Lets try to fix that:
1st do this:
dd if=/dev/block/mmcblk0p2 of=/sdcard/mmcblk0p2
So you backup your p2 partition.
Now flash mine, after you copy onto sdcard
dd if=/sdcard/mmcblk0p1.img of=/dev/block/mmcblk0p1
dd if=/sdcard/mmcblk0p2.img of=/dev/block/mmcblk0p2
Reason i tell you to backup yours is because mine has cyanoboot.
When you want to go back to yours reverse the flashing.
Here is the download link:
Please report if boot2sd is fixed after this.
STRICTLY FOR 16GB NOOK TABLETS