TL-WR840N v1 (Broadcom) Bricked

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Tic
DD-WRT Novice


Joined: 11 Sep 2014
Posts: 2

PostPosted: Thu Sep 11, 2014 7:21    Post subject: TL-WR840N v1.0 (Broadcom) Bricked Reply with quote
Please help with restoring firmware.
Tp-Link TL-WR840N Broadcom chip.
Wrong firmware flashed - now bricked.
I connected via Serial cable - Result :
Code:
Decompressing...done


CFE version 5.100.138.2202 based on BBP 1.0.37 for BCM947XX (32bit,SP,LE)
Build Date: Thu Aug 29 14:38:19 CST 2013 (tplink@localhost.localdomain)
Copyright (C) 2000-2008 Broadcom Corporation.

Init Arena
Init Devs.
Boot partition size = 131072(0x20000)
Found an ST compatible serial flash with 64 64KB blocks; total size 4MB
et0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 5.100.138.2202
CPU type 0x19749: 300MHz
Tot mem: 32768 KBytes

CFE mem:    0x80700000 - 0x80798440 (623680)
Data:       0x8072E260 - 0x807314B0 (12880)
BSS:        0x807314B0 - 0x80732440 (3984)
Heap:       0x80732440 - 0x80796440 (409600)
Stack:      0x80796440 - 0x80798440 (8192)
Text:       0x80700000 - 0x8072E25C (189020)

Device eth0:  hwaddr C0-4A-00-46-B1-E8, ipaddr 192.168.0.1, mask 255.255.255.0
        gateway not set, nameserver not set
Invalid boot block on disk
flash0.0: Device not found
Loader:raw Filesys:raw Dev:flash0.os File: Options:(null)
Loading: PANIC: out of memory!
raw_fileop_uninit: warning: refcnt not zero
Entry at 0x00000000

Available commands: show, nvram, reboot, flash, batch, go, boot, load, save, ping, arp, ifconfig, help

CFE>


Is any way to put original firmware to device ?



20140911_095508_1.jpg
 Description:
Opened Tp-Link TL-WR840N with Broadcom BCM5357 chip
 Filesize:  243.74 KB
 Viewed:  485 Time(s)

20140911_095508_1.jpg


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kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14249
Location: Texas, USA

PostPosted: Sat Mar 23, 2024 18:29    Post subject: Reply with quote
The Broadcom version 1.0 of this router is NOT currently supported, only the v1.1 Atheros (China) version is.

WR840N v1.1 Atheros (China)

https://dd-wrt.com/support/router-database/?model=WR840N_1.x

https://wiki.dd-wrt.com/wiki/index.php/Supported_Devices#TP-Link

https://wikidevi.wi-cat.ru/TP-LINK_TL-WR840N_v1_(China_only?)

https://wikidevi.wi-cat.ru/TP-LINK_TL-WR840N_v1 (Broadcom)

TL-WR840N v1 (Broadcom) Bricked

The files needed to restore are attachments in TP Link TL-WR840N v1.0 - stuck at CFE. thread. There was also a suggestion to use a mini K2.6 generic DD-WRT bin file to flash DD-WRT, but no indication of any attempt or success, so Caveat Emptor.

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