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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@AaronB
user1 is written to the address for normal flashing user2 is flashed to a different address for flashing over wifi I believe. I've not flashed the latest firmware yet but use the NodeMCU firmware flasher,
boot_v1.6.bin - 0x00000
espruino_esp8266_user1.bin - 0x01000
esp_init_data_default.bin - 0x3FC000
blank.bin - 0x3FE000