Flashed OpenWRT on Ubiquiti UAP-AC-LR

[numToStr]

Received mine yesterday. Unboxed it today and flashed OpenWRT without any issue (didn’t even think of doing speedtest on stock fw), but welp, no can do now. If anyone is interested, here are the steps I followed:

• Connect AP to my ISP router.
• Used WiFiman App to get the assigned IP of the AP. (the app highlights the AP at the top)
• Used ssh ubnt@<ip_address> to login. Password: ubnt.
• Then used the dd method to flash the openwrt.

Why dd method?

For some reason, my AP didn’t had mtd command. So had to use dd to flash the image.

UAP-AC-LR-BZ.6.7.35# info

Model:       UAP-AC-LR
Version:     6.7.35.15586
MAC Address: fc:ec:da:8c:d0:07
IP Address:  192.168.5.xx
Hostname:    UAP-AC-LR
Uptime:      1333 seconds
NTP:         Synchronized
Status:      Timeout (http://unifi:8080/inform)

UAP-AC-LR-BZ.6.7.35# mtd write /tmp/openwrt-24.10.4-ath79-generic-ubnt_unifiac-lr-squashfs-sysupgrade.bin kernel0
-ash: mtd: not found

Here are the LAN speed tests. I have AP and PC close to each other on my desk:

1. librespeed
   
   
2. Copying from NAS to host
   
   

And this is when client is beyond 2 walls (each is 1 brick thick)

Note:

• Flashing OpenWRT image using dd might take a while, and there is no progress bar for it, so be patient and let it finish.
• After flashing & reboot, the white led starts blinking, let it finish. Once finished, the light turns off, but the AP is still on and functional. Connect the LAN from the POE Injector to your PC, and assign a static IP like 192.168.1.10 to your PC, then visit 192.168.1.1 for openwrt dashboard.
• As I said, LEDs were off by default. Use these settings to enable them. FYI, only the white LED worked for me, purple seems to be non-functional, dunno why.

[kuduku]

Can you tell your connection speeds/plan to get a perspective/comparision

[numToStr]

I don’t think that would had any effect on the LAN speed test.

Anyway here is my current network setup:

• A sh*tty GPON ISP Router, on paper i have 150mbps plan but never saw it go down below 200mbps.
• UAP LR is connected directly to ISP Router.
• My PVE node and NAS is connected to Linksys MX4200 (AP Mode), which then connected to router.

[testingguy]

This is what I needed ordered myself one will flash openwrt too

How as the process any caveats i need to look out for

[numToStr]

any caveats i need to look out for

Not really. The only thing that was a bit meh was finding the AP’s IP address. But it could be me, as I don’t have any other Ubiquiti stuff, nor can I access the ISP Router’s dashboard. Also, I didn’t try assigning a static IP at the start, just like written in dd method steps, and straight went to find the IP in WiFiman. In the end, everything worked out.

PS: I’ve added a few notes in the OP that one might need to be aware of.

[testingguy]

flashed mine too followed this guide from @Safcr7

Flash OpenWrt on UniFi UAP-AC-LR | Step-by-Step 2026 Guide

[Safcr7]

Ayy thanks bro!!