MHD Failed Flash

[antmazz]

I'm dealing with the exact same issue and working with MHD for a solution. Flash back to stock worked for me as well and made the car driveable again.

Well I'm glad I'm not alone.

If there's anything I can do to help out let me know

Sponsored

 

[Killswitch24]

Are you using a decent battery charger? From what I'm reading online about flashing problems usually points to the battery and/or charger. Mine seems to be able to put out 20-25 amps so I'm hesitant to condemn it.

I'm wondering if it could be an app problem. Looks like I'm using V3.60 which was just updated 1/17/22 that states to include some B58 gen1 updates.

 

[LoveSupra]

I dont use MHD, but I had issues with BootMod3 initially on my first flash where it was telling me to force the flash, at the same time risking my car not starting. Decided not to mess around and spoke to support at bm3. Gave it another try and worked out fine. Was a glitch on the system.

I used a really helpful link on the forum by one of the kind posters to figure out whether my dme (year 2019) was locked or not. And that basically solved my issue well before the support at bm3 confirmed that it didn't need a bench unlock.

The date of the dme isn't really that helpful for figuring out if it needs a bench unlock (referring to pre late 2020) unless you know the actual software version it is running on. Once again the link I used helped me figure it out.

?

 

[antmazz]

Are you using a decent battery charger? From what I'm reading online about flashing problems usually points to the battery and/or charger. Mine seems to be able to put out 20-25 amps so I'm hesitant to condemn it.

I'm wondering if it could be an app problem. Looks like I'm using V3.60 which was just updated 1/17/22 that states to include some B58 gen1 updates.

My charger is the same as yours. I may be being naive, but if it were the charger I'd have expected not to be able to flash back to stock as well as not flash the OTS map.

I thought that it could possibly down to the MHD+ features they've recently added. When did you first try to flash it?

 

[antmazz]

I dont use MHD, but I had issues with BootMod3 initially on my first flash where it was telling me to force the flash, at the same time risking my car not starting. Decided not to mess around and spoke to support at bm3. Gave it another try and worked out fine. Was a glitch on the system.

I used a really helpful link on the forum by one of the kind posters to figure out whether my dme (year 2019) was locked or not. And that basically solved my issue well before the support at bm3 confirmed that it didn't need a bench unlock.

The date of the dme isn't really that helpful for figuring out if it needs a bench unlock (referring to pre late 2020) unless you know the actual software version it is running on. Once again the link I used helped me figure it out.

?

Do you have the link you used please?

 

[LoveSupra]

Do you have the link you used please?

Sure!

https://mgflasher.atlassian.net/wik...for+Select+BMW+MG1+including+new+07.2020+ECUs

Basically the Supra is a Gen 2 B58 engine. The ID of my dme is 48DC with bootloader version BTLD-001.009.003 (as per Bootmod3 after connecting to OBD2).

Hence, I worked out that it did not require bench unlock and I flashed Bootmod3 with this knowledge.

As I stated earlier my ECU is year 2019, I just happened to also have an unlocked dme because Toyota never updated my firmware.

This is all just my own research on the topic, and I am not a tuner. I think it's best to always confirm with a tuner just to be sure.

 

[Killswitch24]

My charger is the same as yours. I may be being naive, but if it were the charger I'd have expected not to be able to flash back to stock as well as not flash the OTS map.

I thought that it could possibly down to the MHD+ features they've recently added. When did you first try to flash it?

Some of my thoughts exactly. Flash back to stock worked so it probably isn't an "unlock" problem either. I originally tried to flash on Wed. 1/19

Edit:
Thanks for the link @LoveSupra, my BTLD is on the "low security' list so it should be an issue with unlock. (BTLD 48DC v001_011_001)

 

[antmazz]

Sure!

https://mgflasher.atlassian.net/wik...for+Select+BMW+MG1+including+new+07.2020+ECUs

Basically the Supra is a Gen 2 B58 engine. The ID of my dme is 48DC with bootloader version BTLD-001.009.003 (as per Bootmod3 after connecting to OBD2).

Hence, I worked out that it did not require bench unlock and I flashed Bootmod3 with this knowledge.

As I stated earlier my ECU is year 2019, I just happened to also have an unlocked dme because Toyota never updated my firmware.

This is all just my own research on the topic, and I am not a tuner. I think it's best to always confirm with a tuner just to be sure.

Thank you! My BTLD is on the Low Security list too ?

 

[NitroYellowMKV]

This is the exact same thing that happened when flashing my best friends m4 with MHD after we accidentally re locked it testing it stock with MHD, 5% and fail. it sounds like a locked ecu to me

 

[antmazz]

We have success!

The guys at MHD were a great help. Seems to be a problem with the latest version of their app. They sent me an old version to install on my phone (v3.62), I installed it and was up and running in 10 minutes.

 

[Killswitch24]

Likewise.

It was an app problem and, though it may not yet be resolved in the official release version found in the play/apple store, I don't imagine that it will take them long to implement the fix.

Sponsored