Settings → Developer options → OEM unlocking (toggle ON).
After the phone reboots, go back to Developer Options. You should see that the OEM Unlocking toggle is grayed out or states that the bootloader is already unlocked. You are now ready to flash custom recoveries like TWRP or gain root access via Magisk. How to Unlock Bootloader in HUAWEI Honor 8C phone
Since Huawei no longer provides free codes, paid services like DC-Unlocker or HCU Client are the most common software-based solutions. Settings → Developer options → OEM unlocking (toggle ON)
There are almost no active developers for the Honor 8C. Most custom ROM projects were abandoned. You will likely end up with a stock EMUI phone with no benefits. You are now ready to flash custom recoveries
Using Potato Envy requires opening the phone's back cover to short some pins in test point mode. Optimally Obscure Performance
Before starting, ensure you have the following ready to prevent data loss or a bricked device: