HandShakeTec

Watch Flasher

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Flash Firmware to Your Lilygo T-Watch S3

This page allows you to flash custom firmware that you’ve downloaded from the Watch Configuration page directly to your Lilygo T-Watch S3 smartwatch.

How to Use

  1. Download firmware from the Watch Configuration page
  2. Connect your T-Watch S3 to your computer via USB cable
  3. Select the firmware file you downloaded using the file picker below
  4. Click Flash once the device is detected and verified
  5. Wait for the flashing process to complete (~30 seconds)
  6. Verify your watch has the new firmware

1. Select Firmware File

Choose the .bin firmware file you downloaded from Watch Configuration.

2. Detect Device

Click to detect and connect to your T-Watch S3 via USB.

Port: -
Chip: -
Variant: -
MAC Address: -

3. Flash Firmware

Click to write the selected firmware to your device.

Flashing firmware... This takes about 30 seconds.

0%

Initializing...

Troubleshooting

  • Device not detected? Make sure your T-Watch S3 is connected via USB and powered on.
  • Wrong chip detected? The device must be an ESP32-S3 variant QFN56. Check your device.
  • Flashing failed? Try disconnecting and reconnecting your device.
  • Still having issues? Check the browser console (F12) for error messages.