Next step – firmware. I found information that changing firmware in steering racks/column are quite common. I found FRF file in web (FL-6R1909144AJ-3132.FRF) and just for fun now (but potential in future) want to check if its possible to change characteristic of steering. First problem is that VAGHelper can open only SGO file (if I’m right?), second is that this soft can’t edit characteristic. Only shows curves. I checked it with internal data for other cars. What I can do in this case?
Start working on the control unit to obtain a full memory dump.
The data in the FRF is encrypted. The encryption algorithm is specific to each control unit.
Furthermore, usually automotive controllers have the data in them signed.
So you will need a working exploit to get unsigned data into the control unit.
After that you need to either manage to buy OEM data or you need to reverse the algorithms in it to understand how it works.
So you see, the cost of this is somewhere between 6 and 7 digits of $ currency.
You're not going to do it, if you need to ask.
As for running the rack in a different car - the method you described can be applied.
Maybe it'll even provide power assist without any CAN whatsoever, just not variable, only way to find out is test.
