[simaservis1108]

Better to patch 18-11 version and be done with it...

[emiliof56]

no, it does not work like that, .. to be able to install a previous version, you must first reset the whole SW and booltloader, then flash with the desired version.

could you please share some information on how to reset btld and swfl so it will accept to be flashed?

[RocketSurgeon]

To allow a flash in e-sys, it must think the module software is older. When you read the SVT and save it as SVT_ist, click edit and find the modules you want to flash. Under BTLD, SWFL, and CAFD, change the main version to 000, then save the file. When you calculate a target, esys will think you have very old software, and allow you to flash the module.
This works great for flashing a module that is already up to date.
Be careful doing this, as some modules do not take well to downgrades.

[emiliof56]

Thank you for your answer. I know this procedure, but in this specific case there is some kind of protection implemented by bmw that prevents the old softwares and bootloader to be flashed.
The old btld and swfl are correctly identified by Esys and the flash starts, but then it always fail while you try to downgrade, and then you have unkn elements under the ecu list. At this point, you can only reflash the newest 19-03 softwares to have the DME work.
To be precise, the error is related to some dependency which is not correct. The flash always fail just after the btld flash, which is correctly done. As soon as it starts to flash the first swfl, then it fails.
So the btld can be actually downgraded, the swfl can’t.
Any help is appreciated!

[emiliof56]

This is the error you get when you try to flash 18-11 softwares on DME

Read SVT before TAL execution started.

TAL execution started.
VCM Update: VCM-Update is deactivated. VCM will not be updated. [C197]
ExecutionID=2019/07/04-18:35:54.115
[] prepareTALExecution started [PROGRESS]
[] prepareTALExecution finished [PROGRESS]
[] prepareVehicleForFlash started [PROGRESS]
[] prepareVehicleForFlash finished [PROGRESS]
[DME_BAC - 12] prepareECUforBLUpdate started [PROGRESS]
[DME_BAC - 12] prepareECUforBLUpdate finished [PROGRESS]
[DME_BAC - 12] authenticateECUforBLUpdate started [PROGRESS]
[DME_BAC - 12] authenticateECUforBLUpdate finished [PROGRESS]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: TA started [TRANSACTION]
[DME_BAC - 12] performECUBLUpdate started with protocol UDS [PROGRESS]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [0% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 0% progress on ECUIdbiggrinME_BAC_0x12 [6% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: 1% progress on ECUIdbiggrinME_BAC_0x12 [100% of btld_0000208c-002_059_005] [TRANSACTION]
[DME_BAC - 12 - btld_0000208c-002_059_005] Transaction type: blFlash; Message: TA finished [TRANSACTION]
[DME_BAC - 12] installECUBL started [PROGRESS]
MCDDiagService<id=43200, job=com.bmw.psdz.jobs.uds.MCD3_InstallECUBL, service=RC_CPD - RoutineControl CheckProgrammingDependencies, description=error: positive response with negative content, link=DME_BAC_12_ETHERNET> [DIAGSERVICE]
[DME_BAC - 12] installECUBL error [PROGRESS]
[] job failed with negative response error:
code: the programming dependencies are not correct
description: MCD3_InstallECUBL failed - service RoutineControl CheckProgrammingDependencies delivered incorrectResultError_SWE_SWE; LinkName: DME_BAC_12_ETHERNET
severity: ERROR
[THROWABLE]
[DME_BAC - 12] There was an error during TAL execution, please check the log files. [WARN]
[DME_BAC - 12] - [Exception - DME_BAC - 12] job failed with negative response error:
code: the programming dependencies are not correct
description: MCD3_InstallECUBL failed - service RoutineControl CheckProgrammingDependencies delivered incorrectResultError_SWE_SWE; LinkName: DME_BAC_12_ETHERNET
severity: ERROR

[] finalizeVehicleFlash started [PROGRESS]
[] finalizeVehicleFlash finished [PROGRESS]
[] prepareVehicleForCoding started [PROGRESS]
[] prepareVehicleForCoding finished [PROGRESS]
[] finalizeVehicleCoding started [PROGRESS]
[] finalizeVehicleCoding finished [PROGRESS]
[] finalizeTALExecution started [PROGRESS]
[] finalizeTALExecution finished [PROGRESS]
TAL execution finished [TAL_EXECUTION_FINISHED]
TAL-Execution finished with status: "FinishedWithError". [C207]
TAL execution finished. Duration: "56s". [C206]