Open Infrastructure

h1. How to configure ubiquiti network equipment

h2. General steps

* Reset the device

* ssh into it (username: ubnt, password: ubnt)

* Setup a password

h2. Upgrading most ubiquiti access points

* Dowload the latest firmware from https://www.ui.com/download

* scp it to the device as /tmp/fwupdate.bin

* ssh into the device, run @syswrapper.sh upgrade2 &@ (seems to need to be backgrounded)

h2. Enabling ssh access without a password

* Add your public RSA (ed25519 don't work) to /etc/dropbear/authorized_keys

h2. Configuring Wifi

* Download the "unifi network" app

* Go to account->standalone devices : wait for the aps to show up

h2. Installing OpenWRT on AP Lite/LR/Pro

Stock ubiquiti does not work in IPv6 only environments. So replacing the stock firmware with OpenWRT makes them usable.

* Update ("downgrade") to firmware version 3.7.58

** https://dl.ui.com/unifi/firmware/U7PG2/3.7.58.6385/BZ.qca956x.v3.7.58.6385.170508.0957.bin

* Get the latest openwrt image

** Check https://openwrt.org/toh/ubiquiti/unifiac

* Use mtd to replace it 

* Use mtd to erase kernel1

* Set the boot loader to 0

** write a 0 o the mtd partition "bs"

Sample session (don't copy and paste)

<pre>

[20:14] manager:~% wget http://downloads.openwrt.org/releases/19.07.3/targets/ath79/generic/openwrt-19.07.3-ath79-generic-ubnt_unifiac-lite-squashfs-sysupgrade.bin

[20:14] manager:~% scp openwrt-19.07.3-ath79-generic-ubnt_unifiac-lite-squashfs-sysupgrade.bin ubnt@[2a0a:e5c0:13:0:f29f:c2ff:fef3:cbe4]:

[20:14] manager:~% ssh ubnt@2a0a:e5c0:13::f29f:c2ff:fef3:cbe4    

BZ.v3.7.58# mtd write openwrt-19.07.3-ath79-generic-ubnt_unifiac-lite-squashfs-sysupgrade.bin kernel0

BZ.v3.7.58# mtd write openwrt-19.07.3-ath79-generic-ubnt_unifiac-lite-squashfs-sysupgrade.bin kernel0

Unlocking kernel0 ...

Writing from openwrt-19.07.3-ath79-generic-ubnt_unifiac-lite-squashfs-sysupgrade.bin to kernel0 ...     

BZ.v3.7.58# mtd erase kernel1

Unlocking kernel1 ...

Erasing kernel1 ...

BZ.v3.7.58# cat /proc/mtd 

dev:    size   erasesize  name

mtd0: 00060000 00010000 "u-boot"

mtd1: 00010000 00010000 "u-boot-env"

mtd2: 00790000 00010000 "kernel0"

mtd3: 00790000 00010000 "kernel1"

mtd4: 00020000 00010000 "bs"

mtd5: 00040000 00010000 "cfg"

mtd6: 00010000 00010000 "EEPROM"

BZ.v3.7.58# dd if=/dev/zero bs=1 count=1 of=/dev/mtd4

1+0 records in

1+0 records out

BZ.v3.7.58# 

BZ.v3.7.58# reboot 

</pre>