The upgrade for the 5520 HA set up from 8.2 to 8.3 completed. However, the bootloader shows different versions.
Attempted the upgrade from 8.3 to 8.5 . It failed during the upload of IOS file to the WLC.
Is the bootloader has something to do with this or a bug issue for the current 8.3 version ?
- Do you have a screenshot or can you provide logs from the failing sequence ?
i think its failed due to wrong FTP config.
Please chekc the bug:
Dont forget to arte helpful posts
This has been solved.
When you issue the show certificate command . It shows no certificate.
I contacted TAC and they have make me reseated the SD card. Certificate then shows Then I had proceeded the upgrade.