Categories: Bugs, Troubleshooting

ISR4321 Software Upgrade – Signature Verification Failed

If you try to upgarde to Everest (16.6.2) you will probably hit a ROMMON bug due to the image footprint (being larger than 512MB). Specifically you will see this:

Turns out the bug is reported as CSCvg89038

If your router has a switch module installed, you might want to check out this post.

Jacob Zartmann avatar
Jacob Zartmann
Passionate Network Engineer thriving for challenges and knowledge.