Upgrade keeps failing

  • Hi,
    I ordered 2 LoPy with expansion board. While I could successfully upgrade one of the boards to 1.1.0b1, the upgrade of the other keeps failing. I swapped the expansion board, but the problem still remains. I get the following error:

    Exception: Failed to connect to ESP32: Timed out waiting for packet header, on line 121

    It is currently on 0.9.0b and can't be upgraded. Can you please advise?

  • @jnc That's a first good point...

  • @Oneillsite
    Hi again, after performing as you suggest and relaunching the upgrade procedure, it did work. Thanks a lot

  • @Oneillsite here's what I get:

    Welcome to minicom 2.7
    OPTIONS: I18n 
    Compiled on Feb  7 2016, 13:37:27.
    Port /dev/ttyUSB0, 13:19:54
    Press CTRL-A Z for help on special keys
    dhcp server start:(ip:, mask:, gw:
    MicroPython 8785822 on 2016-10-06; LoPy with ESP32
    Type "help()" for more information.
    >>> ets Jun  8 2016 00:22:57
    waiting for download

  • Can you perfomr this sequence ?

    minicom -b 115200 -D /dev/ttyUSB0
    put the jumper cable between GND and the pin marked as G23
    press reset on the lopy

  • @Oneillsite I only have a linux box. I own 5 LoPy in total, and could update 4 of them. Only one in my last order fails.

  • I tried several cables and did uncheck the 'fast connection' tickbox.

  • Can you do an upgrade from PC/Win10 ?

  • same cable?
    and did you tried uncheck "fast connection" in updater?

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