LuCI interfaces page gives 404 on TP-Link WR850N V2 after OpenWrt install

Installing and Using OpenWrt
1

Hi,
i tried to install OpenWrt on a tp-link tl-wr850n v2 and almost everything looks like it's working except the interfaces page. When i click in the link i get redirected to http://192.168.1.1/2.0/gui/?item=cgi-bin/luci/admin/network/network and get a 404 error. i also tried going directly to http://192.168.1.1/cgi-bin/luci/admin/network/interfaces thinking maybe it was just a bad redirect, but same error.

i already tried removing and reinstalling LuCI from terminal, and i also reinstalled OpenWrt on the router like 3-4 times but still the same issue.

btw this is my first time trying to install openwrt on a router so i might be missing something obvious.

2

Did you install from the same file? Can you try to install a downgraded version?

3

What exact firmware file did you install? Did you customize it at all? Or have you installed anything post-flash?

What is the output of ubus call system board?

4

I tried these versions from the page https://openwrt.org/toh/tp-link/tl-wr850n_v2.

  1. openwrt-ramips-mt76x8-tplink_tl-wr850n-v2
  2. 3.openwrt-25.12.2-ramips-mt76x8-tplink_tl-wr850n-v2

The first one worked fine the first time, LuCI and Interfaces were working, then I had to format the router because I messed up the DNS config while testing stuff and after flashing again, now I get the 404 on Interfaces.

root@OpenWrt:~# ubus call system board
{
"kernel": "6.12.74",
"hostname": "OpenWrt",
"system": "MediaTek MT7628AN ver:1 eco:2",
"model": "TP-Link TL-WR850N v2",
"board_name": "tplink,tl-wr850n-v2",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "25.12.2",
"firmware_url": "https://downloads.openwrt.org/",
"revision": "r32802-f505120278",
"target": "ramips/mt76x8",
"description": "OpenWrt 25.12.2 r32802-f505120278",
"builddate": "1774469393"
}
}