05-14-2016 07:17 PM - edited 03-10-2019 01:07 PM
Hi all,
I am getting the following error when I tried to downgrade the IOS on a cat4510R+E:
Loading image !!!!!!!!!!!!!!!!!!!!!!
Checking digital signature....
Verification FAILED for bootflash:/cat4500e-universalk9.SPA.03.04.01.SG.151-2.SG1.bin, REASON: RSA signature verification failure
Any help is greatly appreciated.
Thanks!
Solved! Go to Solution.
05-14-2016 07:37 PM
signature verification failure
This error message commonly means the IOS file being used is either corrupt or was NOT downloaded completely.
My recommendation is to go back to the Cisco website and download the firmware again. Once the download is complete, check the MD5 hash value of the firmware downloaded against the MD5 hash value found in the Cisco website. Both must match.
05-16-2016 01:32 PM
Thanks for the update. Please mark this thread as "Answered".
05-14-2016 07:37 PM
signature verification failure
This error message commonly means the IOS file being used is either corrupt or was NOT downloaded completely.
My recommendation is to go back to the Cisco website and download the firmware again. Once the download is complete, check the MD5 hash value of the firmware downloaded against the MD5 hash value found in the Cisco website. Both must match.
05-16-2016 08:05 AM
Thanks for the help, your recommendation worked.
Thanks!
05-16-2016 01:32 PM
Thanks for the update. Please mark this thread as "Answered".
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