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    ADB stops working followed by failed unbricking

    VOXL SDK
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    • S
      SKA
      last edited by SKA

      I’m having trouble recovering a couple voxl2 minis (M0104). Here’s what I observed and tried so far:

      1. The minis were working normally on a reliable power supply.
      2. Minor issues occurred (in one case voxl-camera-server segfaulted, in another I tried a custom binary). This may not be relevant.
      3. Units continued to boot normally for 3–4 power cycles.
      4. On the 4th or 5th restart, they stopped booting:
        • LEDs show D1 + DS2 solid immediately.
        • Sometimes they briefly show D1 + D2 solid before going back to D1 + DS2.
        • Tried adb in those rare instances where D1 + D2 were on, didn't work
      5. Tried powering with nothing connected, same result.
      6. Tried unbricking procedure:
        • Board recognized as a QDL device (web UI and lsusb both show the QDL device).
        • Attempting “Flash Flat Build” with VOXL2 QDL Image 14.1a_1.7.8 always times out.
        • I couldn’t find a voxl2 mini specific flat build, and in the latest voxl2 mini SDK there's no ufs directory as described here

      My questions:

      • Is there a separate QDL flat build for the voxl2 mini (M0104), or should the standard voxl 2 flat builds work?
      • Since I’d prefer to recover data if possible, is there any way to get the board into fastboot or ADB without reflashing?
      • Does the LED pattern (D1+DS2 solid, sometimes briefly D1+D2) indicate anything specific about the boot state?

      Any help would be greatly appreciated, thank you!

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