Found some older posts that might help out...
- dfu-utils backup edison will send you to the next link...
One thing that jumped out from the dd solution from Intel_Alvardo:
Using the dd command you can backup to a USB drive and restore from the USB drive as long as the root password was not set.
edit: you know what, this seems to be the latest link from one of those threads - Cloning Edisons by making a flashable image from an existing Edison · GitHub
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