They are Blown Efuses which let you access your nand to write new firmware.Such as Xbreeboot. . Also once you install Xbreeboot you can run unsigned xex's and let you download free dlc's and games. You can of course do tenth lobbies also.

Where do i get one? There are many trusted and verified sellers on the site that can sell one to you and have it shipped.

Do you recommend one? No if your a just gonna use it to host lobbies and think about making a profit dont. You will not get a full experience of a jtag and or the real purpose of one. YOU WILL NOT MAKE A PROFIT OFF THIS. Unless you are selling your jtag.

Prices? There are different types of jtags here are the prices of all of them...
Xenon: $130-150
Zephyr:$130-150
Falcon:$170-180
Jasper:$200
There is an opus but no one buys it.

What is the difference? Xenon and zephyr are the oldest type of jtags that came around 2005 and are known for overheating(well xenon is) but xenons take bothe types of kvs Type 1 and type2 (ill explain later).
Falcon is the 2nd generation and is known to be better than the first 2
Jaspers are the newest type and are known to have been fixed of RROD(red ring of death)

What are kvs? Kvs are files that pretty much unban your jtag and let you go online. Jtags do get consoled banned and come console banned unless you pay extra for an unbanned one. (if comes unbanned will eventually be banned in about 4-6 hours). Kvs are pricey and only last a certain time.

How much are kvs? Usually around $25-$30 shared and $60-$80 unshared no i do not sell these nor do i sell jtags.

What is the difference between shared and unshared? Unshared is your kv and your kv only so tends to last longer approximately 4-6 hours possibly longer. A shared kv is shared between 3-4 people at once so tends to lag and last only 1-3 hours.

What do you need besides a kv to go online? Your Nand dump/ Flashdmp.bin and your cpu key.

How do you get these? Ask jtag seller for cpu key and for your flashdmp.bin you will need a file called flash360. And you also need a transfer cable.

Download flash360, Drag and drop the media folder and flash360 into your hard drive. Go on jtag, play flash360 and backup your nand. Put hard drive back onto computer and it should be on there. You also need 360 flash to to extract or import kv and unban nand.

Also to run stuff on your jtag even offline you will need something called xex menu which can easily be installed onto your jtag/hard drive. O and i dont suggest buying a jtag until after the new freeboot comes out if a new one does come out which should be after black ops. I only suggest this if you plan on ever going online or plan on going online and dont know how to install the new freeboot IF one does come out.

There has been an additional development in the never-ending battle thats Microsoft trying to keep its gaming method closed to unauthorized use. Xbox-scene reports that a new hack called freeBOOT permits the Xbox 360 to upgrade for the newer kernels, but allows the choice of rebooting to an older kernel in order use the JTAG exploit and gain access towards the hardware.

A jtag is an xbox that allows run homebrew code on an Xbox 360. Exploiting this hack makes it feasible to boot a Linux kernel in about five seconds. Weve long been fans of the homebrew work done with XBMC on the original Xbox and hope that advances like this will lead to that end. We want this simply because the older hardware cannot handle high definition content at full resolution but the Xbox 360 certainly can.


Other facts:

A Jtag also comes console banned(meaning you cannot connect to Xbox Live). You can however buy a Jtag that comes unbanned(it is only unbanned for a few hours). If you get banned or it comes banned you will need a KV(Key Vault) to unban it. Another thing is that soon this month or early next month Microsoft will be coming out with a new dashboard update which will kick Jtag's offline even with a Key Vault. If you are looking to go online anytime soon, DO NOT buy one.

Key Vault:

A Keyvault is the part of an Xbox 360 that makes each console unique. It is the part of the Xbox that Microsoft uses to identify which console is connecting to their servers. There are specific details located inside the Keyvault that makes it so important, one of the main details located in the keyvault is the serial number.

The reason Keyvaults are so important to JTAG's is because you can use them to unban your console. You can swap a keyvault from another unbanned JTAG into your JTAG and then your box magically becomes a different console according to Microsoft.

When a Keyvault gets banned, it doesn't ban just the console, it bans the Keyvault, which means every console using that Keyvault becomes banned,YOU CAN NOT MAKE A KV. But you can extract one.

Where can I get a jtag?
Always look on the site before looking anywhere else. I will post legit sellers threads below.

Types of Jtags:
Xenon: 1st type of jtag(cheapest)
Zephyr:2nd type of jtag(same generation)
Falcon:3rd type of jtag(2nd generation)more updated
Jasper:4th type of jtag(3rd generation)best type but also most expensive.

DO NOT:Buy a Jtag for just mw2 lobbies.

If you need to Know if someone is scamming you PM me before you pay them.