked like this:
1. 18.104.22.168 (active)
I booted from image number 2 and restored my config, that worked fine, now my WLC is running again.
I set second image as active so it should automatically boot from that image if I reboot the WLC.
So now the boot list look like this:
2. 22.214.171.124 (active)
My questions are:
If I would try updating again, from 126.96.36.199, would 188.8.131.52 be kept as the backup image again, so I
can restore if it doesn't work ? ie, would my boot list look like this:
Does anyone know what might have gone wrong ? I have a fealing that it's when I download the config
file that screws up the 184.108.40.206, could this be it ?
You are correct. All code before 4.2 uses binary configuration files, and code after 4.2 uses XML configuration files.
So, the WLC was expecting an XML file, but you uploaded a binary file, which resulted in the default settings.
So if I updata again, will 220.127.116.11 still be kept as backup image ? (see my first post)