Firefly Firmware Uploader

Works in Chrome / Edge (WebSerial). Plug in the Wemos D1 Mini over USB, then Connect.

Connect Flash firmware only Flash firmware + filesystem

Images are served from this site: firmware/firmware.bin (flash @ 0x0) and firmware/littlefs.bin (flash @ 0x300000). After each PlatformIO build, overwrite them with .pio/build/d1_mini/firmware.bin and .pio/build/d1_mini/littlefs.bin.

Firmware-only keeps the device config. Firmware + filesystem wipes everything (panels, rules, settings) like uploadfs — back up from the dashboard first.