micbanand / potatonv Goto Github PK

Get binaries for Windows in the releases section. For Linux or macOS consider using the PotatoNV-crossplatform.

Just follow this video guide: https://www.youtube.com/watch?v=YkGugQ019ZY.

Even before creating PotatoNV, @TishSerg discovered that unlock key can be rewritten with the SHA256 hash of the desired key to the USRKEY property. However, to access NVME (a raw partition that stores stuff like serial number, device traits, etc.), a user should flash custom recovery or gain temporary root privileges. But both methods are complex and are not guaranteed to work. After researching the legacy bootloader of some Huawei devices, I've found a nve command, which allows to read or write any property in the NVME partition. Of course, this command requires an unlocked bootloader. So it remains to find a way to quickly unlock the bootloader. The way out is quite simple - use the bootloader from the board software.

The program uploads a special "USB bootloader" (exported from the board software) through the DOWNLOAD_VCOM mode. VCOM is smth like EDL on Qualcomm devices: it can be triggered by a system failure or by shorting testpoint. After uploading the bootloader, the device should switch to the fastboot mode. The "USB bootloader" has an important trait: it's unlocked out-of-the-box, so it allows to execute any command.

So, we're just going to send a command through the USB bulk interface to write SHA256 hash to USRKEY and reboot the device.

That's it.

It would be much appreciated if you want to make a small donation to support my work!

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All bootloaders are Huawei Technologies Co., Ltd. property.

This project is not affiliated with Huawei.

Unlock tool for Huawei devices on Kirin SoC. Copyright (C) 2020 mashed-potatoes

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.