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TP-Link TL-WR841ND v7.0
TP-Link TL-WR841N v7.0a


TP-Link TL-WR841ND




TP-Link TL-WR841ND


TP-Link TL-WR841ND


Not Supported


Not Supported



NOTE: During configuration or flashing a device, the only that should be hooked to the device is the computer and power.


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Serial Num. = ?
CPU Type = Atheros AR7241-AH1A G11061 1C 1021 (AR7241)
MIPS Rev = ?
CPU Speed = 400MHz
Bus = ?
Flash Type = Serial
Flash Chip = cFeon F32 - 100HIP Q01P07A F015GDA 
Flash Size = 4MB
Max Firmware Size = 3801088 bytes
RAM Size = 32MB
RAM Chip = Zentel A3S56D40FTP-G5 A25ABF48
nvram Size = ?
Switch = Atheros AR7241 (SoC)
Port-based vlan = ?
802.1q vlan = ?
Ethernet Port Count = 1-10/100-WAN 4-10/100-LAN
Wired Standard = IEEE 802.3/3u
boot_wait = ?
bootloader = U-Boot
Flash Card Socket/Type = No
SD/MMC Mod Support = No
MiniPCI slots = No
PoE = No
Power = 9V/.85A
Color of LEDs = ?
Size = 7.6 x 5.1 x 1.3 in.(192 x 130 x 33 mm)
USB = USB 2.0 Mod (R601(D+) R602(D-) ADD 5V,GND)
Serial Port = 1
JTAG Port = No
Supported by TJTAG/Version = ?
Supported by dd-wrt as of = v.24 sp2 - build 15778 - 20101121
dd-wrt K2.4 Support = ?
dd-wrt K2.6 Support = ?
Special Features = LAN and WAN not working Yet


Wireless Radio = Atheros AR9287-BL1A P1X904.00C 1015 (AR9287)
WLAN DSP processor = ?
Antenna Connector Type = 5dBi fixed Omni Directional Antenna X 2
Wireless Standard = IEEE 802.11b/g/n
WiFi Operating Frequency = 2.4-2.4835GHz
 802.11n = up to 300Mbps
 802.11g = 6, 9, 12, 18, 24, 36, 48, 54Mbps
 802.11b = 1, 2, 5.5, 11Mbps
Radio cor_rev = ?
Radio Capabilities = ?

Links of InterestEdit


First setup a TFTP server which is serving the firmware file. (Only flash "factory-to-"ddwrt/openwrt files)

Then we have to setup the network settings. Type the following things into the bootloader prompt. Replace ROUTERIP and SERVERIP with the right IPs.

setenv ipaddr ROUTERIP

setenv serverip SERVERIP

Now we have to load the firmware into the memory!. Replace FACTORY-TO-OPENWRT/DDWRT.bin with the right filename of the image!

ar7240> tftpboot 0x80000000 FACTORY-TO-OPENWRT/DDWRT.bin

You will read something like that. The size is very important. Note it. It can differ to the example.

Bytes transferred = 3932160 (3c0000 hex)

The last steps are erasing the flash and writing the new image to the right address. Replace 3c0000 with the address you noted before.

ar7240> erase 0x9f020000 +0x3c0000

ar7240> cp.b 0x80000000 0x9f020000 0x3c0000

ar7240> bootm 0x9f020000


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Fixme This section is in need of cleanup!

Revert files

JTAG/Serial InfoEdit


JTAG PinoutsEdit
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JTAG RecoveryEdit
Fixme This section is in need JTAG Recovery Instructions!


Serial PinoutsEdit
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Hyper terminal Setup in Windows XPEdit
In Windows XP, Click Start Button - All Programs - Accessories - 
   Communication - HyperTerminal
Enter a name for the connection, Click ok
Choose com port you adapter is plugged into, Click ok
 Bits per second = 115200
 Data Bits = 8
 Parity = none
 Stop bits = 1
 Flow control = none
Click ok
Click File - Save As, and select a place to save it to so you 
             don't have to enter the settings again.
Putty Setup in Windows XPEdit
After installing putty, run it
 Serial line = The COM port your using for serial (ie. COM3)
 Speed = 115200
Click on Serial under Connection
 Serial line to connect to = same as above (Serial line)
 Speed (baud) = 115200
 Data bits = 8
 Stop bits = 1
 Parity = None
 Flow control = None
Click Session
 Enter a name for your connection under saved sessions
Click Save
Click Open
Serial RecoveryEdit
Fixme This section is in need of Serial Recovery Instructions!

USB InfoEdit

vlan InfoEdit

Fixme This section is in need of cleanup!


TP-Link TL-WR841N v7.0b TP-Link TL-WR841N v7.0c TP-Link TL-WR841N v7.0d

TP-Link TL-WR841N v7.0e TP-Link TL-WR841N v7.0f

FCC PicturesEdit

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Hardware ModificationEdit

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