This is a tool for diagnostic and reapir work on 4GB Corona NANDS. The 4GB NANDS on Corona XBOX 360 are notorious for failing, this means that you will not be able to perform updates ar save your games, this tool will allow you to replace you NAND and get the console working properly again. You will need to solder short wires to it (2-3 inches MAX) and then solder the ends to the relevant points. You then need to find a suitable card reader to plug the SD tool into, the Corona NANDs are very finicky to read and finding a card reader that sees the NAND can be hit and miss, we found that internal card readers seem to do the job best.

These involve soldering to quite small pads and for the novice are not ideal as you can end up damaging pads and traces.