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How to Backup and Restore IMEI/NVRAM data on Mediatek Chipset Android Device

Alright, so you have an Android Device which has a Mediatek Chip inside. It looks like that you are not someone who uses their Android Device for basic tasks, you all are intelligent and are always willing to customize your device according to your needs and preferences. You must be quite familiar with rooting, flashing ROMs, Modding, Patching and there are chances that at some point you have got messed up with your Android Device.

How to Backup and Restore IMEI/NVRAM data on Mediatek Chipset Android Device

Well, one of the most common issues that the users face after installing a Custom ROM or flashing the firmware is the NULL or Invalid IMEI. We were getting a lot of requests from you guys on this. So here is GetDroidTips with a post on How to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device. So without any further, we do, let’s jump straight into it.

This is supported on MediaTek Processor with MT65XX, MT67XX and More.

How to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device

Here are 3 methods which you guys can use in order to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device. With that being said, let us take a look at our first method, should we?

Method 1: Using SP Flash Tool

Method 1: Using SP Flash Tool

Now, In order to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device using this method, you need to follow these steps carefully:

Note: You need the scatter file for your device as well. You can get scatter file from the Firmware package or can create it using MTK Droid Tools. 

How to Backup IMEI/ NVRAM data using SP Flash Tool

  • Open your Scatter File and search for NVRAM.
  • Now, note down the values of “physical_start_addr:” and the “partition_size:”
  • Run the SP Flash Tool on your PC.
  • Select the Scatter file for your Device and click on ReADBack.
  • Now, click on Add and double-click on the created file.
  • Here, choose any folder where you like to have your Backup File and click on save.
  • Now, enter the previously noted down “physical_start_addr:” and the “partition_size:” values into the Start Address and the Length text fields respectively.
  • Click on OK button and then click on the Read Back.
  • Now, Connect your Android Device to your PC via a USB Cable.
  • Wait for the reADBack process to get completed.
  • Once the process has been completed, you’ll get the Backup File, NVRAM.img in the selected folder.
  • That’s it!

How to Restore IMEI/ NVRAM data using SP Flash Tool

  • Open your Scatter File and search for NVRAM.
  • Rename the file from none to NVRAM.img and is_download: as from False to True.
  • Run the SP Flash Tool on your PC.
  • Select the Scatter file for your Device.
  • Here, select only the NVRAM.img file.
  • Now, turn off your Android Device and connect it to your PC via a USB Cable.
  • Click on the Download button.
  • Once the flashing process is completed, disconnect your Android Device and turn it back on.
  • That’s it! You have successfully restored your IMEI/ NVRAM Backup.

Now, let us take a look at our next method to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device, should we?

Method 2: Using ADB Fastboot

Method 2: Using ADB Fastboot

Now, In order to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device using this method, you need to follow these steps carefully:

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Note: You need to have ADB Fastboot Installed on your Device, you can follow our guide on How to Install ADB and Fastboot on Windows.

  • First of all, connect your Android Device to your PC via a USB Cable.
  • Now, on your PC, open the Command Prompt Window by pressing Win + R key and entering cmd.
  • Make sure you have the USB Debugging enabled on your Device. You can enable it by simply going to your Settings >> About Phone >> tap on the Build Number 7 times. Now go back to the Settings and tap on Developer Options and enable USB Debugging.

How to Backup IMEI/ NVRAM data using ADB Fastboot

  • Enter the following command on your Command Prompt Window to backup IMEI/ NVRAM.
md c:\nvbackup\
taskkill /f /im ADB.exe
ADB.exe shell su -c “dd if=/dev/nvram of=/data/local/tmp/nvram.img bs=5242880c count=1?
ADB shell su -c “chmod 0777 /data/local/tmp/nvram.img”
ADB.exe pull /data/local/tmp/nvram.img c:\nvbackup\nvram.img
  • Now open your File Explorer and navigate to C: – nvbackup – and you should find the NVRAM.img file here. This is the backup of your IMEI/ NVRAM.

How to Restore IMEI/ NVRAM data using ADB Fastboot

  • Enter the following command on your Command Prompt Window to restore IMEI/ NVRAM.
taskkill /f /im ADB.exe
ADB.exe push c:\nvbackup\nvram.img /data/local/tmp/nvram.img
ADB.exe shell su -c “dd if=/data/local/tmp/nvram.img of=/dev/nvram bs=5242880c count=1?
ADB reboot
  • That’s it, now your Android Device will reboot on its own. You have successfully restored the IMEI/ NVRAM backup on your Android Device.

Now, let us take a look at our last method to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device, should we?

Method 3: Using MTK Droid Tool

Method 3: Using MTK Droid Tool

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Now, In order to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device using this method, you need to follow these steps carefully:

  • First of all, download and install the latest version of MTK Droid Tools on your Windows PC. You can check our post on Download MTK Droid Tool [Latest Version Available]
  • Now, make sure you have the drivers for your Android Device installed on your PC.

How to Backup IMEI/ NVRAM data using MTK Droid Tool

  • Run the MTKdroidTools.exe file on your Windows PC.
  • Make sure you have the USB Debugging enabled on your Device. You can enable it by simply going to your Settings >> About Phone >> tap on the Build Number 7 times. Now go back to the Settings and tap on Developer Options and enable USB Debugging.
  • Now, connect your Android Device to your Windows PC via a USB Cable.
  • In the MTK Droid Tool, click on Root button to give ADB shell access.
  • Now, click on the IMEI/ NVRAM button.
  • Here, click on the Backup button to backup your device’s IMEI/ NVRAM.
  • That’s it! Your backup file would be stored inside the IMEI/ NVRAM folder under the MTK Droid Tool folder.

How to Restore IMEI/ NVRAM data using MTK Droid Tool

  • In the MTK Droid Tool, click on Root button to give ADB shell access.
  • Now, click on the IMEI/ NVRAM button.
  • Here, click on the Restore button to restore your device’s IMEI/ NVRAM.
  • Now, select the “.bin” and “.tar” files inside the IMEI/ NVRAM folder.
  • That’s it! You have successfully restored the IMEI/ NVRAM backup on your Android Device.

So that’s it guys, this was our take on How to Backup and Restore IMEI/ NVRAM data on Mediatek Chipset Android Device. We hope that you found this guide helpful. Just in case, if you have stuck somewhere between the steps or have any questions related to the topic, then feel free to leave them in the comments section down below.

Comments

  1. Hi Mr. Abhinav Jain,
    I bought two weeks ago one Blackwiew 9500 Pro from amazon.co.uk but it takes more than 25 hours to charge from 5% to 100% with the phone turned off and connected on cable and charger provided by the seller. If I turn on the phone the time for charging will be almost twice as long. While charging, phone only shows “slow charging” or “charging” message but never shows “fast charge” message. I also took the advice to turn off the app called “Intercom” and disable the PTT key on the left hand side of the phone but the phone still doesn’t want to accept the fast charge option. I sent the phone several times to factory state but no use. I’m thinking to send the phone back…
    I’ve tried several times to get in touch with after sale online service help (http://www.blackview.hk/contact-us/) but couldn’t get through…
    Another choice would be to re-write it’s OS entirely but I don’t know how I suppose to do that without losing the warranty of it.
    So if you have any other ideas that actually could help please advice.
    Many thanks before.

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