Program your board using the esptool.py program, found [here](https://github.com/espressif/esptool). Your TinyPICO has an auto-reset circuit on it, so there is no need to put it into a download mode first to erase or flash it. If you are putting MicroPython on your board for the first time then you should first erase the entire flash using: ### Linux ```bash esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash ``` ### Mac ```bash esptool.py --chip esp32 --port /dev/tty.SLAB_USBtoUART erase_flash ``` ### Windows Change (X) to whatever COM port is being used by the board ```bash esptool --chip esp32 --port COM(X) erase_flash ``` Now download the version of the firmware you would like to install from the options below, then use the following command to program the firmware starting at address 0x1000, remembering to replace `tinypico-micropython-firmware-version.bin` with the name of the firmware you just downloaded: From then on program the firmware starting at address 0x1000: ### Linux ```bash esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 912600 write_flash -z 0x1000 tinypico-micropython-firmware-version.bin ``` ### Mac ```bash esptool.py --chip esp32 --port /dev/tty.SLAB_USBtoUART --baud 912600 write_flash -z 0x1000 tinypico-micropython-firmware-version.bin ``` ### Windows Change (X) to whatever COM port is being used by the board ```bash esptool --chip esp32 --port COM(X) --baud 912600 write_flash -z 0x1000 tinypico-micropython-firmware-version.bin ```