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      04-16-2012, 12:19 PM   #50
Mike Benvo
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Drives: 08 E90 M3 / 400whp Turbo 7
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1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
2008 BMW M3  [5.00]
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Originally Posted by KJ View Post
The dealer would normally void the warranty on the DME if you updated the software to an aftermarket tune.

Would they still be able to void it if you update the firmware to 231E since it's legitimately OEM software?
You can update it to whatever OEM software you want without fear of warranty rejection.

However, you might cause issues if you update the DME to the newest version and fail to update other control units in the car.

In fact, this could potentially halt the dealer systems and could potentially mark your DME is failed when hooked up to BMW diagnostics equipment. This is because the ISTA/P integration level is different across modules in the car.

If you are going to perform an update to the DME, make sure you flash the rest of the car to the corresponding software level as well.

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Last edited by Mike Benvo; 04-16-2012 at 12:32 PM.
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