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Troubleshooting

Zen not detected by the browser

Six checks in order when the browser cannot see your Cronus Zen: browser support, another app holding it, the right USB port, cable, mode, and bootloader.

4 min read

Run these checks in order

  1. Use desktop Chrome or Edge. WebHID is not available in every browser or in an in-app Discord browser.
  2. Close Zen Studio and every other tab that may already own the device.
  3. Use the Zen's right-side programming port for the Vera installer.
  4. Try a known data cable and another USB port. Power without detection usually means a charge-only or damaged cable.
  5. Unplug the Zen for ten seconds, reconnect it in normal mode, reload the page, and click Connect again.
  6. If the OLED shows bootloader mode, finish or exit the firmware update and replug normally.

When the browser picker opens, select the entry named Cronus Zen. If no picker appears, the browser or page permission is the problem. If a picker appears but no device is listed, the port, cable, mode, or another open application is the problem.