I flash with success many b3410. I have make a tuto on my website in my native lang (in french):
http://provinspc2.free.fr/flash_b3410_samsung_707.htm
The translate in english is here:
Google Traduire
If you have an error reboot on logo or with/or red numbers, flash bin+tfs
and stl+bin.
If u have pb post here.
Good luck!