Browser-Based Flasher

Update Your
Controller Firmware.

Flash the latest AFTERGLO firmware straight from Chrome or Edge over a USB-C cable. No software to install, no drivers required.

Something went wrong and nothing was written to your controller. Please try again, or contact us.
Done — your controller is restarting with the new firmware.

Instructions

  • Use Chrome or Edge on a desktop or laptop computer
  • Connect your controller to this computer with a USB-C cable
  • Click Install, then pick your controller from the list your browser shows
  • Leave it plugged in until it finishes
No device found?

When you click Install, your browser opens its own small window listing connected USB devices — your controller usually appears as "USB Serial" or "CP210x". If the list is empty: check you're using a data USB-C cable rather than a charge-only one, try a different USB port, and close any other program that might be using the port. Some boards need you to hold BOOT, tap RST, then release BOOT before they show up.

Will this erase my settings?

No. This only replaces the running firmware — the same thing the AFTERGLO app does when it updates your controller. Your Wi-Fi credentials, presets, and pixel layout are untouched.

Questions

Firmware FAQ.

Is this really the same firmware the app installs?

Yes. This page fetches the exact same release feed the AFTERGLO app checks, so it's never behind. Both check the file's checksum before trusting it.

Why does the Wi-Fi option make me upload the file myself?

Browsers block a secure page like this one from directly talking to a plain, unencrypted address on your home network — that's a security protection, not something we can turn off. Verifying and downloading the file for you is what this page can safely do over Wi-Fi; the last step of handing it to your controller has to happen on your controller's own page. USB skips this entirely since your browser talks straight to the controller.

Does flashing over USB erase my settings?

No. It only rewrites the two firmware slots your controller boots from — never the bootloader, never your saved settings. Wi-Fi credentials, presets, and pixel layout are stored separately and untouched.

Does this send anything about my controller to AFTERGLO?

No. This page only downloads a public firmware file and checks its checksum in your browser — it never talks to your controller directly, and we don't learn anything about your device from using it.