Frequently Asked Questions
Can't find an answer? Community support is available.
Table of Contents
Built on the WebSerial API, ESPFlash works natively in Chrome and Edge desktop browsers.
If your device is not showing up, you may need to install USB-to-Serial drivers. Common drivers:
CP210x: Windows & Mac
Compatible with generic ESP32, S2, S3, C3, and ESP8266 serial families.
Requires a complete "Factory Firmware" (Merged Bin) with bootloader. Flashing performs a full overwrite from 0x0000.