Project fifteen

This is, my first post So I will break the ice on a notorious issue of codeing the suspension module 4BO 907 553 it is not the normal allroad module. But it will only lift 2rear air bags fitted to an Audi A6 C5 4.2 quttro avant.. When I code in modules 34, Log in then 31564, the Basic settings (channel 00 I read test then save, channel 01 read comes as stored 0, new values 1,test and save, this is were channel 3,4 are all coming as errors the car won't lift at all I can't even put 402 in new value in channel 01 as it says error,, I have seen alot of topics of the for 402 mod but It goes past channel 00 test and save OK then for channels 01 can't put anything in without it being error!
Can anyone help as the module that everyone has is for 4 airbags and mine is for 2 also what channels are they (3,4) because what am I getting on channels 01 as I don't have airbags in the front,,,