• My command string is very similar. Have you run erase_flash as suggested? That wipes everything and is a good idea when moving between versions.

  • I did use erase_flash with no observed difference.

    To rule out some of the obvious;

    To confirm, your development chip is an ESP8266-12 and are you developing on the Windows 10 platform?

    Might be down to a PC reboot, although I did cold start yesterday.

    To me still appears to be new firmware that is causing issue, as boot_v1.6.bin is newer than that 1.4 in flash instructions.


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