How to Unlock the Bootloader of Your Brax Device

BraX3
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This topic is dedicated to questions and discussion related to the How To Unlock the Bootloader of your Brax Device technical guide.

You can use this thread to:

  • Ask questions about specific steps in the guide
  • Share solutions or alternative approaches
  • Report issues or edge cases not covered
  • Suggest improvements or corrections to the documentation

If something in the guide is unclear or missing, letting us know here helps improve the documentation for everyone.

Thanks for contributing to the community knowledge base.

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little error

and reboot bootloader
needs to be
adb reboot bootloader

we could even say that for windows user , when you are in paltform-tools folder
./adb.exe reboot bootloader

for the testing unit, we see the Android logo in fastboot mode.

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I did the bootloader unlock on my brax3 and after it completed, it disappeared from the USB <->Ubuntu Linux connection and did the Bootloop. Tried to go into recovery mode to no avail - don’t have the factory reset option. Flashing the stock MediaTek firmware on Linux is way above my knowledge/comfort level after researching it for a few hours… I’m going to use my wife’s Window’s laptop to use one of the two MTK Flash Tools. I just hope this doesn’t indicate a weak or faulty chip. :thinking:

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Note that due to a Mediatek firmware bug, unlocking your device you will break the ability to apply updates to the phone (the b slot is effectively borked). @plamen please put A HUGE WARNING at the top of this thread!

To the issue of reflashing to correct the broken b slot (updates can’t be applied) or other issues, I wrote up a bit of a simplified SP Flash guide:

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When you say “unlocking the device” is this the bootloader or just going into accessing the dev tools?

BTW, a big thanks for all your work here - greatly appreciated.

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Accessing the dev tools and enabling “OEM unlocking” should not cause an issue in corrupting your slot b on the phone, it is only when you actually unlock the bootloader (with fastboot flashing unlock) when you will get in trouble.

PS: Thanks for the note of appreciation, it helps as our very small team is a bit overwhelmed with so many new users all at once, and of course the wifi authentication issue is way deeper than our typical workflow to get a device onboarded (but I am sure we will get there in the end).

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Excellence emerges from the ether!

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