I asked around...and we weren't exactly sure about what you were attempting to accomplish. However a colleague recommended that you check out this info and see if it helps:
Best of luck,
Thanks Ann for the answer.
If i do good summary of the document, your answer is about how to copy the ips image from a tftp server into the IPS (TFTP ---> IPS)
My question was about the inverse operation. Meaning exporting the image already in the ips to a tftp server for example. (IPS -----> TFTP)
I would start thinking where is the path the image is inside the appliance, so i can execute the "copy system_images/IPS-4270_20-K9-sys-1.1-a-7.0-4-E4.img tftp://10.0.0.1/IPS-4270_20-K9-sys-1.1-a-7.0-4-E4.img" command and see if is allowed.
Start to experiment, besides that command doesn't have any negative impact in your device. I said "appliance", but is a router/ASA module?
I don't think that you can pull an an image from IPS. At least that's my understanding. I would recommend, unless you have a good reason not to, just find out your version (show version | i Ver) and download the image from cisco.com for safe keeping.
Probably would save you a lot of headache with trying to figure out how to export the image from the IPS.