Ubuntu – How to get a Atheros Communications Inc. AR9285 Wireless Network Adapter working

Hi ask ubuntu my wireless is not working so here is my info :
System Using : Lenovo Z570

$ iwconfig

lo        no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

eth0      no wireless extensions.

$ sudo ifconfig

eth0      Link encap:Ethernet  HWaddr f0:de:f1:54:34:a2  
          inet addr:192.168.2.2  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::f2de:f1ff:fe54:34a2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44257 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40079 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:43571495 (43.5 MB)  TX bytes:4926319 (4.9 MB)
          Interrupt:42 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5977 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5977 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:708983 (708.9 KB)  TX bytes:708983 (708.9 KB)

wlan0 is not showing in thils , but now when i try to use.

$ sudo ifconfig wlan0 up

SIOCSIFFLAGS: Operation not possible due to RF-kill

Now when i use this :

$ sudo rfkill list all

1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
2: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
4: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

Then i use command:

$ sudo rfkill unblock all

Then :

$ sudo rfkill list all

1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
2: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
4: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

Here phy0 Hard blocked = yes

Result was the same (then i again try to switch on/off wifi from keyboard by pressing Fn+F5 )

$ sudo rfkill list all

1: phy0: Wireless LAN
    Soft blocked: yes
    Hard blocked: yes
2: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
4: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

Now this time phy0 Soft blocked = yes as well as hard blocked : yes

Here is hardwares specs :

$ sudo lshw -class network

*-network DISABLED      
       description: Wireless interface
       product: AR9285 Wireless Network Adapter (PCI-Express)
       vendor: Atheros Communications Inc.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: 68:a3:c4:9a:7e:62
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=3.2.0-24-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:f1900000-f190ffff
  *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: eth0
       version: 05
       serial: f0:de:f1:54:34:a2
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8105e-1.fw ip=192.168.2.2 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:42 ioport:2000(size=256) memory:f1804000-f1804fff memory:f1800000-f1803fff