TL-WA855RE bricked when trying to go back to OEM firmware

I tried to install OpenWRT on the tl-wa855re wifi extender but I found it unstable so I decided to go back to stock firmware, I downloaded it and I can't flash the firmware from OpenWRT flash WebGUI so I decided to flash it using ssh,
I did these steps:
1- download the stock firmware
2- copied it to tmp directory to the extender using scp fw.bin root@
3- flashed it using cd /tmp then mtd -r write /tmp/fw.bin firmware
then the extender don't give me a DHCP and started boot looping and I can't access it using tftpd and get the required file

so any fix please I need this extender

Where did you get those instructions?

Which one did you download?