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    UIFlow Desktop: “Upload code failed, device offline” error with M5Stack Core2 (Windows 10)

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    • MorleM
      Morle
      last edited by

      I would like to program my M5Stack Core2 ESP32 using the UIFlow Desktop Version on Windows 10.

      2026-03-05_08-52-57.png

      My progress so far:

      1.) Installed the CP2104 USB-to-UART Bridge Controller driver on my computer.

      2.) Connected the M5Stack Core2 ESP32 to my computer via USB.

      3.) Flashed UIFlow 2.0 Firmware (v2.4.2-Core2) using the M5Burner tool.

      2026-03-05_08-58-47.png

      4.) Started UIFlow-Desktop-IDE.exe.

      5.) When trying to upload code, I get the following error:

      ERROR: Upload code failed, maybe your device is offline check it and retry.

      Could someone help me understand what I might be doing wrong or what I should check next?

      2026-03-05_09-05-52.png

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