Fix my WIFI issue in Arch Linux ( Antergos )

Hi, I have just installed Antergos OS on my Computer. The WiFi was working fine in Live mode without installing but after installation it is not working properly. Following this article I have also downgraded networkmanger now it shows the Wireless Networks but doesnt connect to anyone. Before it was not even showing Wireless Networks. [login to view URL] People says that the latest arch has changed wireless device identifier name from wlan0 to something another ( in my case it is wlp0s26u1u4 ) also output of "ip link" shows that wlp0s26u1u4 is DOWN. I tried to change the state to up but it does not work. Here is the output of "ip link" 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether e8:40:f2:3c:e6:04 brd ff:ff:ff:ff:ff:ff 3: wlp0s26u1u4: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000 link/ether 98:de:d0:09:e9:a1 brd ff:ff:ff:ff:ff:ff I will provide team viewer access. or you can just tell me the commands.