TP-Link TL-WR741ND Wi-Fi client mode

I spent some time trying to make the wifi router run as a client, but to no avail. The only thing I saw in dmesg ifter enabling wifi was
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

It seems there's a number of people with similar problem.

Finally I located the fault in the device's default configuration:

config wifi-device  radio0
        option type     mac80211
#       option channel  11
        option hwmode   11ng
...

There seems to be a problem with the 802.11n mode, after changing the setting to just '11g' the client mode works as a charm.

Goodbye SamKnows, welcome OpenWRT

It's two years since I joined the SamKnows project, my obligations to them are fulfilled now so I flashed the whitebox with OpenWRT:

hajma@debian:~$ telnet 192.168.1.1
Trying 192.168.1.1...
Connected to 192.168.1.1.
Escape character is '^]'.

 === IMPORTANT ============================
  Use 'passwd' to set your login password
  this will disable telnet and enable SSH
 ------------------------------------------


BusyBox v1.18.4 (2011-05-09 13:23:52 BST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

                     _
 ___  __ _ _ __ ___ | | ___ __   _____      _____
/ __|/ _` | '_ ` _ \| |/ / '_ \ / _ \ \ /\ / / __|
\__ \ (_| | | | | | |   <| | | | (_) \ V  V /\__ \
|___/\__,_|_| |_| |_|_|\_\_| |_|\___/ \_/\_/ |___/
       P E R F O R M A N C E   M O N I T O R I N G

 OS: OpenWRT Bleeding edge, r26878
 SW: WR741ND Build
 -------------------------------------------------
root@(none):/# mount_root
root@(none):/# cd /tmp
root@(none):/tmp# scp hajma@192.168.1.2:Downloads/tplink.bin /tmp/

Host '192.168.1.2' is not in the trusted hosts file.
(fingerprint md5 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx)
Do you want to continue connecting? (y/n) y
hajma@192.168.1.2's password:
tplink.bin                                    100% 3840KB   1.3MB/s   00:03   

root@(none):/tmp# mtd -r write /tmp/tplink.bin firmware
Unlocking firmware ...

Writing from /tmp/tplink.bin to firmware ...    
Rebooting ...
Connection closed by foreign host.
hajma@debian:~$ telnet 192.168.1.1
Trying 192.168.1.1...
Connected to 192.168.1.1.
Escape character is '^]'.
 === IMPORTANT ============================
  Use 'passwd' to set your login password
  this will disable telnet and enable SSH
 ------------------------------------------


BusyBox v1.19.4 (2014-01-24 11:29:03 MST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 BARRIER BREAKER (Bleeding Edge, r39382)
 -----------------------------------------------------
  * 1/2 oz Galliano         Pour all ingredients into
  * 4 oz cold Coffee        an irish coffee mug filled
  * 1 1/2 oz Dark Rum       with crushed ice. Stir.
  * 2 tsp. Creme de Cacao
 -----------------------------------------------------
root@OpenWrt:/#