Preview Tool

Cisco Bug: CSCum89797 - Upgrade fail when moving from 10-2-x to 10-1-x and back to same 10-2-x

Last Modified

Feb 27, 2018

Products (1)

Known Affected Releases


Description (partial)

Upgrade failure with this upgrade path:

10-2-1-xx  ===> 10-2-1-yy
10-2-1-yy ===> downgrade back to 10-0 or 10-1

at this point the administrator changes mind and wants to go back to 10-2-1-yy

It turns out the firmware of 10-2-1-yy is not compatible with the upgrade code from 10-1 and 10-0 and the upgrade back to 10-2-1-yy will fail.

Only applies to the 2nd 10-2-1 style firmware loaded on a device,
which has downgraded to 10-0 or 10-1, and then wants to revert back to the 10-2-1 2nd load directly.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.