[cisco-voip] CUCM 6.1 - Downgrade Firmware for 7921

[Tim Smith]

Hi Guys,

Just FYI..

Downgrade to 1.1(1) fixed it.
So I tried an upgrade to 1.3(1) and the problem disappeared as well.
So problem was only there on 1.2(1) firmware.

Cheers,

Tim.

On Mon, Aug 10, 2009 at 9:27 PM, Tim Smith <thsglobal at gmail.com> wrote:

> Hi Guys,
>
> Is it possible to downgrade phone firmware on CUCM 6.1(4)?
>
> The load I want to downgrade to is 1.1(1) - it is not on the CUCM already,
> so I have to copy it on.
>
> Am I able to just upload the file via the TFTP management in OS admin? Or
> do I have to run it through the software upgrade?
>
> If I run the install, will it leave my newer version of firmware in tact so
> I can set the default to the newest load, and manually change 1 phone to the
> old load to test it?
>
> Actual problem I am having is wireless drop outs, it seems like a voice gap
> while roaming. There is a bit of info around on netpro regarding this.
> Reason I want to downgrade is that this wasnt happening when the site was
> CME and running load 1.1(1).
> It has now been converted to CCM and is running 1.2 and has this voice gap
> issue.
>
> Cheers,
>
> Tim
>
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