[Asterisk-Users] Cisco 7960 firmware upgrade promblems

[Geoff Manning]

Sergio Chersovani wrote:
>> 
> I know it's hard to find out infos at the cisco site.
> Maybe you can open a TAC case
> 
> Sergio

I did find this info:

http://www.voip-info.org/tiki-index.php?page=Asterisk%20phone%20cisco%2079xx
&comments_threshold=0&comments_offset=0&comments_sort_mode=commentDate_desc&
comments_maxComments=10&comments_parentId=353#threadId358

<snip>
The two phones I purchased had "Application Load ID (AKA: firmware) of
"P003AM30". This is their "skinny" protocol load. If you're trying to do
sIP, you need a load that starts out "POS.....". You can not upgrade from
"P00...." to "P0S....", you need to downgrade to "P0S30203" to get it using
"POS...." firmware, then you can upgrade to the newer releases of the SIP
firmware, with one extra thing to know.

You do not need to step through every version of he firmware, you can jump
versions of firmware, but what you encouter is the issue with their "signed
binaries" (ie: "*.sbn" files) that they have converted to.

If you have both a "*.bin" and a "*.sbn" file in the TFTP server root
directory, it will default to loading the "*.bin" (ie: unsigned binary),
which you do not want to do, since you need to convert over to signed
binaries, in order to continue upgrading to get to the higher versions which
only come signed. If you try to load higher version binaries that are not
signed, the phone will fail to load and give an error as such (which I dont
have the exact verbiage of).

So, bottomline, go down to SIP 2.3, then go up to the first signed binary,
then go to the final signed binary, then you ought to be there.
</snip>