can the dealer backdate DME?

GrumpyBimmerFan · 11-05-2019, 07:21 PM

as the title says...

It seems that tuners say that they will can do a bench backdate the DME to pre update, and then do the tune... can't you ask the dealer for an older version of DME tune?

Also, once the tuners backdate the DME, can you then control which tunes u use via an obd2?

Finally, since DME is locked, can you still do coding for stuff? like folding mirrors and such...

Detoxified · 11-05-2019, 09:31 PM

Quote:

Originally Posted by kotik

as the title says...

It seems that tuners say that they will can do a bench backdate the DME to pre update, and then do the tune... can't you ask the dealer for an older version of DME tune?

Also, once the tuners backdate the DME, can you then control which tunes u use via an obd2?

Finally, since DME is locked, can you still do coding for stuff? like folding mirrors and such...

Coding stuff is separate. I bought my car last week of June with the newest DME and BimmerCode app still works. I highly recommend using that app for all your coding needs. (Like folding mirrors, very easy to use and auto backups your code for you just in case something goes wrong)

As for the DME backdating I'm not sure.

infinitekidM2C · 11-06-2019, 03:49 PM

I'd be surprised if they'd do that even if they could.

cecaa850 · 11-06-2019, 04:06 PM

Not positive about BMW but most car manufacturers only allow flashing to a newer version not older.

TheRealOrosie · 11-06-2019, 04:59 PM

My dealer is sending my DME in to Carbahn to have it unlocked and flashed, since it is newer than 5/19. I believe Dinan offers the same process for newer, locked DME's, according to my customization specialist.

CosmosMpower · 11-07-2019, 10:00 AM

Is the process to unlock the ECU just backdating it to a previous version before the March lock?

GrumpyBimmerFan · 11-07-2019, 01:31 PM

Quote:

Originally Posted by CosmosMpower

Is the process to unlock the ECU just backdating it to a previous version before the March lock?

it seems that way... the question is, how do they do it, and why can't it be done over obd2 (not questioning them, just curious what is the process difference).

And I would be very curious if any dealer could backdate... it shouldn't be too difficult.

CSL335i · 11-09-2019, 03:15 AM

Quote:

Originally Posted by kotik

Quote:

Originally Posted by CosmosMpower

Is the process to unlock the ECU just backdating it to a previous version before the March lock?

it seems that way... the question is, how do they do it, and why can't it be done over obd2 (not questioning them, just curious what is the process difference).

And I would be very curious if any dealer could backdate... it shouldn't be too difficult.

During banch flash they use a backdoor in Tricore processor and directly read and write the ecu, no matter what software it has. i assume they write back the oldet bootlooader and other stuff...

jkourie · 11-09-2019, 05:34 AM

Block the DME upgrades with a MATCH 7 amp.

What about this idea?

Expend on BM3 and then have a upgrade from your Dealer is my fear.

Thoughts!

11-05-2019, 07:21 PM	#1
GrumpyBimmerFan Captain 290 Rep 845 Posts Drives: M2CS 6spd Join Date: Jun 2011 Location: Miami iTrader: (0)	can the dealer backdate DME? as the title says... It seems that tuners say that they will can do a bench backdate the DME to pre update, and then do the tune... can't you ask the dealer for an older version of DME tune? Also, once the tuners backdate the DME, can you then control which tunes u use via an obd2? Finally, since DME is locked, can you still do coding for stuff? like folding mirrors and such... __________________ M2CS (6 speed), E38-S62 swap, E28 M5, 68 charger r/t sold - 88 Carrera whale tail, M2C, 997 4s, c7z51, F80 (6speed), c6z06, e90 m3 ess 575, 76 633 csi, etc
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11-06-2019, 03:49 PM	#3
infinitekidM2C Major General 4206 Rep 5,728 Posts Drives: 2019 M2 Competition Join Date: Nov 2007 Location: Orange County, CA iTrader: (4) Garage List 2019 M2 COMPETITION [9.50] 2008 135i (my old car) [7.39]	I'd be surprised if they'd do that even if they could.
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11-06-2019, 04:06 PM	#4
cecaa850 Captain 259 Rep 699 Posts Drives: 2018 M2 Join Date: May 2018 Location: South East TX. iTrader: (0)	Not positive about BMW but most car manufacturers only allow flashing to a newer version not older.
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11-06-2019, 04:59 PM	#5
TheRealOrosie BMW Fan Boy 446 Rep 1,385 Posts Drives: //M Join Date: Apr 2010 Location: Chapel Hill, NC iTrader: (0)	My dealer is sending my DME in to Carbahn to have it unlocked and flashed, since it is newer than 5/19. I believe Dinan offers the same process for newer, locked DME's, according to my customization specialist.
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11-07-2019, 10:00 AM	#6
CosmosMpower Brigadier General 2051 Rep 3,714 Posts Drives: F87c, GT3, MK7 GTI Join Date: Apr 2011 Location: Frisco, TX iTrader: (1)	Is the process to unlock the ECU just backdating it to a previous version before the March lock?
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11-09-2019, 05:34 AM	#9
jkourie New Member 35 Rep 21 Posts Drives: M2 Competition Join Date: Sep 2019 Location: Dominican Republic iTrader: (0)	Block the DME upgrades with a MATCH 7 amp. What about this idea? Expend on BM3 and then have a upgrade from your Dealer is my fear. Thoughts!
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