[digitldlnkwnt]

Originally Posted by M_Power Rob

Keep in mind, you better know your and gaveca good and trustworthy relationship with your SA if you take your car in for any type of service.

That’s a whole other thread:
“How to properly grease your BMW SA so they don’t flush thousands in tuning”

[tylerdurdem]

I dunno, mine asked unprompted if they should avoid updating the DME. At the time I hadn't done the CS flash so I told them to go ahead, but at least my dealer knows what's up and doesn't want to piss off customers.

[JABCAT]

Originally Posted by M_Power Rob

While it sucks for those who have the done the flash, the "new" protocol is no different than what those of us who are unlocked have to follow.

Keep in mind, you better know and have a good and trustworthy relationship with your SA if you take your car in for any type of service.

I'm lucky my SA is cool with anything I do to the car and often comments if there is something new on the car. Mine was in last week to get the driver's seat leather replaced, oil change, and spark plugs. I told him I had the CS software and to please not do any updates. He said no problem he'd make sure the tech didn't touch anything. I also like he says "and I'll make sure there's an oil sample, & they don't wash it" before I leave.

He even threw two new BMW air filters in the trunk even though I have aftermarket intakes/filters.

[chris3g]

UPDATE -

I now have confirmation that the new DME Bootloader DOES BLOCK DOWNGRADE.

So barring any unforeseen developments, CS engine flashes will no longer be possible on cars with software level 11/2025.30 or higher.

[Ceeto]

Originally Posted by chris3g

UPDATE -

I now have confirmation that the new DME Bootloader DOES BLOCK DOWNGRADE.

So barring any unforeseen developments, CS engine flashes will no longer be possible on cars with software level 11/2025.30 or higher.

Out of curiosity is there any benefit or fix introduced in 11/2025.30? Or is it just to lock things up and prevent the CS flash?

Also, does this affect ability for pre-LCI cars to get the LCI engine flash?

[chris3g]

Originally Posted by Ceeto

Out of curiosity is there any benefit or fix introduced in 11/2025.30? Or is it just to lock things up and prevent the CS flash?

Also, does this affect ability for pre-LCI cars to get the LCI engine flash?

can't answer that for sure at this time as the new SWFL will need to be mapped out to see if there any functional changes. but in all likelihood, there is no other benefits here.

yes it should also prevent LCI flash on pre-LCI as that little loophole was also corrected with the previous swfk update to version 247 and that downgrade will also now be blocked.

[ospback1843]

Are the CS trans/steering/suspension flashes also blocked because of this 11/2025.30 change?

[chris3g]

Originally Posted by ospback1843

Are the CS trans/steering/suspension flashes also blocked because of this 11/2025.30 change?

No, only engine tune is affected.

[Angmar]

I have been dealing with a similar situation with my dme being unlocked. I just leave a 1000 post it notes that say do not flash dme or update software. I also tell the service advisor who writes it on the work order and have been in for service 5 of 6 times and they haven’t screwed it up yet.

[WilcoJunoHotel]

Originally Posted by chris3g

No, only engine tune is affected.

Can or will the trans/suspension/steering flashes get overridden by a BMW OTA update or software update done by a dealer?

[MichaelNRW]

Originally Posted by WilcoJunoHotel

Can or will the trans/suspension/steering flashes get overridden by a BMW OTA update or software update done by a dealer?

RSU only when there´s an update available for the ECU.
At dealer it´s always overwritten as they´re only doing full updates that include every ECU, even when there´s no new version available.

[DDDGGG_M]

Originally Posted by chris3g

No, only engine tune is affected.

This is a relief as the steering/etc. is primarily what if are about. I wonder why they would prevent the DME upgrade but not the others.

[chris3g]

Originally Posted by DDDGGG_M

This is a relief as the steering/etc. is primarily what if are about. I wonder why they would prevent the DME upgrade but not the others.

has always been the case, for every CS model. only the engine tune has been protected.

[JABCAT]

Originally Posted by DDDGGG_M

I wonder why they would prevent the DME upgrade but not the others.

Because the engine tune/power upgrade gives you 95% of the CS for a minute fraction of the cost.

[digitldlnkwnt]

Even on the manual you get 510 vs 530 HP in the CS and they won’t make a CS manual.
Personally I’d still keep my manual M2 and go MCS custom coils. Between the power bump and M4 CSL suspension bits - that’s mostly what you’re paying for.

Inwould suggest anyone still on the July software package turn off remote software updates and at least keep the option open.

Honestly I can’t think of an easier cheaper way to get a 30HP bump,improved steering feel, suspension rebound improvement, and better throttle reaponse. In the manual car.

[CrappyDriver]

FYI, my '26 M2 was just delivered two weeks ago, and was showing a software version of 7/2025. We flashed it sucessfully this morning, auto update now disabled. Another happy convert!

[vmcast]

Originally Posted by CrappyDriver

FYI, my '26 M2 was just delivered two weeks ago, and was showing a software version of 7/2025. We flashed it sucessfully this morning, auto update now disabled. Another happy convert!

Hi, I also just got the new M2 LCI about 10 days ago and am currently breaking it in. I wanted to ask if I still have to wait until the end of the break-in period and have a service at BMW to get the CS Map?

Of course, I've blocked all updates from both iDrive and the app on my phone (I currently have version 07/2025.62).

Thank you very much

[kubax86]

Originally Posted by vmcast

Hi, I also just got the new M2 LCI about 10 days ago and am currently breaking it in. I wanted to ask if I still have to wait until the end of the break-in period and have a service at BMW to get the CS Map?

Of course, I've blocked all updates from both iDrive and the app on my phone (I currently have version 07/2025.62).

Thank you very much

No need to wait, you can get it done ASAP. I did many cars right after delivery.

[digitldlnkwnt]

vmcast
Just make sure you observe the RPM limits
0-600 miles do not exceed 5K RPM
600-1200 miles do not exceed 6K RPM

And go get your CarMitzvah (break-in) service at 1200 or as close as you can - sooner is better than later.

[vmcast]

Originally Posted by kubax86

No need to wait, you can get it done ASAP. I did many cars right after delivery.

okok, I'll get the OBD Ethernet cable and we'll update!
In the CS map, I need to disable OPF because I want to install a single Milltek 4" mid pipe.


@digitalldlnkwnt
Yes, of course, I'm doing it very well according to BMW's instructions.
Thanks!

[kubax86]

Originally Posted by vmcast

okok, I'll get the OBD Ethernet cable and we'll update!
In the CS map, I need to disable OPF because I want to install a single Milltek 4" mid pipe.


@digitalldlnkwnt
Yes, of course, I'm doing it very well according to BMW's instructions.
Thanks!

No problem, we can do both OPF and CS Map for you.

[vmcast]

Originally Posted by kubax86

No problem, we can do both OPF and CS Map for you.

Regarding the OBD/Ethernet cable, the link on your website isn't available in Europe.

Can I get any one, like this one?
https://www.amazon.it/Dezanyc-Cabel-...zcF9hdGY&psc=1