MSD81

**darknezz19** · 3rd November, 2022, 10:39 PM

Anyone seen this? When i flash a stock tune from bimmerlabs it says flash went ok. Then when im in diag i cant do anything like coding or injectors or even erase dtcs. Always says error. Msd81 2007 335i. Using the bat file to flash.

If i flash with winkfp manually in comfort mode by selecting msd81 and then entering vin, it always has dme data record incorrect error. Even after releasing adaptations and variants and recoding. Working hours is 0 in dme, so not a powerclass issue.
Any suggestions? Thank you for your time.

**ricked** · 4th November, 2022, 09:29 PM

what happens if your flash back the original one, because is you have a "maps" only file then there is probably your error

**darknezz19** · 5th November, 2022, 05:00 AM

I'm trying to program donor msd81 from original damaged msd80. MSD81 has original dme isn programmed, and working hours reset and checksum correction. original msd80 is index 01 on label, donor msd81 is index 04.

Things I have tried so far.

WinKFP comfort mode, select msd81 form the update zusb button(3rd), then click vin button(4th) and enter vin, then click done and program. Dme works but had data record error limp mode.

Tried to use bat files for expert mode flashing from bimmerlabs. Flash goes well but then dme is only semi working and things like dtc clear and injector coding fails. Semi corrupt it would seem.

Try to use expert mode manually selecting the hardware numbers and zusbs listed on bimmerlabs. DME is semi corrupt like before.

I'm checking for data record incorrect before hooking up cas and doing coding. It shouldn't have that error with just that module hooked up as the msd80 doesn't show that error with just it hooked up. Been at this for a couple days now>< Maybe this msd81 had a tune or something similar because when I flash the original backup back it has data record mismatch right from the beginning. Maybe winkfp can't write to an area that was previously modified?

What do you mean by maps only file? does this mean the bat files from bimmergeeks only flashes the maps? Tried to flash the rsa delete but it was semi corrupt like with the other ones. Customers msd80 does have an MHD setup as well.

Edit: have 3 different msd81 dumps. All three have this error after flashing back and testing with only the dme hooked up on the bench. I guess this is normal? The error should go away though with matching cas3 and a donor kombi and jbbfe hooked up though right?

**ricked** · 5th November, 2022, 10:31 AM

in short :

1.Read ISN from MSD80/CAS
2.Write ISN to MSD81(with original not messed with data)
3.Reset working hours on MSD81
3.Perform programming/coding/write injector coding

THATS IT, if you have errors stop using the bimmerlabs files and use a ecu with original software to begin with

**darknezz19** · 8th November, 2022, 11:15 AM

Someone have a known good dump of either msd81 or 81.2 they can upload?

**darknezz19** · 10th November, 2022, 07:01 AM

Got it finally. First of all this bench cable is wired wrong. Couldn't get solid CAN coms to work while JBBFE and DME was hooked up. Would drop modules randomly with ident in Ista.

https://www.uhs-hardware.com/product...-bmw-cas2-cas3

The DME connector is wired straight to the OBD port Can low and Can high. Have to run them to the jbbfe pins 1(high) and 2(low) on the blue connector for PT can H/L. Once I did this was able to redo coding and no more 2FA4 error. Guess MSD81 needs CAS on the network to not get this error.

I also updated this KD CAN cable's atmel firmware. I'm not sure if this helped, but flashing in WinFKP took longer this time in comfort mode. Redid coding once again and surprise, still no 2FA4 error. The firmware probably didn't help with this but nice to have.

Now what about mileage in the donor DME? how do we check the stored mileage? Once I change the ISN with FC200, mileage goes to 0 in the UIF. I don't think FC200 zero's out mileage but maybe it did? IS there a job intool32 that can show stored mileage?

As long as stored mileage is lower than CAS it will update to the higher mileage once driven?

**ricked** · 11th November, 2022, 08:49 PM

Originally Posted by darknezz19

Got it finally. First of all this bench cable is wired wrong. Couldn't get solid CAN coms to work while JBBFE and DME was hooked up. Would drop modules randomly with ident in Ista.

https://www.uhs-hardware.com/product...-bmw-cas2-cas3

The DME connector is wired straight to the OBD port Can low and Can high. Have to run them to the jbbfe pins 1(high) and 2(low) on the blue connector for PT can H/L. Once I did this was able to redo coding and no more 2FA4 error. Guess MSD81 needs CAS on the network to not get this error.

I also updated this KD CAN cable's atmel firmware. I'm not sure if this helped, but flashing in WinFKP took longer this time in comfort mode. Redid coding once again and surprise, still no 2FA4 error. The firmware probably didn't help with this but nice to have.

Now what about mileage in the donor DME? how do we check the stored mileage? Once I change the ISN with FC200, mileage goes to 0 in the UIF. I don't think FC200 zero's out mileage but maybe it did? IS there a job intool32 that can show stored mileage?

As long as stored mileage is lower than CAS it will update to the higher mileage once driven?

Car will take highest mileage, also, msd81.2 is 4 cylinder, msd81 is 6 cylinders so not ~~~~up with that!