reTerminal E100X web flasher

Flash the latest published firmware to a Seeed Studio reTerminal E1001 / E1002 / E1003 / E1004 / E1005 (“Seeed Sticky”) directly from the browser over USB. No installer, no esptool.py.

Browser support. This page uses the Web Serial API, which is available in Chrome, Edge, Opera, and other Chromium-based browsers on desktop. Firefox and Safari are not supported.

Board Application

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How it works

Choose a board and an application above.
Click Flash and pick the reTerminal's USB serial port. The flasher asks “Erase device?”:
- Leave the checkbox unchecked to keep saved Wi-Fi credentials and portal config — only bootloader, partitions, otadata and the app are rewritten; NVS and SPIFFS are left alone.
- Check the box for a factory-fresh install — the whole flash is erased first, wiping stored config and cached data.
The device reboots into the app on its own.

First-time setup

Connect the reTerminal to your computer with a USB-C data cable.
On Windows you may need the CH340 or CP210x USB serial driver the first time. macOS and Linux ship with both.
If the browser can't see any serial port, close other tools that might be holding it (PlatformIO monitor, Arduino IDE, screen).
If the device won't accept the flash, hold the boot button while plugging the cable in, then release. Most factory-fresh boards do not need this.

What gets flashed

The flasher writes the bootloader, partition table, OTA selector, and selected application at their standard offsets. E1001-E1004 use their shared boot chain; E1005 uses its model-specific 32 MB boot chain. Every image is produced by CI from the tagged source in danpodeanu/seeed-reterminal-E100X and attached to the matching GitHub Release. No pre-shared credentials are baked in; configure Wi-Fi and any API keys per the application's README before or after flashing.

Firmware source and release notes: github.com/danpodeanu/seeed-reterminal-E100X/releases/latest