Unzip a Cisco .cop file

I'm trying to install a flash image to my Cisco 7911 phone. Is there something special I have to do in order to unzip the .cop file I downloaded from Cisco?
hullc65203Asked:
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PSLmikeConnect With a Mentor Commented:
Most Cisco phone software images are available in both .cop and .zip format from CCO.
Download the zip one instead.
It just contains the image file you are looking for without the CUCM stuff.
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JonveeCommented:
Did you try from the SCE# prompt ?
Then type unzip file-name and press Enter.

Details>
http://www.cisco.com/en/US/docs/cable/serv_exch/serv_control/broadband_app/sce8000/sce8000_swcg/Utilities.html#wp1046416
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JonveeCommented:
See description under sub-heading "Moving Cisco Unified CME Files to the Router Flash">>
"Cisco VoIP Implementations":
http://www.ciscopress.com/articles/article.asp?p=1182471
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hullc65203Author Commented:
I don't have CUCM, I'm just trying to unzip the files so I can reflash this phone to attach to an Asterisk box.
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hullc65203Author Commented:
I've changed the extension to .tar.gz, then used a linux box to unzip the files, but they seem to come out with garbage. I've tried Windows machines, different flash versions, different Linux boxes. The files always come out with garbage in them.
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JonveeCommented:
Scroll to sub-heading "How to Convert a COP File" then please read on ....
What is a COP File?
http://pcsupport.about.com/od/fileextensions/f/copfile.htm
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JonveeCommented:
From the last article there's a link to this list of file converters, although some of them i.m not familiar with.   Possibly file-convert.com will do the trick>

http://pcsupport.about.com/z/js/o.htm?k=convert%20file%20to%20doc&d=Convert%20File%20to%20Doc&r=http://pcsupport.about.com/od/fileextensions/f/copfile.htm
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