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GialloEvo94 · 18-06-2008

Very useful information and some impressive decoding analysis that you've done. Thanks for sharing it.

However, as always I have a couple of questions:-

The receiver can remember a maximum of five remote control codes. If the remembered codes start at block 04 and take up 4-bytes each then this will take up blocks 04 to 17 inclusive for five complete codes. If the "ROLLING CODE ORIGINAL" data starts at block 24 then do you know what bytes 18 to 23 are used for, or are they just unused bytes? (those bytes are all set to "FF" in your example)
What do you mean by the terminology "ROLLING CODE ORIGINAL" and "ROLLING CODE PRESENT"?
Given the stored hex code of a remembered key (i.e. "A7 37 D0 AE" starting at block 04), is it possible to determine the actual 4-digit password code for that key (i.e. the code needed to unlock the receiver using the button on the bottom of it)?

18-06-2008	#43 (Post Link)
GialloEvo94 AO Member Join Date: Jul 2005 Location: South Oxfordshire, UK Posts: 485 Member car: 145 QV, integrale Evo	Re: key code Very useful information and some impressive decoding analysis that you've done. Thanks for sharing it. However, as always I have a couple of questions:- The receiver can remember a maximum of five remote control codes. If the remembered codes start at block 04 and take up 4-bytes each then this will take up blocks 04 to 17 inclusive for five complete codes. If the "ROLLING CODE ORIGINAL" data starts at block 24 then do you know what bytes 18 to 23 are used for, or are they just unused bytes? (those bytes are all set to "FF" in your example) What do you mean by the terminology "ROLLING CODE ORIGINAL" and "ROLLING CODE PRESENT"? Given the stored hex code of a remembered key (i.e. "A7 37 D0 AE" starting at block 04), is it possible to determine the actual 4-digit password code for that key (i.e. the code needed to unlock the receiver using the button on the bottom of it)?