It corresponds to DakeJacket, IchigonQuest / IchigoJam / IchigoLatte (OS).
Please download and install it on your existing IchigoDake.
The normal version OS can be downloaded from each official site below.
Because it was optimized for DakeJacket, there are some functions which can not be used in each OS.
What is DakeJacket?
It is a dock station for IchigoDake which made it possible to overlay IchigoJam compatible expansion board.