Anything about ROM Recover and Modding for Coolpade Note 3, Spice Mi 535 and Elephone Vowney Lite

Tuesday, November 10, 2015

How to backup your NVRAM partition

After backup of NVRAM partition you will have to no longer worry about losing Coolpad Note 3 or any other MT6595/6752/6732/6753/6735/8173/2601/6795/8163/8590/6580/6570 based device’s IMEI, MAC address, Bluetooth address etc. So, lets see How we may do that so if accidentally we lose IMEI, MAC etc. then we will be able to restore that back.
We will need following tools/files to this whole process:
1. Drivers
2. Sp flash tool
3. Scatter file
Now first you have to install your MTK drivers. If you have already installed drivers to your PC then leave this step.
After driver installation download your scatter file, open that and Search for the word “NVRAM”.
scatter file

Note down the values of “physical_start_addr:” and “partition_size:” (different devices have different values. For coolpad note 3; values are 0x380000 and 0x500000 respectively.

scatter addr
Now download Sp flash tool and open that. Select the scatter file and then click on Readback.

scatter loading

After that click on Add and then double click on created file. 

Chose a folder to save this and name the file as nvram.img and click save.

Then Fill the values noted previously to  "Start Address" and the "Length".

start address
Click OK, then click the "Read Back", turn off your phone, connect your mobile phone to the computer using USB cable. Wait for the completion of readback process, you will get a NVRAM. img file inside the folder selected above.
readback complete


How to restore back:
Open the your scatter file and search the NVRAM.rename file name from “None” to “nvram.img” and  is_download:as “false” to “true” .
scatter mod

Now open flashtool and select the modified scatter file and select only nvram.img.Click on Download. 

nvram restore
Turn off your phone; connect your mobile phone to the computer using USB cable. wait for the completion of download process, Disconnect your phone after process completion and restart your phone, you will find the lost MAC address, IMEI, Bluetooth, etc. have already come back.
Congratulations, you have successfully restored you lost MAC address, IMEI, Bluetooth, etc.

Video tutorial

About The Admin Of This Blog:

Author Of This Article

Hello, My Name Is Md Rajaul(Atrvscet@xda forum),the man behind,a blog dedicated to development of ROM,Recovery and Modding of Coolpad Note 3, Spice Mi 535, Elephone vowney lite etc.Goal of this blog is to collect and provide best available information related to these phones.

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  1. Please Give me Scratter file of Coolpad note 3....

  2. sir but still my wifi mac adress is different after restoring


    How to fix this error

  4. Can send me nvram backup from you k4 note? Plis help me sir i need this nvram for fixing my k4 after format and i lost imei and mac address,,

  5. Can send me nvram backup from you k4 note? Plis help me sir i need this nvram for fixing my k4 after format and i lost imei and mac address,,

  6. Help me to cpn3 mm recovery guide

  7. this scatter file can be used for coolpad note 3 plus too ? oronly coolpad note 3 ?

  8. Can't understand what you want to say. Please describe step by step. I want backup of IMEI and come to your blog but can't understand process because it is not clear. Some step is missing otherwise good work.

  9. Can't we back it up using twrp recovery

  10. I do not have a PC, is there a way to backup the needed y6 max NVROM to SDCARD using the android device itself?

  11. Can you send me a link with the scatter file for stock LEAGOO Z5 rom or an nvram backup, or both, because i accidentally deleted them and lost imei and can't find a way to change it.

  12. i did all above steps, it showed ok. then i disconnected my phone and now its not starting at all. no charging, nothing , what to do?
    please answer as soon as possible.

  13. i was trying to install 8676-I02 6.0 V22 image marshmallow update as given on this forum. so i installed the drivers on windows 7 ultimate laptop, it showed drivers installed, i did not attach phone to laptop while installing drivers, but laptop showed drivers installed. then i tried to backup nvram as described here, i did exactly as described, created file nvram.img and then clicked on readback button and i shut down my phone and attached it to laptop. laptop showed installing drivers, drivers installed and ready to use, and then sp flash tool showed ok, and green arrow. i checked the folder and nvram.img file was created in the folder. now i closed sp flash tools and disconnected the phone fro usb cable and tried to switch it on bit it did not start, there is no charging, phone is not showing anything. i had not enabled usb debugging.
    so please help regarding this. please look into the matter and reply fast.

  14. Yes! Thank you so much for this tutorial, it's more simple to restore al data... I needed to restore the IMEI's numbers after a ROM flash becouse I lost them. I used Engineer Mode MTK application for Android... it works, but is more complicated... and I don't know how to use that awesome tool to restore MAC, bluetooth address, etc...
    So, once again, thank you very much Rajaul!

  15. it does not work. still same problem. invalid imei, navram wifi warning. tested on MTK6737

    1. It will work if you have taken backup before rooting your phone or doing any modification with phone's system.If not working in your case use maui meta method to restore IMEI

  16. i dont find MT67xx fie on my phone.
    Can you help me?

  17. I don't find mt67xx file on my BL7000
    Can you help me ?

  18. I got this: "ERROR: STATUS_BROM_CMD_SEND_DA_FAIL (0xC0060003)
    [HINT]:" after the step "Click OK, then click the 'Read Back', turn off your phone, connect your mobile phone to the computer using USB cable. Wait for the completion of the readback process, you will get a NVRAM.img file inside the folder selected above."

    Any idea what this error means?

    1. Try to first click on the download with the phone not connected, then press the volume down on the phone, then connect to the PC and release the volume down when the red strip starts (with my doogee bl7000 it worked)

  19. Try to first click on download with the phone not connected, then press volume down on the phone, then connect to the PC and release volume down when the red stripe starts (with my doogee bl7000 it worked)

  20. My problem, however, is another: after unlocking the bootloader, I realized that I had already lost the imei. So I tried to continue to get the root permissions thinking that I would be able to fix (I thought: with the permission to root everything is possible), but after many days and nights I came to the conclusion that it could not be done. So with a lot of work (day and night) I managed to get back to the starting point (flash rom with sp flash tool and then even now I can choose between maui meta, sn write tool and typing from the phone keypad *#8813# and they all work to write the imei when the bootloader is locked).
    In theory now, applying the method described above should work, but does not work and I say so many, but many tests (I also tried with nvdata, to format the affected partitions, to do the flash from fastboot before nvram.img, then nvdata.img, then nvdata.img followed (without rebooting the device) from nvram.img ... is there any other proof I could do?

  21. Can u please provide me the backup of stock rom of coolpad note 3 which is accidendlt deleted by me and now it shows no os installed


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