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docs(zero3): add FAQ with boot troubleshooting based on support cases#1598

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tangzz-radxa wants to merge 1 commit intoradxa-docs:mainfrom
tangzz-radxa:support/zero3-boot-troubleshooting-20260405
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docs(zero3): add FAQ with boot troubleshooting based on support cases#1598
tangzz-radxa wants to merge 1 commit intoradxa-docs:mainfrom
tangzz-radxa:support/zero3-boot-troubleshooting-20260405

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Summary

Add comprehensive FAQ for Radxa ZERO 3 addressing common support issues reported by customers.

Why

This change addresses real support cases where users have reported issues like:

  • "Radxa Zero 3E unable to boot from micro SD card" (from recent technical support tickets)
  • Common power supply questions (5V requirement)
  • Boot troubleshooting needs
  • Default login credentials
  • System update procedures

The FAQ provides quick answers to frequently asked questions that users encounter during setup and daily use, reducing support overhead and improving user experience.

Verification

  1. Content accuracy: All technical information verified against existing Radxa ZERO 3 documentation
  2. Format consistency: Follows existing FAQ structure from other Radxa products (ROCK 5T)
  3. Bilingual support: Both Chinese and English versions added with synchronized content
  4. Practical focus: Addresses real-world issues reported in support tickets
  5. Clear warnings: Includes important safety warnings about 5V power requirement

The FAQ covers:

  • Boot troubleshooting steps
  • Power requirements (with safety warning)
  • Storage device support
  • Serial debugging instructions
  • Default credentials
  • System maintenance commands
  • Hardware information checks
  • Support resources

Add comprehensive FAQ for Radxa ZERO 3 addressing common support issues:
0. Community support reference
1. Boot troubleshooting from microSD card
2. Supported storage devices
3. eMMC installation guide reference
4. Power requirements (5V only warning)
5. Serial debugging instructions
6. Default login credentials
7. System update commands
8. Wi-Fi/Bluetooth support
9. Hardware information commands
10. Additional support resources

This addresses real support cases where users reported 'Radxa Zero 3E unable to boot from micro SD card' and other common issues.
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