[oclug] CIM file format.
rod at giffinscientific.com
Wed Jul 23 15:53:19 EDT 2003
On Wed, 2003-07-23 at 14:26, Ross Jordan wrote:
> I've been doing some work reverse engineering some Linux based
> access points, and I'm wondering if anyone has heard of .cim files.
> (The firmware for one particular AP is distributed in a file
> called Model_Firmware_version.cim)
> I am presuming it is some type of compressed image. They are
> not cramfs as many of the other linux access points are. Strings
> doesn't show anything useful. Attempting to uncompress (using
> unzip, gunzip, bunzip2, ar, uncompress and others) doesn't seem
> to work. Running the file command only gives data:
> # file CN3000_Firmware_v.1.21.cim
> CN3000_Firmware_v.1.21.cim: data
This is most likely the firmware file for a Colubris Networks CN3000
Public Access controller (The 100 user one.). There should be a PDF file
as well that contains some useful(less) information - if not, go to
If the idea is you want to know the format of the file, you could
contact Colubris support and ask them, but I'm not entirely sure they'd
answer. If it is czip, there might be some utilities that can handle
it, I know there are for Windows and MacOS.
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