7940 firmware 8.0(7) to 8.1(2) CM4.2SR3 to 7.1(3)

Unanswered Question
May 12th, 2010
User Badges:

We are upgrading from CM4.2SR3 to 7.1(3)

We have moved some test phones from the existing CM to the new CM and they have seemed to upgrade fine.

The release notes for 7940 8.1(2) firmware says that you can't upgrade directly to 8.1(2) from a release previous to 8.0(10).

TAC said that 8.0(7) was a higher release that 8.0(10) but 8.0(10) was released after 8.0(7)

We have 500 7940G phones.

The questions:    Should I be worried?    

Am I reading the release note wrong?

Is it because we are changing Call Manager?

I see the loader updated first then the application.


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
paolo bevilacqua Wed, 05/12/2010 - 06:40
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

I have not see the RN you mentioned, indeed that is correct in my experience.

You should have a word with the manager of the TAC representive that claimed 8.0(10) predates 8.0(7).

Rob Huffman Wed, 05/12/2010 - 06:45
User Badges:
  • Super Red, 40000 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 IP Telephony, Unified Communications

Hi Thomas,

I would have to disagree with TAC on this one

8.0(7) was released 15-Aug-07

8.0(10) was released 21-Oct-08

8.1(1) was released 9-Feb-09

And here is the clip;

You cannot upgrade to firmware release 8.1(2)  directly from firmware release 8.0(10) or an earlier release. You have  to upgrade to firmware release 8.1(1) first, then upgrade from release  8.1(1) to release 8.1(2).

I would definitely upgrade the phones (via two-hop method) to 8.1(2) prior to your

CUCM 7.1(3) migration. You'll be happy you did



paolo bevilacqua Wed, 05/12/2010 - 06:52
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

What I've found, is that actually you can upgrade from 8.0(10) to 8.1(1), but not from an earlier release.

In other words, you can have the intermediate step to either 8.0(10), or 8.1(1).


This Discussion