The Barrier Breaker image already includes a GUI, you do not have to install it manually.
Note: Newest version of tp link firmware (tested on TL-WR841N_V9_150310 / 3.16.9) does not accept openwrt firmware filename, so you have to rename the downloaded openwrt firmware to something what looks like stock firmware prior flashing, i.e. wr841nv9_wr841ndv9_en_3_16_9_up(150310).bin for V9 - check the zip with original firmware on tp link website for correct file name scheme - I'd suggest to remove “boot” word from filename, because openwrt firmware does not contain boot loader.
Warning! in some cases after reboot you don't have web interface (GUI), only telnet and ssh access. You can install GUI, for details see: luci.essentials, but before install LuCI (GUI) you need to configure your router to have access to internet, for configuration see: internet.connection
Lo que tenía con dd-wrt
y ahora no encuentro aquí: