SysCheck does several checks on installed IOS and cIOS.

Checks:

– IOS Stub;
– Fake signature (aka Trucha Bug);
– ES_DiVerify (aka ES_Identify);
– Flash Access;
– NAND Access;
– Boot2 Access;
– USB 2.0.

sysCheck generates a report on the root of the SD card (sd:/sysCheck.csv).

http://wiibrew.org/wiki/SysCheck