I reckon as I said before the long string got messed up which is why Agnes had the problems. The messing up was either in the
dealership,
OBDELEVEN or by the user. I hadn't thrown the
dealership into the mix before. That's why you always need to take a backup before you change anything when you first get the device. Whilst the "history" shows you what you changed in the part of the long string, if the long string gets corrupted in a different part and is outside of the
Obdeleven changes you won't see it.
The "history" shown in
Obdeleven is what you did with
Obdeleven not changes external, that's my understanding. The long string is the program for the control unit. Each control unit has it's program and that's the long string. It's a distributed control system. Each control unit has its own "firmware", the release that it is on is also shown in the
Obdeleven screens.
Dealers also change the firmware of those control units when they do "programming".
In the past it has been known that
Obdeleven has corrupted long strings. They probably have a process to correct that now without the user knowing.
Obdeleven is a front end tool back to their servers.
The backup you mail to yourself, it's how
Obdeleven works. Restoring the backup isn't like a computer restore it's a manual process. Obvious if the
dealership did some programming work then your backup would be at variance with the car.
That's why I suggested Agnes got hold of somebody else's Admap as they are called since I don't reckon she had taken a backup. Saying this if dealerships are changing
coding using the historic backup would reset the changes.
Admaps are also handy where you are trying to enable functions that one car has but yours doesn't. You pass the long string and with a bit of computer science skills decode that into a mod. How I got the Cupra flash screen on my mib2 high by taking a Cupra
Ateca's infotainment long string and working out the unpublished parts on boards. I reverted it back so as not to excite a standard Seat
dealership. Pretty screen thou ?. Did that to resolve an issue that someone was having on a Cupra
Ateca.