One of the problems Bob has is that his car is, like mine, a 4.2, so he has no way of testing the ADU on the 5.0 cars. It may be that you have encountered an issue with the update that is specific to the 5.0 cars. @MarkyUK is a knowledgeable early adopter of the ADU 5.0 version and reaching out to him may offer you some useful advice.

Just one thing - I am pretty sure you downloaded the correct (5.0 engine) version of the updater, yes?

 

That picture doesn't look like version 2.1.0.5.
What version indicates the startup screen?
I noticed that when errors are occurring, this is due to the ELM327 can't keep up with the request frequency of the device.

About the gallons (and other non-metric units), this is chosen otherwise there are too many variables for me to create an "EZ-update" file.
But you can always try to do it the less convenient way:
- install arduino IDE software
- install ESP32 in the arduino IDE (Additional Boards Manager)
- connect the device to your computer
- select the correct ESP32 board (Boards Manager) and COM port
- download the (not-EZ) Arduino code.
- change the code to your liking's (units)
- upload the code to the ESP32 board

All is explained in the PDF "Manual: software" downloadable from my website (see my signature)

 

can you make a printscreen? I can read the text ...

 

also what the first screen shows where it detects the device, can you show?

 

Can you make it out now?

 

Mine showed up last night! I've got very full work days today and tomorrow, so it'll probably be Saturday or Sunday before I get to all this. But I'm very excited to have coolant temp / warning indicators.

 

Thanks Barnsie I can read it.
It looks like it doesn't connect to the ESP32 in a correct way.
Looking at DGL's picture, he has Windows 10,
probably he has to re-download the drivers from this site (windows 10 universal) and install them again.
use a different USB (3.0) port may also help.

It should look like this: (I downloaded the firmware so using the same file)

 

That's fast ! you were last in the row.

 

If you recall, I got a similar sort of error when I first attempted to update my unit and I downloaded the latest Windows drivers, installed them, and it all went smoothly after that. At least, it is worth a try since it only takes a minute and costs nothing. One more thing eliminated from the troubleshooting.

 

I think for now I will stay with the way it is , am very happy just to look down and see temp. Would like to have the warning but can live without it for now.

 

Drivers are installed. See screen shot.

 

The 4.2 code will also work on 5.0 cars.
and 5.0 code also works on a 4.2 car (until you request a screen that should display oil level, you'll get an error)

 

Keep getting same errors:

 

Screen shots of downloaded update file for 5l:

 

strange ... I see "access denied".

Can you check:
- what does the 1st cmd screen show?
- in device manager the COM port of the device (it should show COM3)
- disable bluetooth on your laptop (often seen as a COM port)
- try right-click the firmware.bat file and select "run as administrator".

 

1st cmd screen:

 

Ran as admin and got this:

 

Disabled bluetooth, ran as user and as admin still did not update.

 

ok so COM3 is correct.
things that might cause the problem:
- you installed the X64 drivers and you have a X32 computer,
- the esptool.exe file is corrupt: re-download the firmware
- the esptool.exe comes from my computer (X64) an is not suitable for X32 computers.
- you don't have administrator rights on the laptop (very unlikely this causes the problem)

other solutions possible
- disable bluetooth on laptop
- use a different USB port
- use a different USB cable
- use a different computer
- connect the existing USB cable to a power supply (or computer, providing extra power)

 

Screen shot from device manager showing bluetooth off and device recognizing COM3: