1. downgrade office firmware

http://code.taobao.org/svn/hopol-bak/K2/phicomm/K2/SW_K2_703004657_V22.4.2.8.bin

2. enable ssh service only

http://code.taobao.org/svn/hopol-bak/K2/tianbaoha_breed_ssh.dat

please change the default password 'tianbaoha' and disable telnet service which is not safe

3. burn bootloader 'breed' into flash

http://www.right.com.cn/forum/thread-161906-1-1.html
下载地址

CPU MediaTek MT7620A ver 2, eco 6
内存  64MB DDR2
Flash   Macronix MX25L6435E @ 24MHz (8MB)
以太网 MediaTek MT7620A built-in 5-port 10/100M switch
时钟频率    CPU: 580MHz, Bus: 193MHz
编译日期    2016-07-29 [git-5855789]
版本  1.0 (r928)

Note: The flash size of Phicomm K2 is only 8M. So the firmware size can't greater than 8M.

4. burn third party firmware into flash

• pandorabox
  下载地址

• padavan
  下载地址

5. kcptun

Kcptun Server一键安装脚本
kcptun使用教程