Installing OpenWrt on TP-Link WR849N v5 & v6

[reinerotto]

Support for TL-WR840N Ver 6.0

Hi all. I have faced with a problem when i used iptables -t mangle... TTL --ttl-inc 1 command. The output was like there is no such a command like ttl. How to fix ttl in another way or how to make iptables work with ttl. I have read somewhere,that i have to install iptables-mod-ipopt and another one packet,but because this is the unofficial firmware i doubt that it might not get installed.

Here are 840-v6 patches for latest openwrt, I used in custom built image, to be flashed on 849-v6 (Brazil).
But image built only works for TFTP; sysupgrade does not work/finish.
Any idea ? May be, somebody else tried already ?