M3i Zero upgrade Manual is Released with many pictures & pdf file.

PRLog (Press Release) - Jul 27, 2009 -
This manual contains detailed upgrade process of m3i zero, step by step, with many pictures. You can follow it step by step to upgrade your M3i zero easily and safely.

By the way, here are what m3i zero contains,

1, 1 x M3i Zero Modchip
2, 1 x MicroSD Card Reader by M3
3, 1 x Flashing connector.

You can download the m3i zero upgrade manual in the following links:

Address 1 from the Dwtechz.com,
M3i Zero Upgrade Process User Manual
http://www.dwtechz.com/manual/dwtechz-m3i-zero-upgrade-manual.pdf

Address 2 from the Depot4u.com,
M3i Zero Upgrade Process User Manual
http://www.depot4u.com/images/NDSi/depot4u-m3i-zero-upgrade-manual.pdf

You can also find more info about the m3i here,

wholesale m3i zero
http://www.dwtechz.com/m3i-zero-sakura-for-ds-dsl-dsi-flash-card_p17145.html

M3i zero wholesale
http://www.depot4u.com/m3i-zero-Sakura-for-DS-DSl-and-DSi.html