Flashing Dlink 885L

After I flash with 5.4 version, my 885L does not reboot, at least I can not see power lights on. any help? thanks

Not a lot of info here. What exact file did you use to flash it? What firmware was on the device before you flashed? How did you flash the new file?

I used file openwrt-23.05.4-bcm53xx-generic-dlink_dir-885l-squashfs to flash. The firmware was 1.20 I think, not sure. But it was the most updated version.

I just flashed it again with port of internet, now power light is flashing for awhile and I dont know what I can do

What do you mean port of internet?

Have you plugged a computer into the lan port (Ethernet)? What happens?

Seen https://openwrt.org/toh/d-link/dir-885l#oem_easy_installation ?