Originally Posted by fanoush

Yes, but not via flasher. You need to use mtd-utils. I did it few times. There is no simple way but you can use tools from initfs flasher. This is what I do:

When I like current stable system in flash (after clean reflashing and tweaking it a bit) I boot from mmc and do a backup

Code:

mount -t jffs2 /dev/mtdblock4 /opt
./mkfs.jffs2 -r /opt -o /media/mmc1/rootfs.jffs2 -e 128 -l -n
umount /opt

There is also optional sumtool command that optimizes the image a bit for faster mounting.

Code:

sumtool -i rootfs.jffs2 -o rootfs.faster.jffs2  -e 128KiB -l -n