Good morning,
None of the Openwrt installation methods work on Ubiquiti unfi AP AC PRO Gen2 firmware version (6.5.28.14491)
help me pelasse
Care to explain where it fails. There are multiple steps and doesn’t work doesn’t help.
Good morning,
Thanks for your help
the mtd command does not work in my FIRMWARE version 6.5.28.14491.
mtd write /tmp/openwrt-22.03.5-ath79-generic-ubnt_unifiac-pro-squashfs-sysupgrade.bin
-ash: mtd: not found
Wrong firmware version. Your Unifi firmware is locking you out.
By the numbers:
- factory reset the unifi ap and make sure you can
ping&sshinto192.168.1.20 - download the unifi firmware version 3.7.58 for your device from Unifi and rename it
mv BZ*.bin ubnt.binto your PC. - download the correct OpenWrt firmware for your device to your PC.
- Copy the Unifi Firmware from your Linux-PC to the Unifi device:
scp ubnt.bin ubnt@192.168.1.20:/tmp/, then issuefwupdate.real -m /tmp/ubnt.binand let your Unifi device reboot (On reboot, make sure your Unifi device now shows version 3.7.58).
Once you get your Unifi device reverted to firmware version 3.7.58, you should be able to apply the OpenWrt sysupgrade.bin and continue to the following steps from the wiki.
Here is the result. it does not go through. apparently they have defined a list of accepted firmware
UAP-AC-Pro-Gen2-BZ.6.5.28# fwupdate.real -m /tmp/ubnt.bin
Invalid version 'BZ.qca956x.v3.7.58.6385.170508.0957'
That’s a stopper!
Odd. Just installed OpenWrt stable on an UAP AC Lite running Unifi Firmware v6.2.49 from 2022-12-14, and not hearing other similar situations to yours.
Have you tried reverting to an earlier Unifi Firmware ie. 6.2.35 and then if that is successful trying to get to 3.5.78?
YES I tried version 4.XXXX. but the same thing
Try a previous version relatively recent to your current version. If they are limiting regressions, 4.XXXX may be included as no longer supported.
Just to state the obvious caveats, make sure the 3.7.58 md5sum verifies, and that ls /tmp/* lists only a single entry ubnt.bin
No, I don't have several ubnt.bin files, but I do have a temp folder (/temp/temp) in /temp
UAP-AC-Pro-Gen2-BZ.6.5.28#ls /tmp/*
ls: /templs: No such file or directory
/tmp/BZ.qca956x_6.2.35+14043.220812.1940.bin /tmp/last-dump.core /tmp/resolv.conf.auto /tmp/system.cfg
/tmp/TZ /tmp/rc.txt /tmp/running.cfg
/tmp/default.cfg /tmp/resolv.conf /tmp/sysinit.txt
/tmp/etc:
TZ crontabs host.conf inittab modules.d.sysinit profile shadow sysupgrade.conf
ath device_info hostapd iproute2 mtab protocols shells uap-sysctl.conf
atheros.conf diag.sh hosts lldpd.conf openwrt_release rc.button snmp uci-defaults
banner dnsmasq.conf hotplug-preinit.json localtime openwrt_version rc.common ssl udhcpc
banner.failsafe dropbear hotplug.d login.defs os-release rc.d startup.list udhcpc_services
board.d ethertypes hotplug.json marks.cfg passwd rc.local sysctl.conf version
board.info fstab httpd modules-boot.d persistent resolv.conf sysctl.d xattr.conf
config group init.d modules.d preinit services sysinit
/tmp/lib:
ebtables
/tmp/lock:
fw_printenv.lock
/tmp/log:
lastlog messages messages.old wtmp
/tmp/run:
booted logread.1.pid running_module_para.conf system.managed uplink_wds wifi0.outdoor
dhcpc.last_state mcad.0.pid schedules system.mesh vapbridge.ath1 wifi0.ssids
download_firmware.failed mcad.checkin ssh_trace_count system.ssh vapid.ath0 wifi0_devnames
dropbear.pid mcad.isolated stahtd system.state vapid.ath1 wifi1.bw
dropbear_rsa_host_key mesh.status system.analytics.coredump system.uplink vapusage.ath0 wifi1.ch
fingerprint module_para.conf system.analytics.mode system.uplink.prev vapusage.ath1 wifi1.eu
hostapd ntpd.pid system.controller ubnt_protocol.info vlans wifi1.mode
ipold.br0 peer_aps.lock system.controller.fqdn ubus.sock wifi0.bw wifi1.outdoor
ipready.br0 qca-wifi-modules-load system.controller.ip udhcpc.br0.pid wifi0.ch wifi1_devnames
lldpd.socket radio_devnames system.inform uplink_bridge wifi0.eu wlan_devnames
lldpd.socket.lock report system.internet uplink_eth wifi0.mode wpa_vport_ath1.conf
/tmp/shm:
/tmp/state:
/tmp/sysinfo:
board_name model
/tmp/tmp:
/tmp/utermd:
0 1 2 3 4 5 6 7
UAP-AC-Pro-Gen2-BZ.6.5.28#
mv /tmp/BZ*.bin ubnt.bin
ls /tmp/ubnt.bin
- should return
ubnt.bin
fwupdate.real -m /tmp/ubnt.bin
UAP-AC-Pro-Gen2-BZ.6.5.28# fwupdate.real -m /temp/ubnt.bin
Couldn't open image file: /temp/ubnt.bin!
UAP-AC-Pro-Gen2-BZ.6.5.28#
/tmp/ubnt.bin
I managed to come to version 6.2.49. version 3.7.58 still refuses
UAP-AC-Pro-Gen2-BZ.6.2.49# fwupdate.real -m /tmp/ubnt.bin
Invalid version 'BZ.qca956x.v3.7.58.6385.170508.0957'
UAP-AC-Pro-Gen2-BZ.6.2.49#
ls -l /tmp/*
UAP-AC-Pro-Gen2-BZ.6.2.49# ls -l /tmp/*
-rw-r--r-- 1 ubnt root 4 Jan 1 1970 /tmp/TZ
-rw-r--r-- 1 ubnt root 3939 Jan 1 1970 /tmp/default.cfg
lrwxrwxrwx 1 ubnt root 4 Jan 1 1970 /tmp/etc -> /etc
-rw------- 1 ubnt root 0 Dec 1 02:40 /tmp/last-dump.core
-rw-r--r-- 1 ubnt root 24011 Dec 1 02:40 /tmp/rc.txt
lrwxrwxrwx 1 ubnt root 21 Jan 1 1970 /tmp/resolv.conf -> /tmp/resolv.conf.auto
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 /tmp/resolv.conf.auto
-rw-r--r-- 1 ubnt root 3939 Jan 1 1970 /tmp/running.cfg
-rw-r--r-- 1 ubnt root 10502 Jan 1 1970 /tmp/sysinit.txt
-rw-r--r-- 1 ubnt root 3939 Jan 1 1970 /tmp/system.cfg
-rw-r--r-- 1 ubnt root 7764011 Jun 10 2023 /tmp/ubnt.bin
/tmp/lib:
drwxr-xr-x 2 ubnt root 40 Jan 1 1970 ebtables
/tmp/lock:
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 fw_printenv.lock
/tmp/log:
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 lastlog
-rw------- 1 ubnt root 157279 Dec 1 03:07 messages
-rw------- 1 ubnt root 204857 Dec 1 02:55 messages.old
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 wtmp
/tmp/run:
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 booted
-rw-r--r-- 1 ubnt root 0 Dec 1 02:49 download_firmware.failed
-rw-r--r-- 1 ubnt root 5 Dec 1 02:40 dropbear.pid
-rw------- 1 ubnt root 805 Jan 1 1970 dropbear_rsa_host_key
-rw-r--r-- 1 ubnt root 60 Jan 1 1970 fingerprint
drwxr-xr-x 2 ubnt root 80 Dec 1 02:40 hostapd
-rw-r--r-- 1 ubnt root 13 Dec 1 02:40 ipold.br0
-rw-r--r-- 1 ubnt root 13 Dec 1 03:07 ipready.br0
srwxr-xr-x 1 ubnt root 0 Jan 1 1970 lldpd.socket
-rw-r--r-- 1 ubnt root 4 Jan 1 1970 logread.1.pid
-rw-r--r-- 1 ubnt root 4 Dec 1 02:40 mcad.0.pid
-rw-r--r-- 1 ubnt root 5 Dec 1 03:07 mcad.checkin
-rw-r--r-- 1 ubnt root 4 Dec 1 02:41 mcad.isolated
-rw-r--r-- 1 ubnt root 193 Dec 1 03:07 mesh.status
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 module_para.conf
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 ntpd.pid
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 peer_aps.lock
-rw-r--r-- 1 ubnt root 104 Jan 1 1970 qca-wifi-modules-load
drwx------ 2 ubnt root 40 Jan 1 1970 report
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 running_module_para.conf
drwxr-xr-x 2 ubnt root 80 Jan 1 1970 schedules
-rw-r--r-- 1 ubnt root 3 Dec 1 02:54 ssh_trace_count
drwxr-x--- 2 ubnt root 40 Dec 1 02:40 stahtd
-rw-r--r-- 1 ubnt root 2 Jan 1 1970 system.analytics.coredump
-rw-r--r-- 1 ubnt root 2 Jan 1 1970 system.analytics.mode
-rw-r--r-- 1 ubnt root 11 Dec 1 03:07 system.controller
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 system.controller.fqdn
-rw-r--r-- 1 ubnt root 0 Dec 1 03:07 system.controller.ip
-rw-r--r-- 1 ubnt root 7 Dec 1 03:07 system.inform
-rw-r--r-- 1 ubnt root 1 Dec 1 03:07 system.internet
-rw-r--r-- 1 ubnt root 12 Dec 1 03:07 system.managed
-rw-r--r-- 1 ubnt root 3 Jan 1 1970 system.mesh
-rw-r--r-- 1 ubnt root 5 Dec 1 02:40 system.ssh
-rw-r--r-- 1 ubnt root 6 Dec 1 02:40 system.state
-rw-r--r-- 1 ubnt root 5 Dec 1 03:07 system.uplink
-rw-r--r-- 1 ubnt root 5 Dec 1 03:07 system.uplink.prev
-rw-r--r-- 1 ubnt root 0 Jan 1 1970 ubnt_protocol.info
srw-rw-rw- 1 ubnt root 0 Jan 1 1970 ubus.sock
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 udhcpc.br0.pid
-rw-r--r-- 1 ubnt root 4 Jan 1 1970 uplink_bridge
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 uplink_eth
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 uplink_wds
-rw-r--r-- 1 ubnt root 4 Jan 1 1970 vapbridge.ath1
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 vapid.ath0
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 vapid.ath1
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 vapusage.ath0
-rw-r--r-- 1 ubnt root 7 Jan 1 1970 vapusage.ath1
-rw-r--r-- 1 ubnt root 2 Jan 1 1970 vlans
-rw-r--r-- 1 ubnt root 3 Jan 1 1970 wifi0.bw
-rw-r--r-- 1 ubnt root 2 Jan 1 1970 wifi0.ch
-rw-r--r-- 1 ubnt root 9 Jan 1 1970 wifi0.mode
-rw-r--r-- 1 ubnt root 13 Jan 1 1970 wifi0.ssids
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 wifi0_devnames
-rw-r--r-- 1 ubnt root 3 Jan 1 1970 wifi1.bw
-rw-r--r-- 1 ubnt root 2 Jan 1 1970 wifi1.ch
-rw-r--r-- 1 ubnt root 10 Jan 1 1970 wifi1.mode
-rw-r--r-- 1 ubnt root 5 Jan 1 1970 wifi1_devnames
-rw-r--r-- 1 ubnt root 10 Jan 1 1970 wlan_devnames
-rw-r--r-- 1 ubnt root 24 Dec 1 03:07 wpa_vport_ath1.conf
/tmp/shm:
/tmp/state:
/tmp/sysinfo:
-rw-r--r-- 1 ubnt root 8 Jan 1 1970 board_name
-rw-r--r-- 1 ubnt root 32 Jan 1 1970 model
/tmp/tmp:
/tmp/utermd:
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 0
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 1
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 2
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 3
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 4
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 5
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 6
drwxr-xr-x 2 ubnt root 40 Dec 1 02:40 7
UAP-AC-Pro-Gen2-BZ.6.2.49#
The new firmware does not allow downgrading lower than the version shipped or last installed, apparently not even with TFTP. I encountered this with a Nanostation AC loco. Fortunately on that it was easy to open the case and attach serial. Models like the AC Pro Gen2 are glued together though.
The best solution would be for someone to prepare a patch for fwupdate.real in the new versions. This will likely have to be done with every new version.
Hi Mike/@mk24
You are one of my most trusted sources here, but I have to tell you, at least on the UAP-AC-Lite, this recipe still works
As the OP notes, he was able to downgrade successfully from 6.5.28 to 6.2.49, and even to 4.x.xx.
6.2.49 was my starting point when I downgraded my unit to 3.7.58 and installed OpenWrt to it roughly 2+ days ago.
This evening, I have installed OEM 6.5.28 and back to 3.7.58 and then forward to OpenWrt again as well as running the automated script to achieve same.
I cannot duplicate the OP’s issue on my own target device.
Good morning,
I think there is a problem with AC Pro Gen2.
I was able to go from 6.5.28 > 6.2.49 > 5.43.56 > 5.43.43.
But since no previous version tested works.
so I reverted to version 6.5.28. Again it still doesn't work.
Good morning @Zarouka
I can’t see this being a problem specific to the AC Pro. You can clearly see downgrading to lower level firmware for the Pro is not an issue.
If I go to unifi download firmware for AC-Lite and then go to unifi download firmware for AC-Pro I get the byte by byte common image for all platforms in this entire product line ie UAP-AC-IW, UAP-AC-LITE, UAP-AC-LR, UAP-AC-M, UAP-AC-M-PRO, UAP-AC-PRO
It makes no sense that the AC-Pro is the only target 
in this common firmware product line that will not accept 3.7.58 especially on a 6 year old device that’s close or at EOL by the vendor.
Are you sure your 3.7.58 DL file returns the correct md5sum yourDLfile and/or sha512sum yourDLfile?
Have you tried the script at https://github.com/damadmai/unifi_openwrt ?
Other than that I’m out of options. I cannot duplicate your issue on my AC-Lite on same firmware platform.
Exhausting any other option, I’d suggest raising an issue at https://github.com/openwrt/openwrt/issues
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