AirTight C-55: OpenWrt installation method

Installing and Using OpenWrt
1

Hi!

I'm trying to understand how to install OpenWRT binary onto AirTight C-55 hardware. Sadly I was not able to find enough information about the process. C-55 does not try to access TFTP server during boot, U-Boot doesnt allow to interrupted the boot process through console, so I'm a bit frustrated. Search in the forum topics gives only a few posts without the necessary information. Maybe somebody, who have already succesfully reflashed this AP, will point me the right direction? :slight_smile: As a last resort I can use SPI programmer to reprogram desoldered flash chip, but I prefer not to use soldering, if other methods exists.

Thank you in advance, Gleb.

2

Problem is solved - AirTight hardware fail to start properly when powering on with serial interface connected (due to 3.3V level mismatch or something similar). Serial header must be connected after power is applied, after that autoboot can be stopped via terminal. OpenWRT was installed succesfully via TFTP.

1 Like
3

Congrats!
since you have the device, could you please post a photo or two of the PCB, and perhaps a complete boot log?

4

Sure, here is the stock firmware log (if serial is connected before applying power, boot is stopped after the string 'Stack Pointer at: 8037bf98' and device hangs):


U-Boot 1.1.4 (Jan  9 2013 - 20:19:47)

U-boot DB120
DRAM:
sri
Wasp 1.2
wasp_ddr_initial_config(276): Wasp (16bit) ddr1 init
wasp_ddr_initial_config(426): Wasp ddr init done
Tap value selected = 0x8 [0xaa55aa55 - 0x0]
 4 MB
Top of RAM usable for U-Boot at: 80400000
Reserving 207k for U-Boot at: 803cc000
Reserving 192k for malloc() at: 8039c000
Reserving 44 Bytes for Board Info at: 8039bfd4
Reserving 36 Bytes for Global Data at: 8039bfb0
Reserving 128k for boot params() at: 8037bfb0
Stack Pointer at: 8037bf98
Now running in RAM - U-Boot at: 87fcc000
Flash Manuf Id 0x1, DeviceId0 0x2, DeviceId1 0x19
flash size 32MB, sector count = 512
Flash: 32 MB
BOARD IS NOT CALIBRATED!!!
In:    serial
Out:   serial
Err:   serial
Setting 0xb8116290 to 0x5cb82d0f
Net:   ag934x_enet_initialize...
Fetching MAC Address from 0x87feee78
 wasp  reset mask:c03300
WASP  ----> S17 PHY *
: cfg1 0x80000000 cfg2 0x7114
eth0: 00:11:74:96:33:1f
athrs17_reg_init: complete
eth0 up
eth0
Hit any key to stop autoboot:  0
## Booting image at 9f060000 ...
addr=9f060000   Image Name:   Linux Kernel Image
   Created:      2013-10-31  13:41:32 UTC
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    976638 Bytes = 953.7 kB
   Load Address: 80002000
   Entry Point:  8020ce10
   Verifying Checksum at 0x9f060040 ...OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 8020ce10) ...
## Giving linux memsize in bytes, 134217728

Starting kernel ...

Booting Atheros AR934x
Linux version 2.6.31--LSDK-9.2.0_U10.5.13 (root@productbuilder-2) (gcc version 4.3.3 (GCC) ) #1 Thu Oct 31 19:10:56 IST 2013
flash_size passed from bootloader = 32
arg 1: console=ttyS0,115200
arg 2: root=31:03
arg 3: rootfstype=jffs2
arg 4: init=/sbin/init
arg 5: mtdparts=ath-nor0:256k(u-boot),128k(uboot-env),2048k(kernel),13824k(rootfs),13824k(opt),2624k(failsafe),64k(ART)
arg 6: mem=128M
CPU revision is: 0001974c (MIPS 74Kc)
ath_sys_frequency: cpu srif ddr srif cpu 560 ddr 450 ahb 225
Determined physical RAM map:
 memory: 02000000 @ 00000000 (usable)
User-defined physical RAM map:
 memory: 08000000 @ 00000000 (usable)
Initrd not found or empty - disabling initrd
Zone PFN ranges:
  Normal   0x00000000 -> 0x00008000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0: 0x00000000 -> 0x00008000
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: console=ttyS0,115200 root=31:03 rootfstype=jffs2 init=/sbin/init mtdparts=ath-nor0:256k(u-boot),128k(uboot-env),2048k(kernel),13824k(rootfs),13824k(opt),2624k(failsafe),64k(ART) mem=128M
PID hash table entries: 512 (order: 9, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
Writing ErrCtl register=00000000
Readback ErrCtl register=00000000
Memory: 112540k/131072k available (2111k kernel code, 18360k reserved, 498k data, 160k init, 0k highmem)
NR_IRQS:128
plat_time_init: plat time init done
r4k_clockevent_init: Ignoring int_usable failure
Console: colour dummy device 80x25
Calibrating delay loop... 279.55 BogoMIPS (lpj=559104)
Mount-cache hash table entries: 512

****************ALLOC***********************
 Packet mem: 802cbea0 (0xe00000 bytes)
********************************************

NET: Registered protocol family 16
PCI init:ath_pcibios_init
ath_pcibios_init(294): PCI CMD write: 0x356
registering PCI controller with io_map_base unset
bio: create slab <bio-0> at 0
SCSI subsystem initialized
pci 0000:00:00.0: PME# supported from D0 D1 D3hot
pci 0000:00:00.0: PME# disabled
Returning IRQ 64
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
ATH GPIOC major 0
JFFS2 version 2.2 (NAND) (ZLIB) (RTIME) (c) 2001-2006 Red Hat, Inc.
fuse init (API version 7.12)
msgmni has been set to 220
io scheduler noop registered
io scheduler deadline registered (default)
Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0xb8020000 (irq = 19) is a 16550A
console [ttyS0] enabled
brd: module loaded
7 cmdlinepart partitions found on MTD device ath-nor0
Creating 7 MTD partitions on "ath-nor0":
0x000000000000-0x000000040000 : "u-boot"
0x000000040000-0x000000060000 : "uboot-env"
0x000000060000-0x000000260000 : "kernel"
0x000000260000-0x000000fe0000 : "rootfs"
0x000000fe0000-0x000001d60000 : "opt"
0x000001d60000-0x000001ff0000 : "failsafe"
0x000001ff0000-0x000002000000 : "ART"
TCP cubic registered
NET: Registered protocol family 17
Bridge firewalling registered
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
arch/mips/atheros/gpio.c (ath_simple_config_init) JUMPSTART_GPIO: 12
ath_simple_config_invoke_cb: sc 1, irq 0, ignorepb 0, jiffies 4294892489
simple_config callback.. push dur in sec 0
ath_simple_config_invoke_cb: sc 1, irq 0, ignorepb 1, jiffies 4294892491
athwdt_init: Registering WDT success
ath_otp_init: Registering OTP success
ath_clksw_init: Registering Clock Switch Interface success
VFS: Mounted root (jffs2 filesystem) readonly on device 31:3.
Freeing unused kernel memory: 160k freed
Warning: unable to open an initial console.
ATHR_GMAC: Length per segment 1536
ATHR_GMAC: fifo cfg 3 01f00140
ATHR_GMAC: RX TASKLET - Pkts per Intr:100
ATHR_GMAC: Mac address for unit 0:bfff0000
ATHR_GMAC: 19:85:20:03:00:00
ATHR_GMAC: Max segments per packet :   1
ATHR_GMAC: Max tx descriptor count :   128
ATHR_GMAC: Max rx descriptor count :   128
ATHR_GMAC: Mac capability flags    :   2381
athr_gmac_ring_alloc Allocated 2048 at 0x87910000
athr_gmac_ring_alloc Allocated 2048 at 0x879e2800
WASP  ----> S17 PHY *
Setting Drop CRC Errors, Pause Frames and Length Error frames
athrs17_reg_init:done
Setting PHY...
Phy setup Complete
[az] 802.3az init done..
LED driver initializing
apmode is 0
Initialising Reset Sensor module
Sensor Integrity Check: [PASSED]
FIPS mode:  [OFF]

 (none) mips #1 Thu Oct 31 19:10:56 IST 2013 (none)
(none) login:

I can grab and post OpenWRT boot log too, if it might be useful.

5

PCB top:

c55top
c55top1600×1577 473 KB

6

PCB bottom:

c55bottom
c55bottom1600×1577 436 KB

1 Like
7

Thank you, is the console the 4 holes by the v.1.0.0 sticker on the 2nd photo?

8

No, connector is near black/gray antenna cables, here is pinout:
c55uart

1 Like
9

Here is the flashing process log with initramfs image booting (pretty old version, only for flashing new image):

Hit any key to stop autoboot:  0
ar7240> tftp 0x81000000 A520A8C0.img
Trying eth0
dup 1 speed 1000
Using eth0 device
TFTP from server 192.168.9.109; our IP address is 192.168.9.111
Filename 'A520A8C0.img'.
Load address: 0x81000000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ###################################
done
Bytes transferred = 4838153 (49d309 hex)
ar7240> bootn 0x81000000
Unknown command 'bootn' - try 'help'
ar7240> bootm 0x81000000
## Booting image at 81000000 ...
addr=81000000   Image Name:   MIPS openwrt-hzj Linux-4.9.146
   Created:      2018-12-31   3:29:53 UTC
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    4838089 Bytes =  4.6 MB
   Load Address: 80060000
   Entry Point:  80060000
   Verifying Checksum at 0x81000040 ...OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80060000) ...
## Giving linux memsize in bytes, 134217728

Starting kernel ...

[    0.000000] Linux version 4.9.146 (hzjnet@ub16opar71nandnorip225) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r1110-8fa42fb) ) #0 Mon Dec 31 03:29:53 2018
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[    0.000000] SoC: Atheros AR9344 rev 2
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 08000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Reserving 0MB of memory at 0MB for crashkernel
[    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 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line:  board=C-55 mtdparts=spi0.0:256k(u-boot)ro,128k(u-boot-env)ro,2048k(kernel),13824k(rootfs),13824k(opt)ro,2624k(failsafe)ro,64k(art)ro,15872k@0x60000(firmware) console=ttyS0,115200 rootfstype=squashfs noinitrd
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 114260K/131072K available (3670K kernel code, 177K rwdata, 868K rodata, 10316K init, 219K bss, 16812K 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] Clocks: CPU:560.000MHz, DDR:450.000MHz, AHB:225.000MHz, Ref:25.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6825930166 ns
[    0.000009] sched_clock: 32 bits at 280MHz, resolution 3ns, wraps every 7669584382ns
[    0.008242] Calibrating delay loop... 278.93 BogoMIPS (lpj=1394688)
[    0.081040] pid_max: default: 32768 minimum: 301
[    0.086011] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.092990] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.103127] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.113517] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.121151] NET: Registered protocol family 16
[    0.127358] MIPS: machine is AirTight Networks C-55
[    0.366459] registering PCI controller with io_map_base unset
[    0.387542] PCI host bridge to bus 0000:00
[    0.391873] pci_bus 0000:00: root bus resource [mem 0x10000000-0x13ffffff]
[    0.399166] pci_bus 0000:00: root bus resource [io  0x0000]
[    0.405035] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[    0.412204] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.420590] pci 0000:00:00.0: invalid calibration data
[    0.426432] pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1001ffff 64bit]
[    0.434157] pci 0000:00:00.0: BAR 6: assigned [mem 0x10020000-0x1002ffff pref]
[    0.441808] pci 0000:00:00.0: using irq 40 for pin 1
[    0.450252] clocksource: Switched to clocksource MIPS
[    0.456677] NET: Registered protocol family 2
[    0.462188] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.469545] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.476297] TCP: Hash tables configured (established 1024 bind 1024)
[    0.483099] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.489266] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.496154] NET: Registered protocol family 1
[    0.715892] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.729946] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.736132] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.873140] io scheduler noop registered
[    0.877273] io scheduler deadline registered (default)
[    0.883138] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.892605] console [ttyS0] disabled
[    0.916475] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 1562500) is a 16550A
[    0.925588] console [ttyS0] enabled
[    0.925588] console [ttyS0] enabled
[    0.933151] bootconsole [early0] disabled
[    0.933151] bootconsole [early0] disabled
[    0.947307] m25p80 spi0.0: found s25fl256s1, expected m25p80
[    0.953224] m25p80 spi0.0: s25fl256s1 (32768 Kbytes)
[    0.958393] 8 cmdlinepart partitions found on MTD device spi0.0
[    0.964526] Creating 8 MTD partitions on "spi0.0":
[    0.969480] 0x000000000000-0x000000040000 : "u-boot"
[    1.015564] 0x000000040000-0x000000060000 : "u-boot-env"
[    1.062711] 0x000000060000-0x000000260000 : "kernel"
[    1.108202] 0x000000260000-0x000000fe0000 : "rootfs"
[    1.114790] mtd: device 3 (rootfs) set to be root filesystem
[    1.121199] mtdsplit: no squashfs found in "rootfs"
[    1.165768] 0x000000fe0000-0x000001d60000 : "opt"
[    1.211154] 0x000001d60000-0x000001ff0000 : "failsafe"
[    1.257839] 0x000001ff0000-0x000002000000 : "art"
[    1.303121] 0x000000060000-0x000000fe0000 : "firmware"
[    1.350654] libphy: Fixed MDIO Bus: probed
[    1.407516] libphy: ag71xx_mdio: probed
[    2.140528] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd072, driver=Atheros 8035 ethernet]
[    2.151591] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[    2.159824] NET: Registered protocol family 10
[    2.168153] NET: Registered protocol family 17
[    2.172855] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    2.186363] 8021q: 802.1Q VLAN Support v1.8
[    2.192378] hctosys: unable to open rtc device (rtc0)
[    2.243654] Freeing unused kernel memory: 10316K
[    2.248431] This architecture does not have kernel memory protection.
[    2.270198] init: Console is alive
[    2.274074] init: - watchdog -
[    2.316437] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    2.373059] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    2.391002] init: - preinit -
[    2.490275] random: fast init done
[    2.638615] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    2.665750] random: procd: uninitialized urandom read (4 bytes read)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[    5.792293] eth0: link up (1000Mbps/Full duplex)
[    5.797105] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    5.812308] eth0: link down
[    5.826789] procd: - early -
[    5.829869] procd: - watchdog -
[    6.406058] procd: - watchdog -
[    6.409595] procd: - ubus -
[    6.420320] random: ubusd: uninitialized urandom read (4 bytes read)
[    6.463470] random: ubusd: uninitialized urandom read (4 bytes read)
[    6.470565] random: ubusd: uninitialized urandom read (4 bytes read)
[    6.478130] procd: - init -
Please press Enter to activate this console.
[    6.698667] kmodloader: loading kernel modules from /etc/modules.d/*
[    6.722934] gre: GRE over IPv4 demultiplexor driver
[    6.741861] ip_gre: GRE over IPv4 tunneling driver
[    6.751794] Netfilter messages via NETLINK v0.30.
[    6.762859] ip_set: protocol 6
[    6.901474] u32 classifier
[    6.904279]     input device check on
[    6.908058]     Actions configured
[    6.924770] Mirror/redirect action on
[    6.989762] Loading modules backported from Linux version v4.19.7-0-g61c68f2a2af0
[    6.997548] Backport generated by backports.git v4.19.7-1-0-g148b072d
[    7.055597] ip_tables: (C) 2000-2006 Netfilter Core Team
[    7.093814] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[    7.117912] ctnetlink v0.93: registering with nfnetlink.
[    7.318365] xt_time: kernel timezone is -0000
[    7.382665] fast-classifier (PBR safe v2.1b): starting up
[    7.388424] fast-classifier (PBR safe v2.1b): registered
[    7.516595] PPP generic driver version 2.4.2
[    7.530746] PPP MPPE Compression module registered
[    7.544383] NET: Registered protocol family 24
[    7.557071] PPTP driver version 0.8.5
[    7.731514] ath9k ar934x_wmac: Direct firmware load for soc_wmac.eeprom failed with error -2
[    7.740289] ath9k ar934x_wmac: Falling back to user helper
[    8.104814] ath: phy0: disabling 2GHz band
[    8.126768] ieee80211 phy0: Atheros AR9340 Rev:2 mem=0xb8100000, irq=47
[    8.133854] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
[    8.140721] ath9k 0000:00:00.0: Direct firmware load for pci_wmac0.eeprom failed with error -2
[    8.149626] ath9k 0000:00:00.0: Falling back to user helper
[    8.750640] ieee80211 phy1: Atheros AR9300 Rev:3 mem=0xb0000000, irq=40
[    8.783515] kmodloader: done loading kernel modules from /etc/modules.d/*
[    9.169977] urandom_read: 5 callbacks suppressed
[    9.169985] random: jshn: uninitialized urandom read (4 bytes read)
[   12.802066] xt_FULLCONENAT: RFC3489 Full Cone NAT module
[   12.802066] xt_FULLCONENAT: Copyright (C) 2018 Chion Tang <tech@chionlab.moe>
[   19.074758] br-lan: port 1(eth0) entered blocking state
[   19.080171] br-lan: port 1(eth0) entered disabled state
[   19.085978] device eth0 entered promiscuous mode
[   19.126008] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[   21.151763] eth0: link up (1000Mbps/Full duplex)
[   21.156581] br-lan: port 1(eth0) entered blocking state
[   21.162006] br-lan: port 1(eth0) entered forwarding state
[   21.254828] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[   22.459138] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   22.482106] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[   22.563399] br-lan: port 2(wlan1) entered blocking state
[   22.568965] br-lan: port 2(wlan1) entered disabled state
[   22.574908] device wlan1 entered promiscuous mode
[   22.579849] br-lan: port 2(wlan1) entered blocking state
[   22.585406] br-lan: port 2(wlan1) entered forwarding state
[   22.668086] br-lan: port 3(wlan0) entered blocking state
[   22.673652] br-lan: port 3(wlan0) entered disabled state
[   22.679643] device wlan0 entered promiscuous mode
[   23.470842] br-lan: port 2(wlan1) entered disabled state
[   24.732391] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[   24.739113] br-lan: port 2(wlan1) entered blocking state
[   24.744649] br-lan: port 2(wlan1) entered forwarding state
[   24.820365] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   24.827172] br-lan: port 3(wlan0) entered blocking state
[   24.832725] br-lan: port 3(wlan0) entered forwarding state
[   58.933761] random: crng init done



BusyBox v1.29.2 () built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 openwrt-hzj 18.06.1, r1110-8fa42fb
 -----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@OpenWrt:/# sysupgrade -n /tmp/tmp/openwrt-19.07.8-ar71xx-generic-c-55-squashfs-sysupgrade.bin
Image metadata not found
Commencing upgrade. Closing all shell sessions.
Watchdog handover: fd=3
- watchdog -
killall: telnetd: no process killed
Sending TERM to remaining processes ... rpcd netifd uhttpd dnsmasq hostapd [  249.618688] device wlan1 left promiscuous mode
[  249.623437] br-lan: port 2(wlan1) entered disabled state
ntpd hostapd [  249.641824] device wlan0 left promiscuous mode
[  249.646563] br-lan: port 3(wlan0) entered disabled state
ubusd
Sending KILL to remaining processes ...
Performing system upgrade...
Unlocking firmware ...

Writing from <stdin> to firmware ...
Upgrade completed
Rebooting system...
umount: can't unmount /dev: Resource busy
umount: can't unmount /tmp: Resource busy
umount: can't unmount /: Invalid argument
[  273.621282] reboot: Restarting system
10

Didn't see those, thnx.

11

You are welcome. :slight_smile:

12

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