Well not sure what I can say and cant say but here goes. Got my 016c block and split the 96 bytes into 12 blocks of 8 (assuming ive got the right ones) applied the idea key. Then xor'd the results with the originals(new 12 with old 11, new 11 with old 10 etc etc..) my end result wasnt what I expected. Feeling like ive missed something.
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well your part right and part wrong
your block start with 016c (364) which is the size of the block that needs decrypting.what happens in the stb is the cak (find carpairn) asks for the block and checks size then decrypts it yes in blocks of eight using your IRD it takes from block and the idea key +twist pre-stored in cak the constant that your posting beginning with 10 is not the idea key used to decrypt the block