I have this box with Original image, How can i back up this ?

as title says it, i use the box with Original image and CCcam, i will like to backup the image then use it later on.

i have the box stable, and becouse it works very well i like to keep it that way, but i like to test other image to, the thing i like to do is

Backup my image so i can then test other softwares, and then i can again go back to my Original image

is there any software or tool that alowes that, i will like to make USB backup so it is easy to restare it again.

Thank you Ferret, well then im giving up
Yes i install everything with telnet that i need, all im trying to do is use the Original image so i allways have the lates drivers

I know Ferret, as i use that now but i will like to use Original and start learning how to do things manualy you know
is not just to use the box, but to learn and do things to with the box
anyway thank you very much for the help