QUOTE(ff7cstrife @ Oct 19 2010, 05:57 AM)
also, where exactly is the xbox dash data stored?
The core dashboard is stored in the NAND. The extra features like avatars and kinect features are stored on your harddrive in the $systemupdate folder.
QUOTE(ff7cstrife @ Oct 19 2010, 05:57 AM)
If it resides solely in the NAND chip, is it also possible to grab the chip (and only the chip) and re-write a new nand to it? say, one with 7371 dash, or even the old blade style? these are the things i think about at night
You can only rewrite a new dash if the box is jtag exploitable. After the 7371 dashboard, the burned efuses will not allow dashboard manipulation.
QUOTE(ff7cstrife @ Oct 19 2010, 05:57 AM)
Is it possible to take the banned CPU of, say, an 8955 and place it into a jtagged 7371 and change the CPU key to that of an unbanned console, then placing it back into the 8955's original mobo thus making it unbanned?
A cpu on a board that has dash 8955 means the efuse are burnt and the jtag exploit if no longer possible. Moving it to another board would cause multiple problems.
1. It would not boot because the CPU you removed would not match the cpu key of the jtag box.
2. Even if you magically had the CPU key and was able to somehow create a working KV to inject into the jtag'd nand, the box still wouldn't boot because the CPU efuses are burned!
QUOTE(ff7cstrife @ Oct 19 2010, 05:57 AM)
another thing, eFuses are in the CPU, correct? would replacing the CPU with a diff one re-enable jtagging, and if not, what will?? I'm talking about going balls out and not doing the cheapest method, but taking price and materials out of the way.
In theory I imagine if you have the proper equipment and the skills to successfully reball, then technically speaking, you could take a broken exploitable box, remove the CPU, dump the nand chip, reball, move the cpu to another working motherboard of the same type, and replace the nand information. This may make the working board jtaggable, but I'm not 100% sure if other things have to match (IE: Mac address of the ethernet chip?). You make have to swap other chips as well.