Firepower Failed to install pre-install 6.0.0

[Ariel.heredia]

Hello Community, 

I'm Having a really weird problem. Trying to install the pre-install 6.0.0 package on the Management center, I got the message:

"Update Installation Failed : [%] Fatal error: Update to version 5.4.1.5 is not complete. Please complete update to 5.4.1.5"

Our Firepower is in version 5.4.1.5 already, so I relly don't know what is happening, 

Any help would be appreciated.

Thanks guys.

[Marvin Rhoads]

There is most likely corruption of the file / database flag that indicates the earlier upgrade was completed successfully.

For cases like this, it's strongly recommended to contact the TAC. Manipulation of the underlying file system can result in an unusable system if not done exactly right.