Hi, I have some doubts I would like to clear about Trucha Signer. After you find the "common key" and insert it in the .reg file you will be able to open any .iso in Trucha Signer. In the tutorial (http://gbatemp.net/index.php?act=ST&f=108&t=76657&st=0#entry1005253) finding the "sd key", "md5 blanker" and "sd iv" are optional.. my question is, what is the relevance of finding these 3 keys? I did the drivecheck hack on the main.dol file of Super Mario Galaxy just fine with only the "common key" found in a key.bin file. So, mainly I would like to know what is the role of all these 4 keys. And the "common key" is only used to open the .iso file or it is also use to sign the partitions using the "Trucha Sign"? Or is the "Trucha Sign" not even related to these keys? Thanks in advance!