Does MHD write to program area?

[fstbtstr]

Does MHD write changes to the program area? I.e., if I make some changes to some actual control routines and not just maps, will my bin with those changes get written completely or it will write only the maps? I'm specifically talking about N55e MHD.

 

[carabuser]

MHD only allows modifications to the calibration area. It's a safety to prevent people accidentally bricking their DME by corrupting the program.

 

[Itspeat]

I'd imagine that if you are using MHD+ functionality, it writes to the program space in memory as it is adding new features and probably changing some DME control routines in itself. Can't imagine how else they'd tap into the CANBUS, provide anti-lag, on the fly map switching, etc without doing that... but I could be wrong.

What are you trying to write yourself? Sounds interesting.