@Alb, there is no need for experimenting with RUNME scripts:
- install (and then enable) USB networking,
- connect to KT with SSH client (Putty or something),
- issue
Code:
dd if=/dev/mmcblk0p1 of=/mnt/us/p1.img
- wait some minutes (it's safe to interrupt this process in any time, but you'll get an incomplete image, so be really patient).