The difference between serial and bdm

[obd75]

I believe you can also read the flash in the bdm and rewrite, then a second time with the serial.
For example, reading bdm (only flash) write gallo serial.

on this hypothesis, I would appreciate a confirmation,I always read the ecu in the bdm and the first change I make in the bdm but I never wanted to reprogram the file bdm in the obd...

[sportknight]

it works,not all-but it works

[msport (exil77grande)]

then there are units that can be read in bdm others that do not have the plots for the bdm and you have to unsolder,reading with the bdm as I have said read the whole backup of the control unit, then whatever you do, you can restore the situation,you board in the control units and more particularly such as bmw always do a backup before the scriptures, the serial if you're not equipped or prepared in the field in order to avoid spending 1500? for a new ecu in the bmw,for the rest of the flash read in bdm, you can almost always write in the serial and you can try making the experience so much, as I said, once you have done the backup, you can always go back while vice versa is not you can do that if not in rare cases, so I would say not to try your luck.