How to fix NVRAM error in all MediaTek devices

Guide to fix NVRAM WARNING err 0x10 and nvram warning err = 0x02. This is WiFi related issue and it shows NVRAM Error massage in the notificationbar.

Hi, Now we are talking on NVRAM error in Mediatek devices. This is WiFi related issue and it shows “NVRAM WARNING err 0x10 and NVRAM WARNING err = 0x02” massage in the notification-bar. 

First of all we know that What is NVRAM error and why is it come in our smartphones and MTK devices.  When we are updating Mediatek devices (Micromax, Gionee, Spice etc.) by SP Tool then SP flash Tool gives two option first firmware upgrade , second Format all + Download or Download only Rom. Firmware upgrade is safe option for update our phone but The most of Smartphone user want to install a fresh Rom, So they have to choose second option Format all + Download Rom.

Some time when you are using this process you may be lost IMEI number and get NV RAM error in your Smartphone. In this case you should know, How to resolve NVRAM error? So here is the solution of this NVRAM error NVRAM WARNING err 0x10 and NVRAM WARNING err = 0x02. As well as you should fix lost IMEI number issue. We are trying to make it easy, firstly we need a rooted phone if your phone is not rooted then find your root guide and root your phone or device.

How to Fix NVRAM Error by flash able zip:

Step 1: Download NVRAM Fix Zip and copy on your phone storage. Now got to custom recovery like TWRP and CWM etc. Then tap on install and select NVRAM FIX Zip file to flash. After flash successfully reboot your phone. that’s all.

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How to resolve NVRAM Error manually:

Step 1: First of all you need to install Root Explorer App or Root Browser App from Google play store on your device and download NVRAM Fix zip and extract it and also copy this NVRAM folder on the your phone SD Card.

Step 2: Open Root Explorer App and give it SU permission (see in image 1). We will see root directory and find here Data folder and tap on it for go inside. Now we will scroll and find nvram folder tap on it. Here we will see first folder is APCFG, in this folder we will find APRDEB folder. APRDEB folder have two WIFI file, first WIFI and second WIFI_CUSTOM (see in image 2), here we need to delete both file (see in image 3).


Step 3: Here we have done half process. Now we need to go on SD card and copy both file from NVRAM folder (see in image 4). Now we will go root directory and data folder then APCFG folder and open APRDEB folder and past both file here (see in image 5).

After copy these files, we will select both file for giving permission and tap on setting/menu icon then select permissions option (see in image 6). Now we will see popup of permission tab, see in image 7 and give permission then tap on OK. It’s done, we fixed your NVRAM error, now reboot your phone.

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Now turn on and connect WiFi. If your confirmed that your NVRAM error fix then first you should take a backup of your phone or device then after enjoy WiFi. We tested this method on Micromax A300 Canvas Gold and Micromax A110, A120. It is working well on these Smartphones. I hope this guide is easy for you. If you feel any problem then please comment us. Thanks.


  1. Hi, my Le2 X620 was full bricked and all lost IMEI, Radio, etc, after a full format and the stock rom 14s installation and then the eui 20s google integration rom everythinh was BACK again, i had just to update the original IMEIs with maui tool. Chears!
    to update the imeis you must use DB from flash, first button left, if you want to insist using other data base, the x600 BPLGUI works.

  2. Hello,
    I followed this guide with a Lenovo TB3-730X with no success. NVRAM WARNING ERR=0X02 is still present in the WIFI nerworks.
    Thank you

  3. imei and WiFi mac ID gets erased every time I flash a new Rom. I click on upgrade, not erase and flash. Any solution?

    1. Hi Ishtiaqe

      Once you get this issue on your phone then very rest or update, you must be fix very time your IMEI number and NVRAM issue. So you will always find both guide here.

  4. Thanks a lot for saying this procedure. My lenovo a7000a has got this issue of this nvram error and can u tell me the process to get my serial no of my mobile I lost that when I updated my lenovo device to 6.0 Android given by the lenovo plz..

  5. I lost my imei number as well but after restoring my phone it alwaz says nvram error also and imei is no more will u plz suggest me a way to overcome this as i m not able to set imei with any tool bcoz in dual mode setting the setting also didnot highlightthank u

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