TP Link Archer C9

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[edit] Hardware Specifications

FCC ID TE7C9
Industry Canada ID 8853A-C9
Power 12 VDC, 3.3 A
CPU Broadcom BCM4709 @1 GHz
Architecture ARM Cortex A9 (2 cores)
RAM / Flash (ROM) 128 MiB / 16 MiB
Switch Broadcom BCM4709
LAN/WAN ports 4 /1 @ 1 Gb/s
USB Ports 1x USB 2.0, 1x USB 3.0
JTAG internal
Serial internal, 4-pin header, 3.3V TTL
WI1 chip Broadcom BCM4360
WI1 protocols an+ac
WI1 MIMO config 3x3:3
WI1 antenna connector U.FL, RP-SMA
WI2 chip Broadcom BCM4360
WI2 protocols bgn
WI2 MIMO config 3x3:3
WI2 antenna connector U.FL, RP-SMA

The Archer C1900 is identical.

[edit] How to install DD-WRT

[edit] TP-Link Archer C9 v1

  • Ensure you have latest firmware from TP-Link
  • Download factory-to-ddwrt.bin from the tplink_archer-c9v1 directory from one of the links here.
  • Read New Build and model-specific threads to determine the stability of a given build.
  • Upload the dd-wrt firmware using the standard TP-Link UI and wait until router reboots
  • 30/30/30 hard reset


[edit] TP-Link Archer C9 v2

  • Ensure you have the latest firmware from TP-Link (tested with Archer C9(UN)_V2_160517)
  • Download factory-to-ddwrt.bin from the tplink_archer-c9v2 directory from one of the links here.
  • Read New Build and model-specific threads to determine the stability of a given build.
  • Upload the dd-wrt firmware using the standard TP-Link UI and wait until router reboots
  • Download the last appropriate dd-wrt firmware here
  • Upload the latest good webflash.bin build using the dd-wrt GUI found under Administration->Firmware Upgrade
  • DD-WRT v3.0-r30385 std (08/12/16) has been tested stable

[edit] TP-Link Archer C9 v3, v4

Device thread: https://www.dd-wrt.com/phpBB2/viewtopic.php?t=305884

WARNING: Enabling JFFS bricks the router: "That seems to nuke all the way up to 0xFEFFFF in the SPI flash."

  • TheDoc's fix for bricked v3/v4 is here.

[edit] Troubleshooting

Device Forum Thread: https://dd-wrt.com/phpBB2/viewtopic.php?t=282831

[edit] Bricked Router

Symptoms: all the LEDs are ON, and you can't access to UI

Follow these steps:

  • Switch off the router
  • Download a complete binary-image of firmware
  • Rename the downloaded firmware with the following name: archerc9v1_tp_recovery.bin or "archerc9v2_tp_recovery.bin" if you have a v2 router
  • Serve as TFTP server the renamed firmware on the following IP: 192.168.0.66
  • Switch on the router, holding the RESET button for 2-4 seconds
  • The firmware will be automatically downloaded and installed by the router

Symptoms: after the dd-wrt installation the MACs are changed!

[edit] Recovery Mode

The v3 CFE has a built-in Webpage Firmware Recovery mode for bricked routers: see TP-Link article.