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| 04-08-2026, 02:20 PM | #2 |
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Lieutenant
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Drives: 2025 M340i XDrive
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BM3 or MHD will tell you if DME is locked and a bench unlock is required.
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tracer bullet6031.00 Jayzio30.00 |
| 04-22-2026, 03:50 AM | #3 |
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Yes, your DME is locked.
The question is what kind of unlock it needs: - pre 06/2020 DME requires bench unlock, any decent tuning shop should be able to do it - after 06/2020 DME requires femto or autotuner unlock, you would need to ship DME to them MHD/BM3 will tell you which type of unlock you need. |
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tracer bullet6031.00 Jayzio30.00 |
| 04-22-2026, 11:35 AM | #4 |
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MHD Doesn't Work
So , I have a 2019 M850i coupe.
I have done some mods. Long story short Got the F+G Super license. Tried to perform stage 1 flash and error message states "ROM Not Supported Contact MHD Support". Well I did that and I'm being told From MHD That they DO NOT have anything for N63. Now my question is this I have seen many guys tune M550i with N63 motor , not a lot out there for us M850i guy's. Anyone out there with some InSite on where to go from here now that I basically have a $856 tune I can't do anything with because MHD said they are NOT doing any updates to support my vehicle. |
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| 04-23-2026, 05:47 PM | #7 |
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Grumpy Old Fart
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| 04-23-2026, 05:54 PM | #8 | |
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Grumpy Old Fart
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Quote:
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| 04-24-2026, 03:14 PM | #9 |
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Lieutenant
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Drives: 2025 M340i XDrive
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I'd hit up MHD for a refund and tell them their compatibility verbiage was confusing. To actually flash your car, go with Bootmod3 (BM3), they fully support the N63 platform. Just remember you'll need a DME bench unlock before you can flash anything.
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