Upgrade CUCM steps from 6.1(2) to 6.1(3)

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Aug 21st, 2009
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Hi, this is my first post.

my question is, whish are the steps for a success CUCM upgrade.

the actual version is, and i want to upgrade to the version.

i have a Cluster, Publisher and Subscriber

i downloaded the version and burn into a DVD.

what's next?

thanks for your help

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Overall Rating: 5 (1 ratings)
Jaime Valencia Fri, 08/21/2009 - 09:48
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Table 7 Supported Cisco Unified Communications Manager Upgrades for Releases 6.1(2x) through 6.1(3x)


Software Upgrade and Installation




if this helps, please rate

agustin.varela@... Fri, 08/21/2009 - 10:19
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Great, thank's a lot.

now, i do that in lab. but an error appears.

attach the picture.

in that case i tried to upgrade from 6.1(2) to 6.1(4).

but this error, i don know what happend.

i download the image 3 times, and copy 3 times in difference DVD burners


agustin.varela@... Wed, 08/26/2009 - 06:03
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hi, plz. i dont understand the error:

"Error encountered: An Unknown error occurred while accessing the upgrade File"


Jaime Valencia Wed, 08/26/2009 - 06:13
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make sure MD5 is correct, otherwise you might need to look at logs



if this helps, please rate

guilhem.perez Thu, 11/05/2009 - 01:49
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my customer encounter the same issue:

6.1(2) to 6.1(3)and

6.1(2) to 6.1(4)too.

Did you solved your issue?

Thank you

Best regards

leightonfehr Thu, 11/26/2009 - 08:41
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I have having the same error on an upgrade from to

I am upgrading immediately after a fresh installation.  I have not started any services yet, could that be my problem?

I idd not choose to upgrade as part of the installation, instead I am using the Cisco Unified Operating System Administration to do the upgrade.

I am using OpenSSH as an SFTP server on a Windows machine.  The file downloads fine, and produces this error after about 30 minutes into the upgrade process "Error encountered: An unknown error occurred while accessing the upgrade file."

The MD5 check on the combined ISO file is good.

Any suggestions?


ogmez Tue, 09/10/2013 - 07:37
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I have the same problem in my CUCM 6.1.2 ....(source version is ..),

and i need to upgrade to 6.1.4 but, i get the same error:

.....Error encountered: An unknown error occurred while accesing the upgrade file.

who solve it yet ????

any suggestion please y reale want to upgrade to this version

ill be trying :



but nothing , i get the same error

i hope any one can answer me.



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