Unbrick TP-Link TL-WR941ND v3.6

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DeFacto76
DD-WRT Novice


Joined: 27 Apr 2019
Posts: 3

PostPosted: Mon May 27, 2019 12:25    Post subject: Unbrick TP-Link TL-WR941ND v3.6 Reply with quote
Hello,

I have bricked my old TP-Link router and cannot unbrick it folowing the tutorials i have found on this forum. I do try it via serial, but my router does not accept command "tpl" that needs to be sent right after "Autobooting after 1 seconds". Any help would be appreciated. Thank you in advance.

    U-Boot 1.1.4 (Jan 30 2012 - 17:57:33)

    AP81 (ar7100) U-boot
    DRAM:
    sri
    32 MB
    id read 0x100000ff
    flash size 4MB, sector count = 64
    Flash: 4 MB
    Using default environment

    In: serial
    Out: serial
    Err: serial
    Net: ag7100_enet_initialize...
    No valid address in Flash. Using fixed address
    bsingle_phy = 0
    eth0: 00:03:7f:09:0b:ad
    eth0 up
    eth0
    Autobooting in 1 seconds## Booting image at bf020000 ...
    Uncompressing Kernel Image ... OK

    Starting kernel ...



    OpenWrt kernel loader for AR7XXX/AR9XXX
    Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
    Decompressing kernel...
    done!
    Starting kernel...

    [ 0.000000] Linux version 3.10.108-d8 (root@linux) (gcc version 8.2.0 (OpenWrt GCC 8.2.0 r7577-d14647dd59) ) #7605 Thu Apr 25 11:40:43 CEST 2019
    [ 0.000000] flash_size passed from bootloader = 4
    [ 0.000000] bootconsole [early0] enabled
    [ 0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
    [ 0.000000] booting platform Atheros AR9132 rev 2 (0xb9)
    [ 0.000000] Determined physical RAM map:
    [ 0.000000] memory: 02000000 @ 00000000 (usable)
    [ 0.000000] Zone ranges:
    [ 0.000000] Normal [mem 0x00000000-0x01ffffff]
    [ 0.000000] Movable zone start for each node
    [ 0.000000] Early memory node ranges
    [ 0.000000] node 0: [mem 0x00000000-0x01ffffff]
    [ 0.000000] Primary instruction cache 64kB, 4-way, VIPT, I-cache aliases, 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: 8128
    [ 0.000000] Kernel command line: console=ttyS0,115200 root=1f02 rootfstype=squashfs noinitrd init=/sbin/init
    [ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
    [ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
    [ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
    [ 0.000000] Writing ErrCtl register=00000000
    [ 0.000000] Readback ErrCtl register=00000000
    [ 0.000000] Memory: 29420k/32768k available (1993k kernel code, 3348k reserved, 321k data, 180k init, 0k highmem)
    [ 0.000000] NR_IRQS:83
    [ 0.000000] irq init done
    [ 0.000000] plat_time_init: plat time init done
    [ 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: 512
    [ 0.090000] NET: Registered protocol family 16
    [ 0.100000] Can't analyze schedule() prologue at 80066f6c
    [ 0.120000] bio: create slab <bio-0> at 0
    [ 0.120000] Switching to clocksource MIPS
    [ 0.130000] NET: Registered protocol family 2
    [ 0.130000] TCP established hash table entries: 512 (order: 0, 4096 bytes)
    [ 0.140000] TCP bind hash table entries: 512 (order: -1, 2048 bytes)
    [ 0.150000] TCP: Hash tables configured (established 512 bind 512)
    [ 0.150000] TCP: reno registered
    [ 0.160000] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [ 0.160000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [ 0.170000] NET: Registered protocol family 1
    [ 0.170000] gpio_proc: module loaded and /proc/gpio/ created
    [ 0.180000] Register LED Device
    [ 0.180000] wl0gpio_proc: module loaded and /proc/wl0gpio/ created
    [ 0.190000] AR7100 GPIOC major 0
    [ 0.190000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
    [ 0.200000] msgmni has been set to 57
    [ 0.210000] io scheduler noop registered
    [ 0.210000] io scheduler deadline registered (default)
    [ 0.210000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
    [ 0.240000] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 19) is a 16550A
    [ 0.250000] console [ttyS0] enabled, bootconsole disabled
    [ 0.250000] console [ttyS0] enabled, bootconsole disabled
    [ 0.260000] guessed flashsize = 4M
    [ 0.270000] scanning for root partition
    [ 0.270000] ZCom quirk found
    [ 0.270000] bootloader size = F0000
    [ 0.280000]
    [ 0.280000] found squashfs at F0000
    [ 0.290000] Creating 8 MTD partitions on "ar7100-nor0":
    [ 0.290000] 0x000000000000-0x0000000f0000 : "RedBoot"
    [ 0.300000] 0x000000050000-0x0000007d0000 : "linux"
    [ 0.300000] mtd: partition "linux" extends beyond the end of device "ar7100-nor0" -- size truncated to 0x3b0000
    [ 0.320000] 0x000000050000-0x000000330000 : "rootfs"
    [ 0.320000] mtd: partition "rootfs" set to be root filesystem
    [ 0.330000] 0x000000330000-0x0000007d0000 : "ddwrt"
    [ 0.330000] mtd: partition "ddwrt" extends beyond the end of device "ar7100-nor0" -- size truncated to 0xd0000
    [ 0.350000] 0x0000003e0000-0x0000003f0000 : "nvram"
    [ 0.350000] 0x0000003f0000-0x000000400000 : "FIS directory"
    [ 0.360000] 0x0000003f0000-0x000000400000 : "board_config"
    [ 0.370000] 0x000000000000-0x000000400000 : "fullflash"
    [ 0.370000] ->Oops: flash id 0x10215 .
    [ 0.380000] PPP generic driver version 2.4.2
    [ 0.380000] PPP BSD Compression module registered
    [ 0.390000] PPP Deflate Compression module registered
    [ 0.390000] PPP MPPE Compression module registered
    [ 0.400000] NET: Registered protocol family 24
    [ 0.410000] u32 classifier
    [ 0.410000] Performance counters on
    [ 0.420000] input device check on
    [ 0.420000] Actions configured
    [ 0.420000] Netfilter messages via NETLINK v0.30.
    [ 0.430000] nf_conntrack version 0.5.0 (459 buckets, 1836 max)
    [ 0.440000] nf_conntrack_rtsp v0.7 loading
    [ 0.440000] nf_nat_rtsp v0.7 loading
    [ 0.440000] ip_tables: (C) 2000-2006 Netfilter Core Team
    [ 0.450000] TCP: westwood registered
    [ 0.450000] TCP: hybla registered
    [ 0.460000] TCP: vegas registered
    [ 0.460000] NET: Registered protocol family 17
    [ 0.460000] Bridge firewalling registered
    [ 0.470000] 8021q: 802.1Q VLAN Support v1.8
    [ 0.470000] searching for nvram
    [ 0.480000] nvram size = 65536
    [ 0.560000] nvram empty
    [ 0.560000] Atheros AR71xx hardware watchdog driver version 0.1.0
    [ 0.560000] ar71xx-wdt: timeout=15 secs (max=42) ref freq=100000000
    [ 0.570000] List of all partitions:
    [ 0.580000] 1f00 960 mtdblock0 (driver?)
    [ 0.580000] 1f01 3776 mtdblock1 (driver?)
    [ 0.590000] 1f02 2944 mtdblock2 (driver?)
    [ 0.590000] 1f03 832 mtdblock3 (driver?)
    [ 0.600000] 1f04 64 mtdblock4 (driver?)
    [ 0.600000] 1f05 64 mtdblock5 (driver?)
    [ 0.610000] 1f06 64 mtdblock6 (driver?)
    [ 0.610000] 1f07 4096 mtdblock7 (driver?)
    [ 0.620000] No filesystem could mount root, tried: squashfs
    [ 0.620000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)
    [ 0.620000] Rebooting in 1 seconds...
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kretex
DD-WRT Novice


Joined: 24 Apr 2019
Posts: 48

PostPosted: Mon May 27, 2019 16:53    Post subject: Reply with quote
did you use openwrt or ddwrt firmware before bricked?? Rolling Eyes
DeFacto76
DD-WRT Novice


Joined: 27 Apr 2019
Posts: 3

PostPosted: Tue May 28, 2019 4:47    Post subject: Reply with quote
It was openwrt.
DeFacto76
DD-WRT Novice


Joined: 27 Apr 2019
Posts: 3

PostPosted: Tue May 28, 2019 16:21    Post subject: Reply with quote
Found the problem, RX was not soldered very well.
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