TP-Link TL-WA850RE & TP-Link TL-WA750RE

The TL-WA850RE and TL750RE are great because of there miniature size and wall-mounted design TL-WA750RE is a 10/100 Ethernet b/g/n 150M (one on-board printed antenna) TL-WA850RE is a 10/100 Ethernet b/g/n 300M (two on-board printed antennae)

Supported Versions

Model Version Launch Date OpenWrt Version Supported Model Specific Notes
TL-WA750RE V1 2013-04 BB (r38719) TL-AP123
TL-WA850RE V1 2012-12 BB (r38719) TL-AP123

Back to stock firmware

generic.uninstall

Warning!
This section describes actions that might damage your device or firmware. Proceed with care!

With the TL-WL850/750RE router, there is a catch: the stock firmware is obtained from the OEM: TL-WA850 TL-WA750

  • in case the file name of this firmware file does not contain the word "boot" in it, you can simply revert back to original firmware
  • in case the file name of this firmware file does contain the word "boot" in it, you need to cut off parts of the image file before flashing it:

An example of an image file with the word "boot" in it is wa850rev1_en_3_14_8_up_boot(140310).bin.

Cut the first 0x20200 (that is 131,584 = 257*512) Bytes from original firmware:

dd if=orig.bin of=tplink.bin skip=257 bs=512

You should transfer the firmeware image to the /tmp folder and revert back to original firmware (if availlable you can flash the firmware via the webinterface as well):

Via the safer method using sysupgrade:

sysupgrade /tmp/tplink.bin

Or you use the mtd method:

mtd -r write /tmp/tplink.bin firmware

OEM TP-Link firmware for the TL-WDR3500 with the boot part removed to revert to the original OEM firmware:

Hardware Highlights

Model SoC Ram Flash Network USB Serial JTag
TL-WA750RE AP123 Atheros AR9341@500Mhz 32 MiB 4 MiB 1 No Yes No
TL-WA850RE AP123 Atheros AR9341@500Mhz 32 MiB 4 MiB 1 No Yes No

Note: The case doesn't have any screws, but instead is ultrasonic welded together.

Manufacturer's site: http://uk.tp-link.com/

Forum thread: https://forum.openwrt.org/viewtopic.php?id=46859

Wireless

TL-WA750-REAR9341 hybrid chip, single-band 1x1:1 Mimo configuration

TL-WA850-REAR9341 hybrid chip, single-band 2x2:2 Mimo configuration

Hardware

Info

Model TL-WA750RE TL-WA850RE
Version 1 1
Instruction set: MIPS32
Vendor: Qualcomm Atheros
Bootloader: U-Boot 1.1.4
System-On-Chip: Atheros AR9341 rev 3 (MIPS 74Kc V4.12)
CPU/Frq 74Kc V4.12 500 Mhz
Target name ar71xx
Flash-Chip: Spansion FL032PIF
Flash size: 4 MiB
RAM: 32 MiB
Wireless: Atheros AR9341 2.4ghz 802.11bgn
Wireless Power: Maximal power output is 20 dBm (100 mW)
802.11n: 1 x 1 : 1 2 x 2 : 2
Power: 100-240V AC 0.3A
Serial: Yes
JTAG: No

Flash Layout

Please read the article Flash Layout for a better understanding. It contains a couple of explanations. Then let's have a view at flash layout of this particular device:

TP-Link WA850RE / WA750RE Flash Layout stock firmware
Layer0 spi0.0: 4096KiB
Layer1 mtd0 mtd1 mtd2 mtd3 mtd4
Size in KiB 128KiB 1024KiB 2816 KiB 64KiB 64KiB
Name u-boot kernel rootfs config art
mountpoint none none / none none
filesystem none none SquashFS none none

ART = Atheros Radio Test - it contains RF calibration data for the wifi. If it is missing or corrupt, wireless won't come up anymore.

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toh/tp-link/tl-wa850re.txt · Last modified: 2014/04/25 19:11 by friedzombie