Please Unlock It First 39--: Failed -remote 39-flashing Lock Flag Is Locked.

Use this variant if you are targeting core hardware files like the bootloader layout or partition tables. Step 4: Confirm Unlocking on the Phone Hardware

Use this command if you are dealing with legacy Android architectures. Command C (Critical Partitions) fastboot flashing unlock_critical Use code with caution.

Newer Android devices often have a "userspace fastboot" mode called fastbootd. You can sometimes access it by booting into the standard bootloader and using the volume buttons to navigate to an option labeled "Enter fastboot" or by using the command fastboot reboot fastboot [8†L20-L21]. Flashing in fastbootd might bypass certain restrictions encountered in the normal bootloader mode.

At the deepest software level, a bug in the flashing program or the device's bootloader can itself trigger this error. A documented example in U-Boot (a common bootloader) was a when trying to call flash lock methods on SPI NOR flashes that didn't properly support them. This could cause the bootloader to crash or behave unpredictably, generating this lock-related error as a consequence. Use this variant if you are targeting core

The error occurs when you attempt to flash firmware or partitions to an Android device while its bootloader is still in a "locked" state. Simply enabling "OEM Unlocking" in your phone's settings is not enough; you must also execute the specific unlock command through Fastboot. Step 1: Preparation (In Android)

Once your phone displays the Fastboot/Bootloader screen, run the standard unlock command: fastboot flashing unlock Use code with caution.

Once the software permission is granted, you must put the phone into Fastboot mode and send the hardware unlock command. Power off your phone completely. Newer Android devices often have a "userspace fastboot"

failed - remote 39 - flashing lock flag is locked. please unlock it first

If your device is locked to a specific carrier (like Verizon or T-Mobile in the US), unlocking the bootloader might be impossible. Carriers often disable the "OEM Unlocking" option. In such cases, your only recourse is to contact your carrier to request a SIM unlock or, if possible, to ask about their bootloader unlocking policy [12†L12-L15].

Toggle on (Enter your PIN/Password if prompted). Step 2: Boot into Fastboot Mode At the deepest software level, a bug in

If you are trying to unbrick a device, you may need to look for flashing tools specific to your device's processor (Qualcomm/MediaTek), which can sometimes flash images while bypassing the standard bootloader check.

It sounds like you’re seeing an error message from a printer, copier, or multi-function device (like a Canon, HP, Xerox, or Ricoh), rather than an issue with creating a paper document in software.

Yes, you can. To relock your bootloader, boot into fastboot mode and use the command fastboot flashing lock [10†L25-L26][14†L12]. Be aware that relocking the bootloader will likely wipe your data again and may cause the device to fail to boot if you're using a custom operating system.