Delete backup image from 9120 AP - verify signature failed error

[Sam Caprio]

Hello Everyone,

After upgrading the WLC to version 17.9, one of the APs is experiencing an "image signature failed" error. The error message is:

[*01/01/1970 00:00:25.9340] verify signature failed for /bootpart/part2/ramfs_data_cisco.cpio.lzma

I would like to delete this image from the AP so that it can redownload the correct image from the controller. Currently, I have set it as a backup image after removing its connection to the WLC.

Could someone please share the command to delete this backup image?

[marce1000]

      - Read from : https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/220443-how-to-avoid-boot-loop-due-to-corrupted.html#toc-hId-2093618508

 M.

[Flavio Miranda]

@Sam Caprio 

 Which AP model is It?

[marce1000]

 - @Flavio Miranda (wrote) :  Which AP model is It?
                                       It's in the subject of the post

 M.

[Leo Laohoo]

This is a very well-known bug:  CSCvx32806

FN74109 - Access Point Image Corruption During CAPWAP Upgrade May Result in Boot Failure

[srimal99]

BUGS listed  Catalyst Access Points, Cisco IOS XE Cupertino 17.9.x

https://www.cisco.com/c/en/us/td/docs/wireless/controller/ewc/17-9/rel-notes/ewc-rn-17-9-x.html