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  4. DME downgrade protection F87 2019 with mevd172g
jaramillo
2020-08-25T17:39:55Z
Hello as tittle says, F87 was updated at dealer with 20-07 datens, so is not possible to use Bootmod3 to tune.
MEVD172G
Its possible to downgrade the DME reseting working hours?
Or should I use a different aproach?
Thanks in advance
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Admin
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2020-08-25T22:00:32Z
To reset working you can use ISN factory mode function, no need to downgrade
jaramillo
2020-08-25T23:25:58Z
Thanks for your answer, but I need to downgrade the DME, so thats not going to work
Is there a way to downgrade that bootloader using autohex?

Thanks n advance
abc123
  •  abc123
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2020-08-26T04:02:22Z
I'm not sure but think AH can only update UP, cannot flash earlier file.
Autohex_II_BMW
2020-08-26T06:18:11Z
autohex cannot return the flash to previous version for dme, only can flash to latest versions
e46M3dave
2020-08-27T12:06:04Z
Originally Posted by: jaramillo 

Hello as tittle says, F87 was updated at dealer with 20-07 datens, so is not possible to use Bootmod3 to tune.
MEVD172G
Its possible to downgrade the DME reseting working hours?
Or should I use a different aproach?
Thanks in advance



You can downgrade using BMW ESYS Engineering software to downgrade the I-level. But to tune this ECU with updated I-level you can get from many tuners without BootMod3.
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  1. Microtronik Autohex II and Hexprog forum
  2. Autohex II BMW
  3. Autohex II DME/DDE and CAS ISN
  4. DME downgrade protection F87 2019 with mevd172g