How to relock the ECU when removing bootmod3

Eric SS · 10-09-2020, 12:05 PM

Hello all. New to me 2018 M4 will be arriving by truck on Monday. It currently has a BM3 OTS tune installed. The first thing I want to do when it comes off the truck is hook it to the charger, remove the tune, and relock the ECU. I have the bootbod3 app on my phone, an iphone lightning to ethernet adapter, and an ENET cable already so will be able to do this via the OBD port.

From what i understand I will be able to do this from my home. What i don't know are the steps. So I am preemptively asking HOW I would go about flashing back to the last OEM tune and re-locking the ECU. I am aware that the dealer will still be able to see if was flashed (And I'm not trying to hide that) but I want to relock it so that it is as it was prior to the tune. Thanks all.

tom @ eas · 10-09-2020, 12:37 PM

User manual, pg38.

Eric SS · 10-09-2020, 01:04 PM

Thanks Tom! I don't have the user manual and didn't know one existed so that works for me

TopJimmy · 10-09-2020, 02:55 PM

Eric,

Do you have access to the BM3 account that did the flash? I believe that account has the "stock tune" file needed to restore the ECU to its base code.

-TJ

Eric SS · 10-09-2020, 05:24 PM

Quote:

Originally Posted by TopJimmy

Eric,

Do you have access to the BM3 account that did the flash? I believe that account has the "stock tune" file needed to restore the ECU to its base code.

-TJ

I'm not sure but I can text the person who sold me the car to see if he has an account. It was done at a shop so i'm not sure if he had to create an account or not.

tom @ eas · 10-09-2020, 05:25 PM

Quote:

Originally Posted by Eric SS

I'm not sure but I can text the person who sold me the car to see if he has an account. It was done at a shop so i'm not sure if he had to create an account or not.

All BM3 users have an account. Owner should be able to retrieve it from the shop if he doesn't have login info.

Eric SS · 10-12-2020, 01:10 PM

Quote:

Originally Posted by tom @ eas

All BM3 users have an account. Owner should be able to retrieve it from the shop if he doesn't have login info.

OK thank you. I'll check on it. It's not a matter of just plugging it in and it recognizing the VIN I take it.

Djdnav · 10-12-2020, 08:30 PM

Quote:

Originally Posted by Eric SS

OK thank you. I'll check on it. It's not a matter of just plugging it in and it recognizing the VIN I take it.

No, you need to log in to the app/website.

Eric SS · 10-13-2020, 03:20 PM

One more question all. I can't get the tuner to get me the info. It's only been since this morning so no big deal yet.

HOWEVER, I need to leave on a trip tomorrow morning and if nothing else I NEED to switch the map from the Stage 1 93 to the stock or stage 1 91ACN since I'm here in Phoenix and the vehicle was just dropped off from Dallas. Am I able to change to a stock or 91ACN map without the account?? I can always lock at a later time but I really don't want to drive on the 93 map. Thanks.

Djdnav · 10-13-2020, 05:20 PM

Quote:

Originally Posted by Eric SS

One more question all. I can't get the tuner to get me the info. It's only been since this morning so no big deal yet.

HOWEVER, I need to leave on a trip tomorrow morning and if nothing else I NEED to switch the map from the Stage 1 93 to the stock or stage 1 91ACN since I'm here in Phoenix and the vehicle was just dropped off from Dallas. Am I able to change to a stock or 91ACN map without the account?? I can always lock at a later time but I really don't want to drive on the 93 map. Thanks.

No, you need an account. Just stay out of boost while you figure it out, you’ll be fine.

tom @ eas · 10-13-2020, 05:21 PM

Quote:

Originally Posted by Eric SS

One more question all. I can't get the tuner to get me the info. It's only been since this morning so no big deal yet.

HOWEVER, I need to leave on a trip tomorrow morning and if nothing else I NEED to switch the map from the Stage 1 93 to the stock or stage 1 91ACN since I'm here in Phoenix and the vehicle was just dropped off from Dallas. Am I able to change to a stock or 91ACN map without the account?? I can always lock at a later time but I really don't want to drive on the 93 map. Thanks.

Reach out to Pro Tuning Freaks and see if they can help, the license should be intact since the tune is still on the car.

10-09-2020, 12:05 PM	#1
Eric SS Lieutenant 195 Rep 467 Posts Drives: 2016 Chevy SS Sedan Join Date: Mar 2011 Location: Phoenix iTrader: (0)	How to relock the ECU when removing bootmod3 Hello all. New to me 2018 M4 will be arriving by truck on Monday. It currently has a BM3 OTS tune installed. The first thing I want to do when it comes off the truck is hook it to the charger, remove the tune, and relock the ECU. I have the bootbod3 app on my phone, an iphone lightning to ethernet adapter, and an ENET cable already so will be able to do this via the OBD port. From what i understand I will be able to do this from my home. What i don't know are the steps. So I am preemptively asking HOW I would go about flashing back to the last OEM tune and re-locking the ECU. I am aware that the dealer will still be able to see if was flashed (And I'm not trying to hide that) but I want to relock it so that it is as it was prior to the tune. Thanks all. __________________ 2011 335is Black/Oyster. 1 of 46 without moonroof (total of all years): JB4 E50 tune, gone 2013 335i M Sport JB4: Estoril Blue gone 2018 M4 ZCP: current 2023 X3M Comp: current
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10-09-2020, 01:04 PM	#3
Eric SS Lieutenant 195 Rep 467 Posts Drives: 2016 Chevy SS Sedan Join Date: Mar 2011 Location: Phoenix iTrader: (0)	Thanks Tom! I don't have the user manual and didn't know one existed so that works for me __________________ 2011 335is Black/Oyster. 1 of 46 without moonroof (total of all years): JB4 E50 tune, gone 2013 335i M Sport JB4: Estoril Blue gone 2018 M4 ZCP: current 2023 X3M Comp: current
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10-09-2020, 02:55 PM	#4
TopJimmy Major General 5463 Rep 5,155 Posts Drives: 2023 M3 Comp xDrive Join Date: Jul 2019 Location: Chester County, PA iTrader: (5)	Eric, Do you have access to the BM3 account that did the flash? I believe that account has the "stock tune" file needed to restore the ECU to its base code. -TJ __________________ '18 F80 Base 6MT \| '19 F82 Exec DCT \| '18 F82 Comp Exec DCT \| '23 G80cx
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10-13-2020, 03:20 PM	#9
Eric SS Lieutenant 195 Rep 467 Posts Drives: 2016 Chevy SS Sedan Join Date: Mar 2011 Location: Phoenix iTrader: (0)	One more question all. I can't get the tuner to get me the info. It's only been since this morning so no big deal yet. HOWEVER, I need to leave on a trip tomorrow morning and if nothing else I NEED to switch the map from the Stage 1 93 to the stock or stage 1 91ACN since I'm here in Phoenix and the vehicle was just dropped off from Dallas. Am I able to change to a stock or 91ACN map without the account?? I can always lock at a later time but I really don't want to drive on the 93 map. Thanks. __________________ 2011 335is Black/Oyster. 1 of 46 without moonroof (total of all years): JB4 E50 tune, gone 2013 335i M Sport JB4: Estoril Blue gone 2018 M4 ZCP: current 2023 X3M Comp: current
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