My yun broke up after frimware upgrade to 1.6.2 !!

Hello ,

After upgrading the Yun's firmware to 1.6.2 my Yun doesn't respond any more.

I don't want to reflash YunUBoot because my previous Yun broke out. I just want to downgrade the frimware.Please help me

I have uploaded the skitch (YunSerialTerminal) and got a log :

U-Boot 1.1.4-gd995931a-dirty (Aug  7 2013 - 16:16:04)

Arduino Yun (ar9331) U-boot

DRAM:  64 MB
Top of RAM usable for U-Boot at: 84000000
Reserving 142k for U-Boot at: 83fdc000
Reserving 192k for malloc() at: 83fac000
Reserving 44 Bytes for Board Info at: 83fabfd4
Reserving 36 Bytes for Global Data at: 83fabfb0
Reserving 128k for boot params() at: 83f8bfb0
Stack Pointer at: 83f8bf98
Now running in RAM - U-Boot at: 83fdc000
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16777216, sector count = 256
Flash: 16 MB
Using default environment

In:    serial
Out:   serial
Err:   serial
Net:   ag7240_enet_initialize...
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
: cfg1 0x5 cfg2 0x7114
eth0: 00:03:7f:09:0b:ad
eth0 up
: cfg1 0xf cfg2 0x7214
eth1: 00:03:7f:09:0b:ad
athrs26_reg_init_lan
ATHRS26: resetting s26
ATHRS26: s26 reset done
eth1 up
eth0, eth1
Hit any key to stop autoboot:  4     3     2     1     0
## Booting image at 9fea0000 ...
   Image Name:   MIPS OpenWrt Linux-3.18.23
   Created:      2016-05-10   8:20:47 UTC
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    1207736 Bytes =  1.2 MB
   Load Address: 80060000
   Entry Point:  80060000
   Verifying Checksum at 0x9fea0040 ...OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80060000) ...
## Giving linux memsize in bytes, 67108864

Starting kernel ...

[    0.000000] Linux version 3.18.23 (admin@compile-01-prod) (gcc
version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r48749) ) #34 Tue May 10
08:20:13 UTC 2016
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
[    0.000000] SoC: Atheros AR9330 rev 1
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] User-defined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000-0x03ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000-0x03ffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x03ffffff]
[    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] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 16256
[    0.000000] Kernel command line:  console=ttyS0,115200 root=31:02
rootfstype=squashfs init=/sbin/init
mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),14656k(rootfs),1280k(uImage),64k(NVRAM),64k(ART)
mem=64M rootfstype=squashfs,jffs2 noinitrd
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 60676K/65536K available (2935K kernel code,
142K rwdata, 332K rodata, 228K init, 201K bss, 4860K reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:51
[    0.000000] Clocks: CPU:400.000MHz, DDR:400.000MHz, AHB:200.000MHz,
Ref:25.000MHz
[    0.000000] Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104)
[    0.080000] pid_max: default: 32768 minimum: 301
[    0.080000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.080000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.090000] NET: Registered protocol family 16
[    0.090000] MIPS: machine is Generic AR71XX/AR724X/AR913X based board
[    0.110000] Switched to clocksource MIPS
[    0.120000] NET: Registered protocol family 2
[    0.120000] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.120000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.120000] TCP: Hash tables configured (established 1024 bind 1024)
[    0.120000] TCP: reno registered
[    0.120000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.120000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.130000] NET: Registered protocol family 1
[    0.130000] RPC: Registered named UNIX socket transport module.
[    0.130000] RPC: Registered udp transport module.
[    0.130000] RPC: Registered tcp transport module.
[    0.140000] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.140000] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.150000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.160000] NFS: Registering the id_resolver key type
[    0.160000] Key type id_resolver registered
[    0.160000] Key type id_legacy registered
[    0.160000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME)
(CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.170000] msgmni has been set to 118
[    0.170000] io scheduler noop registered
[    0.170000] io scheduler deadline registered (default)
[    0.170000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.180000] ar933x-uart: ttyATH0 at MMIO 0x18020000 (irq = 11,
base_baud = 1562500) is a AR933X UART
[    0.180000] TCP: cubic registered
[    0.190000] NET: Registered protocol family 17
[    0.190000] bridge: automatic filtering via arp/ip/ip6tables has
been deprecated. Update your scripts to load br_netfilter if you need
this.
[    0.190000] 8021q: 802.1Q VLAN Support v1.8
[    0.200000] Key type dns_resolver registered
[    0.200000] bootconsole [early0] disabled

please help me :confused: :confused:

After 1.5.3 upgrade 1.6.2(Upgrading Using the Web Panel),I met wireless function can not be used.
Use the official website of the [bootloader update procedure] returned to normal. 8)

Official explanation @ https://www.arduino.cc/en/Tutorial/YunSysupgrade
If you have a Yún with an older firmware: (1.5.3) before proceed you need to to upgrade the bootloader following the bootloader update procedure. If you don't upgrade the bootloader first, your Yún will become unusable.

opq01001:
After 1.5.3 upgrade 1.6.2(Upgrading Using the Web Panel),I met wireless function can not be used.
Use the official website of the [bootloader update procedure] returned to normal. 8)

Official explanation @ https://www.arduino.cc/en/Tutorial/YunSysupgrade
If you have a Yún with an older firmware: (1.5.3) before proceed you need to to upgrade the bootloader following the bootloader update procedure. If you don't upgrade the bootloader first, your Yún will become unusable.

Thanks a lot for replying. If you did this before , can you help me with procedures ?

I have faced a problem in the TFTP server and solved by following the steps ( only for TFTP ) here :
http://www.ninjacrab.com/alljoyning/setting-up-an-arduino-yun-for-alljoynjs/

@Omar_Mekkawy,
is your issue resolved?
Jesse