For the LilyGo T-Display S3 hardware Nostr signer used with
flink.club and the LNbits-NSD-compatible
extensions (horse, nos2x-nsd).
Works in Chrome or Edge on desktop only — flashing uses the
WebSerial API, which Safari and Firefox don't support. Not available on
mobile browsers.
Your browser doesn't support WebSerial — open this page in Chrome or Edge on a computer.This page must be served over HTTPS to flash a device.
Loading firmware info…
Before you plug in
Use a USB-C cable that carries data (not a charge-only cable).
Click Connect device & install, then pick the board from
the Chrome port picker.
A normal reflash keeps your key and PIN — the encrypted
key vault lives in a separate NVS partition the flasher doesn't touch.
The install dialog has an "Erase device" option. Only tick
it if you want a full factory reset — that wipes the key vault and everything
else on the board, permanently.
First flash on a factory board
If the board has never run this firmware, you may need to hold the
BOOT button while plugging in the USB cable (this forces the
ROM bootloader), then press reset once flashing finishes.