Zombieverter looses WiFi connection when trying to update

[Jacobsmess]

A friend asked me to check their zombieverter with my bench setup, all checked and fine but it is still on version 2.04. when I try to update it by swd UART update, the binary file uploads but the connection drops and it doesn't complete the update.

[tom91]

its not swd update... this is covered many times in videos and the forum

You need the other update.

[Jacobsmess]

its not swd update... this is covered many times in videos and the forum

You need the other update.

Sorry thats my memory, I was trying via UART not SWD and it was failing.

[johu]

The latest web ui hides SWD update as it only works with additional connections. And even then it never really worked for me

UART may fail but in that case you can power cycle and retry

[Jacobsmess]

The latest web ui hides SWD update as it only works with additional connections.

I was never sure but will the latest web UI work on zombie?

UART may fail but in that case you can power cycle and retry

I did try power cycling several times but the behaviour was the same, it says upload complete, but then doesn't do anything and the WiFi connection drops.

[nkiernan]

I was never sure but will the latest web UI work on zombie?

Yep, it works and is a good job. I recently made up some ESP8266 wemos adaptors and have tested the new UI on two ZV's. also tried an ESP32 based wifi module but haven't got that version working yet

[peterdiffey]

I have been suffering the same issue. I have been struggling with the issues for several days. I was getting the progress bar stopping at regular intervals. I was still able to ping the VCU.
I think I have now solved the problem.
Disconnect the Canbus, this instantly fixed my problem. I think canbus messages have higher priority than all other and are stopping the firmware reload.

[johu]

That's indeed very odd. The boot loader just listens to ID 0x7DD all other messages are ignored on hardware level and don't generate interrupts.

Do you have 7DD on the bus?

[Jacobsmess]

Sorry I should have updated this. I managed to get it to work by reflashing the wemos SPIFFS via Arduino IDE with the newly updated web interface, this allowed zombieverter to be updated after.