In your email below it seemed you were trying an update from 10.0.1 to 10.5.1

If you are coming FROM 9.1.2, you may be hitting this bug

On page 3 of the 9.1.2 SU2 release notes 
 it warns of this bug. The reported work around is to go directly to 10.5.1. 

f you are suggesting that you are still receiving the unknown error when trying 
to directly upgrade 9.1.2 TO 10.5.1, then I'd go ahead and raise a TAC case. 

If this isn't a production cluster or I didn't mind taking it down, I'd reboot 
the cluster then try a 9.1.2 -> 10.5.1 upgrade and if I still got the error, 
I'd raise a TAC case.


Date: Tue, 10 Mar 2015 09:41:10 -0500
Subject: Re: [cisco-voip] Upgrade 9.1.2 to 10.0 fails...

I applied the RSA cop file... the version from is 
I have tried going to:
Same errors every time.
All of them are the non-bootable ISO.

On Tue, Mar 10, 2015 at 6:22 AM, Ryan Huff <> wrote:
Have you applied any other cop or engineering special files besides the version 
3 keys?
Is your cluster based on the unrestricted export version or the restricted 
export version? Does the update your applying match (restricted versus 
Can you list out the specific version of 10.0.1 you are using and the specific 
version version of 10.5.1 that you want to go to?
If you do a "show version active" on all the cluster nodes; what do you see? Is 
it the same on all nodes?
I assume you tried to download a new image file from CCO and use that?

-------- Original Message --------
From: Jonathan Charles <>
Sent: Tuesday, March 10, 2015 01:30 AM
To: Andrew Grech <>
Subject: Re: [cisco-voip] Upgrade 9.1.2 to 10.0 fails...
CC: Cisco VoIP Group <>

Well, that didn't work... SFTP'd the ISO to the box, same error...
Same error message...

On Mon, Mar 9, 2015 at 11:45 PM, Jonathan Charles <> wrote:
It is re-running after SFTPing from a Windows box (FreeFTPd)...

On Mon, Mar 9, 2015 at 11:31 PM, Andrew Grech <> wrote:
Hi john, I've had a ISO from Linux to prime with bad permissions and had this 
On 10/03/2015 1:13 PM, "Jonathan Charles" <> wrote:
OK, let me try via SFTP (Windows box)... see what happens...

On Mon, Mar 9, 2015 at 9:26 PM, Charles Goldsmith <> wrote:
Given that it is complaining about accessing the upgrade file, are you using 
dvd image/dvd on the host or sftp?  I'd try a different method to see.
Not a whole lot of information, but I have seen SFTP cause similar issues, I 
think it was a permissions problem on a linux setup using openssh.
On Mon, Mar 9, 2015 at 8:16 PM, Jonathan Charles <> wrote:
Getting error: 
        Error encountered: An unknown error occurred while accessing the 
upgrade file. Warning: A system reboot is required when the upgrade process 
completes or is canceled. This will ensure services affected by the upgrade 
process are functioning properly.
Tried upgrade from to 10.0.1 and 10.5.1, same errors...
I have applied the ciscocm.version3-keys.cop.sgn patch, no change in behavior...

Any ideas?



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