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Introduction

All F3 boards (SPracingF3, SPracingF3Evo, PikoBLX, tinyFISH FC...) comes usually with BetaFlight firmware flashed on it.

We need to flash LibrePilot bootloader before firmware update using GCS.

After you flashed the bootloader, the board does nothing because there is no firmware running, only a slow fading led blinking.

Steps for firmware update:

• Disconnect board from the USB port and disconnect external power (Lipo) if any.,
• Click the 'Upgrade&Erase' button. (Board still disconnected)
• Connect board to the USB port

The board will:

• be recognized just after connected to the USB port,
• flashed using the appropriate firmware for the board (according to the bootloader you flashed previously),
• reboot and erase settings,
• and finally remains connected, running the new firmware that matches your GCS.

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