The dmesg output you asked for is attached.

Thanks
Jan-Niklas

On 4/21/22 08:34, Jan-Niklas Burfeind wrote:
Ubiquiti NanoBeam M5 devices are CPE equipment for customer locations
with one Ethernet port and a 5 GHz 300Mbps wireless interface.

Specificatons:

- Atheros AR9342
- 535 MHz CPU
- 64 MB RAM
- 8 MB Flash
- 1x 10/100 Mbps Ethernet with passive PoE input (24 V)
- 6 LEDs of which four are rssi
- 1 reset button
- UART (4-pin) header on PCB

Notes:

The device was supported by OpenWrt in ar71xx.

Flash instructions (web/ssh/tftp):

Loading the image via ssh vias a stock firmware prior "AirOS 5.6".
Downgrading stock is possible.

* Flashing is possible via AirOS software update page:
The "factory" ROM image is recognized as non-native and then installed 
correctly.
AirOS warns to better be familiar with the recovery procedure.

* Flashing can be done via ssh, which is becoming difficult due to legacy
keyexchange methods.

This is an exempary ssh-config:
KexAlgorithms +diffie-hellman-group1-sha1
HostKeyAlgorithms ssh-rsa
PubkeyAcceptedKeyTypes ssh-rsa
User ubnt

The password is ubnt.

Connecting via IPv6 link local worked best for me.

1. scp the factory image to /tmp
2. fwupdate.real -m /tmp/firmware_image_file.bin -d

* Alternatively tftp is possible:

1. Configure PC with static IP 192.168.1.2/24.
2. Enter the rescue mode. Power off the device, push the reset button on
    the device (or the PoE) and keep it pressed.
    Power on the device, while still pushing the reset button.
3. When all the leds blink at the same time, release the reset button.
4. Upload the firmware image file via TFTP:

tftp 192.168.1.20
tftp> bin
tftp> trace
Packet tracing on.
tftp> put firmware_image.bin

Signed-off-by: Jan-Niklas Burfeind <[email protected]>
---
  .../ath79/dts/ar9342_ubnt_nanobeam-m5.dts     | 26 +++++++++++++++++++
  target/linux/ath79/image/generic-ubnt.mk      |  8 ++++++
  2 files changed, 34 insertions(+)
  create mode 100644 target/linux/ath79/dts/ar9342_ubnt_nanobeam-m5.dts

diff --git a/target/linux/ath79/dts/ar9342_ubnt_nanobeam-m5.dts 
b/target/linux/ath79/dts/ar9342_ubnt_nanobeam-m5.dts
new file mode 100644
index 0000000000..86a5e3a751
--- /dev/null
+++ b/target/linux/ath79/dts/ar9342_ubnt_nanobeam-m5.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9342_ubnt_xw.dtsi"
+
+/ {
+       compatible = "ubnt,nanobeam-m5-xw", "ubnt,xw", "qca,ar9342";
+       model = "Ubiquiti NanoBeam M5 (XW)";
+};
+
+&mdio0 {
+       status = "okay";
+
+       phy-mask = <0x1>;
+
+       phy1: ethernet-phy@1 {
+               reg = <1>;
+               phy-mode = "mii";
+               reset-gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&eth0 {
+       status = "okay";
+
+       phy-handle = <&phy1>;
+};
diff --git a/target/linux/ath79/image/generic-ubnt.mk 
b/target/linux/ath79/image/generic-ubnt.mk
index 0b613df62b..9de83d42c2 100644
--- a/target/linux/ath79/image/generic-ubnt.mk
+++ b/target/linux/ath79/image/generic-ubnt.mk
@@ -255,6 +255,14 @@ define Device/ubnt_nanobeam-ac-xc
  endef
  TARGET_DEVICES += ubnt_nanobeam-ac-xc
+define Device/ubnt_nanobeam-m5
+  $(Device/ubnt-xw)
+  DEVICE_MODEL := NanoBeam M5
+  DEVICE_PACKAGES += rssileds
+  SUPPORTED_DEVICES += loco-m-xw
+endef
+TARGET_DEVICES += ubnt_nanobeam-m5
+
  define Device/ubnt_nanobridge-m
    $(Device/ubnt-xm)
    SOC := ar7241
[    0.000000] Linux version 5.10.111 (aiyion@chromia) 
(mips-openwrt-linux-musl-gcc (OpenWrt GCC 11.2.0 r19508+1-0d2d52df69) 11.2.0, 
GNU ld (GNU Binutils) 2.37) #0 Wed Apr 20 16:26:56 2022
[    0.000000] printk: bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[    0.000000] MIPS: machine is Ubiquiti NanoBeam M5 (XW)
[    0.000000] SoC: Atheros AR9342 rev 2
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 
bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] On node 0 totalpages: 16384
[    0.000000]   Normal zone: 144 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 16384 pages, LIFO batch:3
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16240
[    0.000000] Kernel command line: console=ttyS0,115200 
rootfstype=squashfs,jffs2
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, 
linear)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, 
linear)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 56188K/65536K available (5459K kernel code, 598K rwdata, 
1200K rodata, 1180K init, 201K bss, 9348K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 51
[    0.000000] random: get_random_bytes called from start_kernel+0x3c0/0x5b0 
with crng_init=0
[    0.000000] CPU clock: 535.000 MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, 
max_idle_ns: 7144898866 ns
[    0.000011] sched_clock: 32 bits at 267MHz, resolution 3ns, wraps every 
8027976190ns
[    0.008331] Calibrating delay loop... 266.64 BogoMIPS (lpj=1333248)
[    0.094957] pid_max: default: 32768 minimum: 301
[    0.100060] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, 
linear)
[    0.107865] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, 
linear)
[    0.118562] dyndbg: Ignore empty _ddebug table in a 
CONFIG_DYNAMIC_DEBUG_CORE build
[    0.129970] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, 
max_idle_ns: 19112604462750000 ns
[    0.140503] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.147884] pinctrl core: initialized pinctrl subsystem
[    0.154746] NET: Registered protocol family 16
[    0.229306] clocksource: Switched to clocksource MIPS
[    0.236195] NET: Registered protocol family 2
[    0.241105] IP idents hash table entries: 2048 (order: 2, 16384 bytes, 
linear)
[    0.249634] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 
bytes, linear)
[    0.258597] TCP established hash table entries: 1024 (order: 0, 4096 bytes, 
linear)
[    0.266822] TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.274351] TCP: Hash tables configured (established 1024 bind 1024)
[    0.281285] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.288274] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.296063] NET: Registered protocol family 1
[    0.300803] PCI: CLS 0 bytes, default 32
[    0.312688] workingset: timestamp_bits=14 max_order=14 bucket_order=0
[    0.324534] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.330814] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) 
(CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.346113] pinctrl-single 1804002c.pinmux: 544 pins, size 68
[    0.353462] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.361223] printk: console [ttyS0] disabled
[    0.365877] 18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 9, base_baud = 
2500000) is a 16550A
[    0.375146] printk: console [ttyS0] enabled
[    0.384056] printk: bootconsole [early0] disabled
[    0.407168] spi-nor spi0.0: mx25l6405d (8192 Kbytes)
[    0.412384] 5 fixed-partitions partitions found on MTD device spi0.0
[    0.418834] Creating 5 MTD partitions on "spi0.0":
[    0.423726] 0x000000000000-0x000000040000 : "u-boot"
[    0.433619] 0x000000040000-0x000000050000 : "u-boot-env"
[    0.440313] 0x000000050000-0x0000007b0000 : "firmware"
[    0.448890] 2 uimage-fw partitions found on MTD device firmware
[    0.454995] Creating 2 MTD partitions on "firmware":
[    0.460076] 0x000000000000-0x000000230000 : "kernel"
[    0.467269] 0x000000230000-0x000000760000 : "rootfs"
[    0.473421] mtd: device 4 (rootfs) set to be root filesystem
[    0.480473] 1 squashfs-split partitions found on MTD device rootfs
[    0.486783] 0x000000560000-0x000000760000 : "rootfs_data"
[    0.493424] 0x0000007b0000-0x0000007f0000 : "cfg"
[    0.501506] 0x0000007f0000-0x000000800000 : "art"
[    0.905155] ag71xx 19000000.eth: connected to PHY at mdio.0:01 
[uid=004dd023, driver=Qualcomm Atheros AR8032]
[    0.916106] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: mii
[    0.922667] i2c /dev entries driver
[    0.928594] NET: Registered protocol family 10
[    0.945600] Segment Routing with IPv6
[    0.949549] NET: Registered protocol family 17
[    0.954169] 8021q: 802.1Q VLAN Support v1.8
[    0.969573] VFS: Mounted root (squashfs filesystem) readonly on device 31:4.
[    0.984524] Freeing unused kernel memory: 1180K
[    0.989128] This architecture does not have kernel memory protection.
[    0.995712] Run /sbin/init as init process
[    0.999882]   with arguments:
[    0.999889]     /sbin/init
[    0.999894]   with environment:
[    0.999900]     HOME=/
[    0.999906]     TERM=linux
[    1.796884] init: Console is alive
[    1.801023] init: - watchdog -
[    2.339547] random: fast init done
[    3.151145] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    3.214708] usbcore: registered new interface driver usbfs
[    3.220472] usbcore: registered new interface driver hub
[    3.225963] usbcore: registered new device driver usb
[    3.241768] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.250536] ehci-fsl: Freescale EHCI Host controller driver
[    3.259501] ehci-platform: EHCI generic platform driver
[    3.269079] kmodloader: done loading kernel modules from 
/etc/modules-boot.d/*
[    3.287122] init: - preinit -
[    5.125688] random: jshn: uninitialized urandom read (4 bytes read)
[    5.634367] random: jshn: uninitialized urandom read (4 bytes read)
[    5.692953] random: jshn: uninitialized urandom read (4 bytes read)
[    8.100783] eth0: link up (100Mbps/Full duplex)
[    8.105438] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   10.403610] mount_root: jffs2 not ready yet, using temporary tmpfs overlay
[   10.415933] urandom-seed: Seed file not found (/etc/urandom.seed)
[   10.754308] eth0: link down
[   10.773605] procd: - early -
[   10.776992] procd: - watchdog -
[   11.618792] procd: - watchdog -
[   11.659624] procd: - ubus -
[   12.002244] urandom_read: 5 callbacks suppressed
[   12.002256] random: ubusd: uninitialized urandom read (4 bytes read)
[   12.038538] random: ubusd: uninitialized urandom read (4 bytes read)
[   12.064101] procd: - init -
[   13.572555] kmodloader: loading kernel modules from /etc/modules.d/*
[   14.119378] urngd: v1.0.2 started.
[   14.274901] Loading modules backported from Linux version 
v5.15.33-0-g06f50ca83ace
[   14.282668] Backport generated by backports.git v5.15.33-1-0-g183c4ab2
[   14.399361] random: crng init done
[   15.076320] PPP generic driver version 2.4.2
[   15.100865] NET: Registered protocol family 24
[   15.233862] ath: EEPROM regdomain: 0x0
[   15.233880] ath: EEPROM indicates default country code should be used
[   15.233886] ath: doing EEPROM country->regdmn map search
[   15.233906] ath: country maps to regdmn code: 0x3a
[   15.233915] ath: Country alpha2 being used: US
[   15.233921] ath: Regpair used: 0x3a
[   15.248596] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   15.251368] ieee80211 phy0: Atheros AR9340 Rev:2 mem=0xb8100000, irq=12
[   15.379877] kmodloader: done loading kernel modules from /etc/modules.d/*
[   57.070849] jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
[   57.077852] jffs2_build_filesystem(): unlocking the mtd device... 
[   57.099385] done.
[   57.107628] jffs2_build_filesystem(): erasing all blocks after the end 
marker... 
[   66.155066] br-lan: port 1(eth0) entered blocking state
[   66.168042] br-lan: port 1(eth0) entered disabled state
[   66.173802] device eth0 entered promiscuous mode
[   69.300850] eth0: link up (100Mbps/Full duplex)
[   69.305521] br-lan: port 1(eth0) entered blocking state
[   69.310880] br-lan: port 1(eth0) entered forwarding state
[   69.376916] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[   72.637581] done.
[   72.639657] jffs2: notice: (1532) jffs2_build_xattr_subsystem: complete 
building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 
dead, 0 orphan) found.
[   73.003626] overlayfs: upper fs does not support tmpfile.
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