i think you need a little chip thing i had to use it for my d500 im not sure if its the same but if it is, i will unlock it for a 5er as i stil have the chip
im with edexcell aswell i think, we had the calculator and non calculator one after another, wasnt nice, skipped last lesson though just went home there was only like 20 mins left
i have a try-all rim, with your average school boy grind , im starting to get jsut past that inter point in my riding but my brake is holding me back, hope im what your looking for cheers eddie