Mi Router 4C's Debricking

Hi guys, my Mi Router 4C (MediaTek MT7628AN) was with 21.02.0-rc1 OpenWRT then I upgraded the router to 21.02.1. It was installed successfully. But after it, I need to change back to original firmware, so I flashed miwifi_r4cm_firmware 3.0.16_ENG.bin but after for a while, Orange LED light shows up, it starts to blink, it takes at least an hour so I tried to hardset with reset button. But now after it, the Orange LED light keep blinking. I cannot access to both 31.1 and 1.1. via WAN and LAN, How I can debrick this router? Thanks guys.