Hi. While playing with TM stock UniFi router, I was able to Flash LEDE 17.01.4 to this TP-Link Router.

*NOTES : DO NOT FLASH THE LEDE FROM WEB BASED UPGRADE. USE TFTP INSTEAD.
**NOTES : This version does not support 5Ghz Wi-Fi, and partially support 2.4Ghz Wi-Fi
Files/Tools Used : https://blog.zulfahmy.net/downloads/tp_link_c5/

Reference : https://www.tp-link.com/my/download/Archer-C5.html#Firmware
Reference 2 : https://downloads.lede-project.org/releases/17.01.4/targets/bcm53xx/generic/

1. Connect to any LAN port in the router

2. Upgrade your router with latest version of firmware here. You can upgrade using web based for this firmware.
https://blog.zulfahmy.net/downloads/tp_link_c5/archer_c5v2_ms-up-ver3-17-1-P1%5b20161223-rel56572a%5d.bin

3. Make sure router is properly rebooted and up normally

4. Set your PC IP to :
IP : 192.168.0.66
Netmask : 255.255.255.0

5. Download LEDE Firmware Here :
https://blog.zulfahmy.net/downloads/tp_link_c5/ArcherC5v2_tp_recovery_LEDE_mod_by_mzulfahmy.bin

6. Start TFTP Server, rename the firmware to “ArcherC5v2_tp_recovery.bin” and put on root/main directory of TFTP Server.

For Windows you can use http://tftpd32.jounin.net/

MAC OS : Will update on next tutorial

7. Switch off router, push and hold RESET/WPS button until the WPS LED stop blinking and keep on.
*Keep pushing RESET/WPS button until the router is rebooted.

8. Wait up to 3 minutes to router up, change the static IP back to DHCP.

If the router does’t come with LUCI, you can install with the following commands

opkg update
opkg install luci-ssl

*Will update a tutorial on how I tweaked LEDE firmware to able be flashed on this TP-Link Router (Bypass FCC lockdown)

Post : Bypass FCC Lockdown on TP-Link Routers