While original CDecrypt required a separate ticket.bin in the folder, version 2.0 can extract the ticket directly from the title.tmd – title.tik pair. It also supports using an external keys.txt file or compiled-in common key, making cross-platform usage easier.
The problem? If you lost your console’s OTP, or if you were trying to decrypt a backup from a different console, you were out of luck. This fragmentation led to the development of . cdecrypt 2.0