Even if this application is not dangerous, the author can not be held responsible for any damage it might cause!
sysCheck GX does several checks on installed IOS and cIOS:
IOS Stub
Fake signature (aka Trucha Bug)
ES_DiVerify (aka ES_Identify)
Flash Access
NAND Access
Boot2 Access
USB 2.0
sysCheck GX generates a report on the root of the SD card.