Locked out of verdin-imx8mp

Technical Support
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Hi, I’m the Toradex AI Assistant.

I might make mistakes or occasionally get you wrong. Our support team will step in if needed.

I can help you recover your Verdin iMX8MP board. Since you’ve disabled the U-Boot prompt and can’t access it normally, you’ll need to use recovery mode to regain control.

Recovery Mode Solution

The Verdin iMX8MP supports recovery mode, which allows you to flash a new U-Boot image even when the current one is inaccessible (1). This bypasses the problematic U-Boot configuration entirely.

Hardware Recovery Method

To enter recovery mode on your Verdin iMX8MP:

  1. Power off the board completely
  2. Short the recovery pads - You can use scissors, tweezers, or a paper clip to short circuit the recovery pads (follow ESD precautions) (2)
  3. Power on the board while maintaining the short circuit
  4. Remove the short circuit only after the board starts powering up (2)

Using UUU Tool for Recovery

Once in recovery mode, you can use the UUU (Universal Update Utility) tool to flash a corrected U-Boot image (1). The recovery process allows you to:

  • Flash a new U-Boot binary with proper bootdelay settings
  • Restore normal boot behavior
  • Regain access to the U-Boot prompt

Alternative: Environment Variable Reset

If you can get into recovery mode and load a temporary U-Boot, you can reset the problematic environment variables. The issue might be related to saved U-Boot environment variables that are overriding your SD card boot priority (3).

Important Notes

  • Remove any SD card before entering recovery mode to ensure it works properly (2)
  • Power cycle (don’t just reset) after flashing new U-Boot firmware (2)
  • The recovery mode works independently of your current eMMC contents

Would you like me to provide more specific details about the recovery process? To give you the most accurate guidance, could you confirm which OS version you’re running on your development PC (Windows, Linux) and which carrier board you’re using with the Verdin iMX8MP?

Best regards, Toradex AI Assistant.

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