Problem uploading VEMS firmware

[Jonas_R]

Hi,

I was just trying out Vemstune and wanted to upload the 1.1.27 Audi Firmware with 12x12. However for some odd reason I can't do this, it says an error has occured and that it is in boot loader mode. Whatever the hell that means.

It can then detect the ecu but not connect to it because it is en boot loader mode.

Now I have tried the a reset method described on vems.co.uk/forum, and it worked one time. But then I tried to do update again and samething happend.

And now the reset does not seem to function.

So any good ideas?

[Jamo]

what are you using to go back to 1.1.27? vemstune or megatune?

I used the A4kquattro method as downgrading via vemstune is not the best method I have found

if you need to go back to 1.1.27 follow the following procedure (the issue is that 1.1.44 floods the serial line with the AIM communication protocol, which prevents the firmware reset from working right):


1) edit the file 'upload-firmware12x12.bat' in the 1.1.27 megatune folder. Change the line that starts with: tools\megaloader.exe to read like so:

tools\megaloader.exe firmware\vems12x12.hex -wE -c com1

where "com1" is whatever your serial port is.

2) turn ecu off. Make sure no megatune or other programs are running that might try to use the serial port
3) shove a bent paper clip between pins two and three of the serial connector
3) power on ecu. wait 3 seconds. remove paper clip and connect serial cable to your computer.
4) run the upload-firmware12x12.bat file. It will ask you to press a key to continue etc. The process should complete successfully.

[AllarN]

1.1.27 is old, I used it 2 years ago. Now Im using 1.1.70 on my audi.

[Jamo]

1.1.27 is old, I used it 2 years ago. Now Im using 1.1.70 on my audi.

Ditto I'm on the same 1.1.7.0 firmware, but a lot of Audi S2's are using 1.1.27 firmware as it is ultra stable for the engine.

And it's a good place to get a nice basetune before going to 1.1.70

[Jonas_R]

I just got it working. My ecu had firmware 1.1.23 but seems to be working now using my server and the seriel port on it. Perhaps the serial pcmcia was bad.

Reason for using 1.1.27 was that I got a Nice basemap from mark for rs2 injectors. So wanted to try that out first and get familiar with vemstune and get VE table etc sorted.

[Jonas_R]

And no it still crashes when I tried to upgrade from 1.1.23 to 1.1.27 via Vemstune build in firmware upload.

[Jamo]

Use the megatune option I posted above, megatune download is on the EFI website with the required files

[Jonas_R]

Yup that seemed to work now, used mark's file after the reset and now I was able to use VEMStune to upload firmware 1.1.27 and config 1.1.27.

And thanks for the help.

Jamo:
The basemap I have is a MSQ file, can that be imported into VEMS tune?

Also when you upload config to VEMStune I assume that corressponds to loading a msq file en MegaTune? Or I'm way off?

[Jamo]

Msq file have to be uploaded in megatune. Once uploaded connect via vemstune and save the config as a .vemscfg file

Upload config in vemstune yes is the same as upload msq in megatune

[A80Avant]

you can also use the old v3gui software to reflash the ecu with the older firmwares.

i would go through vemstune to upgrade/downgrade though(even though i havent done that yet).

[Jamo]

you can also use the old v3gui software to reflash the ecu with the older firmwares.

i would go through vemstune to upgrade/downgrade though(even though i havent done that yet).

Only for the newer versions, vemstune sucks for the 1.1.2x verisons for firmware uploads.

It will go into a loop, I had a success of 1 out of 5 attempts with it.

No such problems with megatune, this isn't really surprising as vemstune was aimed for the newer versions

[A80Avant]

aa i see.
better think of it twice before i upgrade then. i have forgotten how to do it already.

Good thing Marc is always kind to help

[Jamo]

It's only a problem when you need to go to 1.1.27 from any other verison and try to do it with vemstune. If you want to downgrade or upgrade to 1.1.27 use megatune. I would say this applies to most versions up until 1.1.5x from my experience of firmware uploads

[Jonas_R]

But it should be fine to use VemsTune with 1.1.27 right?

[Jamo]

But it should be fine to use VemsTune with 1.1.27 right?

Yeah I had no problems using it with vemstune once the ecu was on the version