Today sabrax from XBoxHacker.org (linked above) has shared a video demonstrating a way to trigger 'Manufacturing Mode' using a Memory Card on unmodified Microsoft XBox 360 consoles, followed by receiving an 0x81DA07FF error.
Shortly after, rupal has posted both the extracted XEX & INI file along with a raw dump for examination by other devs.
Download: Extracted XEX & INI File / Raw Dump
To quote: "It is happening only when a (specific) memory card is inserted, on 2 different Xbox 360's, it is entering "Set Manufacturing Mode", and after some time is showing this error: 0x81DA07FF.
Here is video - for a split second there is a blink on 0:20 - 0:21.
This exact memory unit should be 100% genuine (other MU from the same batch is still working with the latest dashboard).
Tested offline, tried it also on a unbanned and banned console latest dashboard, same result, "MTE Screening Utility" and so on as in seen on the video."
More PlayStation 3 News...