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  • Thanks Gordon.
    For the esp8266 build the 1.5 boot loader is missing so flashing via serial fails:

    C:\Users\rhys\OneDrive\esp8266\firmware\­espruino_1v87_esp8266>..\..\esptool-mast­
    er\esptool.py --port COM3 --baud 115200 write_flash --flash_freq 80m --flash_mod
    e dio --flash_size 32m 0x0000 "boot_v1.5.bin" 0x1000 espruino_esp8266_user1.bin
    0x37E000 blank.bin
    Connecting...
    Traceback (most recent call last):
      File "C:\Users\rhys\OneDrive\esp8266\esptool-­master\esptool.py", line 724, in
    <module>
        main()
      File "C:\Users\rhys\OneDrive\esp8266\esptool-­master\esptool.py", line 628, in
    main
        image = file(filename, 'rb').read()
    IOError: [Errno 2] No such file or directory: 'boot_v1.5.bin'
    

    There is an issue here:
    https://github.com/espruino/Espruino/iss­ues/912

    This is part of the https://github.com/pfalcon/esp-open-sdk - so I'm not sure if its the ci-travis file that needs updating, or only the makefile.

    https://github.com/espruino/Espruino/blo­b/master/Makefile#L1927

    BOOTLOADER = "$(ESP8266_SDK_ROOT)/bin/boot_v1.4(b1).b­in"
    to
    BOOTLOADER = "$(ESP8266_SDK_ROOT)/bin/boot_v1.5.bin"

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