Assuming that I can get in to the old machine with ssh, and can allocate a scratch (OK to wipe whatever's there) SD card, and have a Windows machine available with Nokia's flasher, can you give me a recipe for the simplest way to make an image of the old one, and flash the new one with that image? I'm busy enough at work that I won't have a change to allocate time to figure it myself out (even with the excellent hints you've offered) for a few months. Thanks.
mount -t jffs2 /dev/mtdblock4 /opt cd /home/user/bin ./initfs_flasher/mkfs.jffs2 -r /opt -o /media/mmc1/rootfs.jffs2 -e 128 -l -n umount /opt ./initfs_flasher/sumtool -i /media/mmc1/rootfs.jffs2 -o /media/mmc1/rootfs.faster.jffs2 -e 128KiB -l -n
cd /home/user/bin ./initfs_flasher/flash_eraseall -j /dev/mtd4 ./initfs_flasher/nandwrite -a -p /dev/mtd4 /media/mmc1/rootfs.faster.jffs2