The new supposed new maps going out on the internet is halo 3 maps with a xex that erase the nand. 9/10 people are getting screwed as they dont have a usb/ltp flashing tool.
I'd say that ratio is a lot lower. ALL of the people I have who have a kit have multiple dumps of their nand and most of them have built a JTAG and have their own usb/lpt flashing tool. Anyways, you can always just buy or make a nand flasher or an lpt cable.
