HOW TO FIX NVRAM AND WIFI ERROR 0X10

This post will guide you how you can fix ‘nvram warning :err=0x10’ in custom rom on most Android and xolo a500s device, this could be solved with a simple procedure by using a HEX editor on your computer..
This is a very easy and working solution for NVram warning :err = 0x10

• First of all turn on your wifi from settings.
• Go-to About > Status (under settings) and Find out MAC address of your device (It looks like xx:xx:xx:xx:xx:xx)
• Turn off WiFi adapter on your phone.
• Run Total Commander App on your device or you can use any kind of Root explorer.
• Navigate to root/data/nvram/APCFG/APRDEB and copy a file named
  WIFI to your SD then computer ( I am using WIFI transfer so do not need to copy it to my own SD)
• Now open that File in Hex Editor
• Navigate to First Row Column number 4 to 9 insert your MAC address as per step 2.
• Now over save the file and save it on same path (overwrite it)
  Reboot your phone and check your WIFI by Turning it on. If you want to skip this all steps then just download Repaired WIFI file from below but we will be not responsible if any damage this file cause to your Android device.