High brick risk. A bad flash, unlock, or downgrade can permanently disable the device.
Read the specialist guide for this exact model and firmware before you touch it.
How-to
How to
Flash OpenWrt via vendor web UI, recovery/TFTP or serial per the OpenWrt Table of Hardware page (OEM stock is OpenWrt-based).
Follow the specialist sources linked on this page. If this path is a jailbreak, unlock, or flash, the specialist wiki is the how-to — we do not copy those steps here.