Hey there, let's tackle your two Motorola-related questions clearly and practically:

Absolutely—yes, flashing the wrong firmware can brick your Motorola device, though the severity varies:

• Soft brick: This is the more common scenario. Your phone might bootloop, fail to load the OS, or lose cellular connectivity (thanks to mismatched baseband firmware). In most cases, this can be fixed by re-flashing the correct firmware via fastboot.
• Hard brick: This occurs if you flash firmware incompatible with your device's bootloader version, or cross-flash firmware from a completely different model (not just different regions). In the worst cases, the device won't power on at all, and fixing it may require specialized tools or professional help.
  Even flashing a cross-region firmware for the same model (like XT1064) can cause issues—for example, LTE bands might not match your local network, leading to poor or no signal, even if the phone boots normally.

Let's split this into two parts to solve it step by step:

Fixing Recovery Loading Failures #

Since you're new to ADB/mfastboot, start with these basic checks:

• Verify Motorola Drivers: Make sure you've installed the official Motorola USB drivers. When your phone is in fastboot mode (hold Power + Volume Down while off), check Device Manager on Windows—there should be no yellow exclamation marks next to the Motorola device. If there are, reinstall the drivers.
• Use the Right mfastboot Tool: Motorola devices require the dedicated mfastboot utility (not standard fastboot). Ensure you're using a compatible version, then run the correct command to temporarily boot the recovery:

  mfastboot boot your-recovery-file.img
  

  (Note: Use boot instead of flash first to test if the recovery works without permanently overwriting anything.)
• Check Recovery Compatibility: The recovery image must be specifically built for the XT1064. Using a recovery from a different Motorola model will almost certainly fail to load.

Identifying Your XT1064's Region #

To avoid flashing the wrong firmware, use these reliable methods:

• Check IMEI Details: Go to Settings → About Phone → Status Information to find your IMEI. Enter this IMEI on Motorola's official support page to get your device's exact region and model variant—this is the most accurate way.
• Leverage Your Signal History: You mentioned the phone worked fine in Mexico with proper signal. Since niimx corresponds to the Mexican variant, this is the safest bet for your firmware—its baseband is optimized for Mexican cellular bands, so you'll avoid signal issues.
• Check Software Version: In Settings → About Phone, look for the "Software Version" or "Build Number"—it will usually include a region code (like niimx) that directly maps to your device's variant.

Final Pre-Flash Tips #

• Always unlock your bootloader first (Motorola requires an official unlock code from their site) before attempting any flashing.
• Backup all your data—flashing firmware will wipe your phone's storage.
• If you're still unsure, temporarily boot the niimx recovery first (using the mfastboot boot command) to confirm it loads successfully before flashing the full firmware.

内容的提问来源于stack exchange，提问作者LuxBellum