How To backup NVRAM on MTK MT67XX CPU’sNVRAM is a Most Important Partition of our Device, without This partition Device can’t Detect Network Signal So a backup of this partition is Must Require Before Doing or playing with the Device.The Process is Work on MT65XX Devices/ 6752/ 6732/ 6753/ 6735/ 8173/ 2601/ 6795 8163/8590/6580/6570/6752/ 6767/ 6765/ heliop10 /heliop20 /heliox10 /helio x20 /MT6737T/MT6735M and all other Latest Mediatek MT67XX device’s and able to backup 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.What We Need-.SP flash tools.PC and usb.scatter File take from ROM or create using MTK toolsHow to backup NVRAM on Mediatek MT67XX Devices-Step1- Now first you have to install your MTK drivers. If you have already installed drivers to your PC then leave this step.Step2- After driver installation download your scatter file, open that and Search for the word “NVRAM”.Step3- Note down the values of “physicalstartaddr:” and “partitionsize:” (different devices have different values. For coolpad note 3; values are 0x380000 and 0x500000 respectively.Step4- Now download Sp flash tool and open that. Select the scatter file and then click on Readback.Step5- After that click on Add and then double click on created file.Step6- Chose a folder to save this and name the file as nvram.img and click save.Step7- Then Fill the values noted previously to “Start Address” and,the”Length”. How To backup NVRAM on MTK MT67XX CPU’sStep8- Click OK, then click the “Read Back”, turn off your phone, connect your mobile phone to the computer using USB cable.
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Wait for the completion of readback process, you will get a NVRAM. Img file inside the folder selected above. How To backup NVRAM on MTK MT67XX CPU’sDONEHow to Restore-Step1-Open the your scatter file with Notepad and search the NVRAM.rename file name from “None” to “nvram.img” and isdownload:as “false” to “true”.Step2-Now open flashtool and select the modified scatter file and select only nvram.img. Click on Download. How To backup NVRAM on MTK MT67XX CPU’sStep3-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.Sharing is caring!
Stand for International Mobile Station Equipment Identity which is a unique 15 digit identity code of each phone. If you lose this code, you won’t be able to make any calls or track your Phone once its lost. The IMEI number is used by a GSM network to identify valid devices and therefore can be used for stopping a stolen phone from accessing that network. For example, if a mobile phone is stolen, the owner can call his or her network provider and instruct them to “blacklist” the phone using its IMEI number. This renders the phone useless on that network and sometimes other networks too, whether or not the phone’s SIM is changed. You can find you IMEI No by entering.#06# on the dialpad.
In this guide I’ll help you to restore your lost IMEI No. Which is generally lost due to installing custom ROM, using improper method for rooting etc. One can easily find your phone’s model through your IMEI No. Tested On Micromax Unite 2 (MT6582). Connect Phone to PC in USB debugging mode and install drivers.Step 3. For windows 8.1/8, move your mouse to top right corner and click on settings-power.
Now press and hold shift and click restart. From advance options select 7 to disable driver signing.Step 4. Once PC is restarted, press windows key+pause break to open system properties.Step 5.
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From left select device manager. From actions menu click add legacy hardware.Step 7. Click next and select Install the hardware that i manually. (advanced), click next, select show all devices, click next, click have disk, then browse, locate SPDrivers folder and select CDC-acm.inf, click open, click OK, select Mediatek Inc. And MediaTek USB VCOM (Android), Click next and next again, click finish. Refer below image.