PotatoNV VS Huawei-Bootloader-Unlocker

You could try PotatoNV, but it requires disassembly or another way to access USB COM 1.0 mode (Sigma has "Software testpoint", but sigma costs a lot).

You take your phone apart, get it into testpoint, use potatonv, write locks.

And while yes, it is possible to unlock some devices, the custom rom scene is basically dead at this point. Some old Huawei phones were supported by LineageOS until 18.1 IIRC, but that's about it.

The only open source solution i found was https://github.com/mashed-potatoes/PotatoNV is still in development and looks unmaintained for months.

Unlock bootloader with potatonv, then install custom rom of your choice. But yes, this takes some effort.

Well OP is in luck because there is a free method https://github.com/mashed-potatoes/PotatoNV

I believe you can with this but it needs you to take your phone apart https://github.com/mashed-potatoes/PotatoNV/blob/master/README.md

Source code: https://github.com/Martazza/Huawei-Bootloader-Unlocker/blob/master/huawei_bootloader_unlocker.c

I found some GitHub tool: https://github.com/Martazza/Huawei-Bootloader-Unlocker

I was looking for a way to unlock my Huawei device bootloader, and I found 2 brute force programs on GitHub repos : huawei-honor-unlock-bootloader from SkyEmie, and Huawei-Bootloader-Unlocker from Martazza.