DEVICE TOOLS / USB

Flash your
XIAO.

Install a firmware build on a Seeed XIAO ESP32-S3 directly from a supported desktop Chromium browser. No separate flasher app required.

Firmware flashing can erase data

Use firmware built for the exact board. This tool does not enable radio transmission; MissionLink RF stays disabled until radio wiring, configuration, security, and Canadian compliance are verified. Never flash files from an untrusted source.

Using an iPhone or iPad?

This page opens on iOS 16.7+, but iOS Safari does not support the USB serial API required to write firmware. A native iOS flasher will need a firmware-side BLE OTA update feature before it can safely install builds.

01 / CONNECT

Connect your board

⌁

Use a USB data cable. If the board is not detected, hold BOOT while connecting it, then release BOOT.

No device connected

02 / FIRMWARE

Select build files

↥

The latest MissionLink build is loaded by default from this site's own firmware build. You can still replace individual files with a different build if needed.

Loading official build…

Bootloader 0x0000 · requiredLoading official build… Partition table 0x8000 · requiredLoading official build… Boot app 0xE000 · optionalLoading official build… Application 0x10000 · requiredLoading official build…

These must be separate binaries for this layout—not a merged image. Files are read locally in your browser and are not uploaded.

03 / INSTALL

Flash & verify

✓

Erase all flash firstRemoves existing settings and stored data. Leave unchecked unless you specifically need a clean install.

Waiting to flash0%

Keep the board plugged in during flashing. Do not close this tab or disconnect USB until the operation finishes. The flasher reports write progress; a successful write is not proof that the firmware works on your specific hardware.

04 / LOG

Flasher output

Ready. Connect a board to begin.

Flash yourXIAO.

Connect your board

Select build files

Flash & verify

Flasher output

Flash your
XIAO.