To solve calender problem (can not pass 2010):

 1. Copy the files "EbootUpdate.exe" and 
    "eboot_8x4x_0921_V100b.nb0" into the CF

 2. Run "EbootUpdate.exe" on W-8x4x, select "eboot_8x4x_0921_V100b.nb0" 
    as new eboot file.

 3. Press "Update eboot from file" button.

 4. Wait the "Eboot update success!!" message pop-on