Flash Firmware
Flash Heltec V3 directly from the browser via Web Serial API.
Web Serial not supported
Use Chrome or Edge on desktop for flashing.
1
Connect USB2
Select port3
FlashGot a V4?
The in-browser wizard writes the V3 image. The V4 revisions use different front-end chips, and this image drives the amplifier from the wrong pin on them. Take the file for your revision from the download page and flash it with esptool. Download
Firmware v4.4.16
Heltec WiFi LoRa 32 V3 (ESP32-S3)
Idle0%
Connect Heltec V3 via USB and click "Select port"