7371 or lower. if you have the blade style dashboard you are guaranteed a jtaggable box. if you have 7371 you will need to read the nand and check the CB to make sure it is exploitable. if it's a 7371 dash you can use the manufacturer's date to get an idea if it will be hackable or not (think jun 18 2009 and earlier should be) but to be sure you WILL have to read the nand and check it.
