how to change mac address with terminal emulator

I tried to follow the method every thing is ok but when i tried to change Mac address i observed that in settings it is showing wifi mac addrrees unavailable. Android some how restricts to even send the data after checking the MAC. This changes the mac but wifi refuses to connect it says authentication problem.

How much time mac address will change for android? Plzz tell me whatsapp hacking by mac address I need it. Also i will go change my ip address and doing that i can get a bit of wifi then i can mac spoof then i can do what i want to do. So, have you ever changed the MAC address on your Android device? How did you do it? Also, if you know of any other method to change the MAC address on an Android device, do let us know about it in the comments section below. Once you have the new MAC address you want to use, just follow the steps below.

Write it down, in case you need to revert your MAC settings back to their original state. MAC address, or the Media Access Control address is a unique address assigned to the network interface of a device. Category : Android terminal emulator permission denied

How to change mac address with terminal emulator