LUIS ALESSO
2017-04-08T04:20:17Z
I try to get isn of f30 n20 dme because i need to change dme but i try several times and said cannot get dme isn try to battery disconnect i do that but the same issue always
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Autohex_II_BMW
2017-04-10T23:41:50Z
Some new DMEs in F series have more security. You can save time by trying boot mode.
Justin
  •  Justin
  • 100% (Exalted)
  • Advanced Member
2017-04-11T13:18:59Z
Hi

I had the same problem, some DMEs have extra security, so you cannot read the ISN through OBD. You have to do it via boot made, that's the only way mate.

Thanks
erickdnt
2017-04-14T02:57:41Z
I have the same problems, but I insist and the memso works at the time of writing the isn also happens the same problem, Today I made one then he asks to turn off the ignition, there I disconnect there ask to call I do not care, there I I turn on the ignition seconds later and the same thing makes the reading almost always right. But try more often than an hour pulls the password. Some just via Boot mode.
Autohex_II_BMW
2017-04-20T07:08:47Z
ISN boot mode should do the job if just follow the instructions.