TP-Link TL-WR850N v1
The device is a wireless N router with
- 2 fixed antennas
- 4 Port 100/10 Switch
- 1 Port 100/10 Wan Interface
- 8 MB Flash
- 64 MB Ram
- WPS Button
Note1:
The TL-WR840N v4 as well as TL-WR850N v1,v2 & v3 are identical. But TL-WR850N v3 (4/32) can not be supported.
Supported Versions
Hardware Highlights
Installation
As This two devices are identical to TL-WR840N v4(EU). We can use TL-WR840N v4(EU) Openwrt Firmware without any pain.
→ Install OpenWrt (generic explanation)
To burn the OpenWrt firmware in to the TL-WR850n v1 & v2, you will need to setup a TFTP server in a local machine.There are several different TFTP server options to download and run, all you need to do is find the one that better suits you. The TFTP server, after installed, need to be configured to work on IP 192.168.0.66 (port 69). Insert the firmware file inside the TFTP server folder and follow the instructions below:
- Run the TFTP server and add the firmware file in the folder. Rename the firmware file to
tp_recovery.bin
(otherwise the router won't find it). - Connect the router (while it's turned off) by one of the LAN ports to the machine running the TFTP server.
- Press and hold the reset button while turning on the router. The router will search for the TFTP server and download any
tp_recovery.bin
file that it finds out. While the file is being transferred, the router's LEDs will start to blink. - If the download is successfully done, the router will automatically burn the new firmware and restart itself.
Flash Layout
/proc # cat mtd dev: size erasesize name mtd0: 00020000 00010000 "boot" mtd1: 00140000 00010000 "kernel" mtd2: 00660000 00010000 "rootfs" mtd3: 00010000 00010000 "config" mtd4: 00010000 00010000 "romfile" mtd5: 00010000 00010000 "rom" mtd6: 00010000 00010000 "radio"
Return to Official TP-Link Firmware
Note2:
OEM firmware is not available for TL-WR850N v1. Since the device is identical to TL-WR850N v2. We can use v2 OEM firmware using following process
Restoring the router to its official Firmware you'll have to modify the file from TP-Link in order to remove the 512 byte header. Follow the instructions:
- Go to TP-Link official site and download the firmware file you want.
- After downloaded the file, use the command
dd if="TL-WR850Nv2_example_official_firmware_file.bin" of="tlwr850nv2_file_with_removed_header.bin" bs=512 skip=1
The second name here can be whatever you want, since it's just a name for the resulting file generated by the command. - Now that you have the valid firmware file, rename it to
tp_recovery.bin
and place it in the TFTP server folder to burn it on the device.
Hardware
Info
Versions | v1 | v2 |
---|---|---|
Instruction Set | MIPS 24Kc | |
Vendor | MediaTek | |
System-On-Chip | MT7628NN 1850-AJCJL EAP1J400 | MT7628NN 1706-AJCSL EAP0W363 |
CPU Frequency | 580MHz | |
BogoMIPs | 386.04 | |
Flash-Chip | GigaDevice GD25Q64CSIG | |
Flash Size | 8MB | |
RAM-Chip | ESMT M14D5121632A-2.5B | |
RAM-Size | 64MB | |
Wlan Hardware | MediaTek MT7628N | |
Switch | MT7628N built-in | |
Serial | Yes | |
JTAG | Yes |
Opening the case
Serial
Serial pins are exposed on board and labeled,standard 0.1“ header can be soldered.
- Bits per second: 115200
- Data bits: 8
- Stop bits: 1
- Parity: None
- Flow control: None
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