Can anyone tell me how to change Mac address in RedMi 2 Prime?

I want to change Mac address of RedMi 2 Prime mobile as my company Wi-Fi access is restricted to few Mac addresses only.

I rooted my mobile and tried BusyBox and Terminal...it didn't work!

This YouTube video suggests to edit the file .mac.cob in /efs/wifi..but this mobiles doesn't have the folder efs in Device...!!

This does have a folder wifi in Device/etc...and it has a file WCNSS_qcom_cfg.ini.It has Mac in Hex format.
The code for WCNSS_qcom_cfg.ini is available in Google Source


Lines 34 to 39
# Assigned MAC Addresses - This will be used until NV items are in place
# Each byte of MAC address is represented in Hex format as XX
Intf0MacAddress=000AF58989FF
Intf1MacAddress=000AF58989FE
Intf2MacAddress=000AF58989FD
Intf3MacAddress=000AF58989FC


I tried This tutorial also..but didn't work :(
Can anyone tell me how to change Mac..it would be appreciated

Thanks in advance
GRT_09