One week after i brought my phone, I accidently formatted my device using sp flash tools and lost the IMEI/NVRAM. It has been a real pain for me to repair it because i was new to an mtk device. Finally figured out how to repair by doing many search. So I made this thread to share the working methods to help those people who are suffering from invalid IMEI :D
So let's start.
Always remember "Prevention is better than cure". If you are planning to flash a custom rom, First of all Backup your IMEI. Don't Trust that a custom ROM flash will not delete your IMEI number. because odds are it will. It's important to store your backup to external SD Card because while flashing some ROMs, it may also erase your internal memory.
So the best way to keep your IMEI number is to take my advise and make a backup.
DISCLAIMER: This guide is for educational purpose only. Changing IMEI number is illegal. Please don't misuse the guide.
IMEI Backup & Restore Methods
TUTORIAL-1
1. Mobile Uncle Tools:
Download Mobile Uncle ToolsUncle Tools
Open the App
Select IMEI BACKUP RESTORE (MTK)
Choose BACK UP TO SDCARD (MTK)
Reboot
> (to restore, choose restore from sd card)
TUTORIAL-2
2. MTK Droid Tools [PC Required]:
Switch on the phone and connect it to pc.
Go to settings->about phone.
Tap build number for 7 times.
Go back and enter developers options, and check usb debugging on.
Download MTK Droid Tools
Start MTK Droid Tools and click root.
Grant root permission in phone.
Click IMEI/NVRAM and click backup or restore as required.
> (to restore, choose the backup file from nvram backup folder)
Temporary IMEI Restore (without Backup)
(These are Temporary Methods, so you need to do this every time you upgrade Firmware, install a new rom, or doing a factory reset.)
TUTORIAL-3
1. Chamelephon
Download and install Chamelephon.apkOpen App
Type both IMEI Numbers
Click "Apply new IMEIs"
Reboot
TUTORIAL-4
2. MTK Droid Tools [PC, ADB Drivers Required]
Enable USB debugging
Open MTK Droid Tools in PC
Allow USB debugging in phone if asked
Click ROOT button in MTK droid tools
Click Yes and Grant/Authorize root permission in phone
Click IMEI/NVRAM option in MTK droid tools
Type both IMEI numbers
Select "Replace IMEI"
Click OK
Reboot!
TUTORIAL-5
3. NVRAM Wifi Error Fixing
1. Download "NVRAM Wifi Fix.zip"
2. Enter Recovery
3. Install the zip
4. Reboot
TUTORIAL-6
4. Flashing NVRAM.bin
(Recommended for Lolipop Roms )
Install SP flash tool
Download NVRAM.bin
Download Scatter file and load it
Now press download
Connect your phone without battery
Insert battery & turn on your device when you see the green tick.
Permanent IMEI Restore [without Backup]
TUTORIAL-7
1. Maui META 3G Tool
(confirmed working on kitkat stock rom)
Download Maui META 3G Tool
Install "Maui META 3G Tool" on your PC
Click "Options ? Connect Smart phone into META mode"
Click on Reconnect button
Switch off your phone
Connect via USB Cable
Change "Get Version" to "IMEI Download"
Click "Change NVRAM Database file"
Download & extract "NV Ram Database Files.rar"
Select "BPLGUInfoCustomAppSrcP_MT6582_S00_MOLY_WR8_W1315_MD_WG_MP_V5_1_wg_n"
Type both IMEI numbers
Click "Download to flash"
Click "Upload from flash"
Close the IMEI Download Tab
Disconnect
Switch on the phone.
Didn't got detected? Do a factory reset and then try again.
Not fixed yet?? Make sure that you installed drivers properly. (Watch the below added video. )
TUTORIAL-8
2. IMEI & SN Writer
(Confirmed working on lolipop stock rom)
1. First of all download sn write station tool v1.5.3--20121018.
2. Now extract your stock rom.
3. Now run sn write station tool and select smartphone from platform drop-down option.
4.Select usb instead uart mode.
5. Now tick on sn and wifi only under write item section.
6. Now write your serial number of your device in sn textbox.
7. In wifi textbox write your wifi mac address without colon. after correct wifi address written a green tick will appear.
( To know your correct wifi address go to setting>wifi> option advance>MAC address>
here you will see your correct address write down on sn tool without colon.)
8. Now select db file from extracted rom. name of file is APDB_MT6582_S01_L0.MP2_W15.09
9. Now click on start.
10. Now tick usb debugging in device and switch off your device and connect to computer with battery.
11. in sn write tool it will show successful
12. Sometimes sn write tool switch on your mobile in meta mode but don't write sn and wifi address. Just unplug your device and reconnect it with same condition in which you plup out your device..
if it is in on (boot logo) situation then connect it as it is. otherwise connect it again in switch off mode again.
13. Sn write tool do its work. after successful unplug your device and restart your phone.
So let's start.
Always remember "Prevention is better than cure". If you are planning to flash a custom rom, First of all Backup your IMEI. Don't Trust that a custom ROM flash will not delete your IMEI number. because odds are it will. It's important to store your backup to external SD Card because while flashing some ROMs, it may also erase your internal memory.
So the best way to keep your IMEI number is to take my advise and make a backup.
DISCLAIMER: This guide is for educational purpose only. Changing IMEI number is illegal. Please don't misuse the guide.
IMEI Backup & Restore Methods
TUTORIAL-1
1. Mobile Uncle Tools:
Download Mobile Uncle ToolsUncle Tools
Open the App
Select IMEI BACKUP RESTORE (MTK)
Choose BACK UP TO SDCARD (MTK)
Reboot
> (to restore, choose restore from sd card)
TUTORIAL-2
2. MTK Droid Tools [PC Required]:
Switch on the phone and connect it to pc.
Go to settings->about phone.
Tap build number for 7 times.
Go back and enter developers options, and check usb debugging on.
Download MTK Droid Tools
Start MTK Droid Tools and click root.
Grant root permission in phone.
Click IMEI/NVRAM and click backup or restore as required.
> (to restore, choose the backup file from nvram backup folder)
Temporary IMEI Restore (without Backup)
(These are Temporary Methods, so you need to do this every time you upgrade Firmware, install a new rom, or doing a factory reset.)
TUTORIAL-3
1. Chamelephon
Download and install Chamelephon.apkOpen App
Type both IMEI Numbers
Click "Apply new IMEIs"
Reboot
TUTORIAL-4
2. MTK Droid Tools [PC, ADB Drivers Required]
Enable USB debugging
Open MTK Droid Tools in PC
Allow USB debugging in phone if asked
Click ROOT button in MTK droid tools
Click Yes and Grant/Authorize root permission in phone
Click IMEI/NVRAM option in MTK droid tools
Type both IMEI numbers
Select "Replace IMEI"
Click OK
Reboot!
TUTORIAL-5
3. NVRAM Wifi Error Fixing
1. Download "NVRAM Wifi Fix.zip"
2. Enter Recovery
3. Install the zip
4. Reboot
TUTORIAL-6
4. Flashing NVRAM.bin
(Recommended for Lolipop Roms )
Install SP flash tool
Download NVRAM.bin
Download Scatter file and load it
Now press download
Connect your phone without battery
Insert battery & turn on your device when you see the green tick.
Permanent IMEI Restore [without Backup]
TUTORIAL-7
1. Maui META 3G Tool
(confirmed working on kitkat stock rom)
Download Maui META 3G Tool
Install "Maui META 3G Tool" on your PC
Click "Options ? Connect Smart phone into META mode"
Click on Reconnect button
Switch off your phone
Connect via USB Cable
Change "Get Version" to "IMEI Download"
Click "Change NVRAM Database file"
Download & extract "NV Ram Database Files.rar"
Select "BPLGUInfoCustomAppSrcP_MT6582_S00_MOLY_WR8_W1315_MD_WG_MP_V5_1_wg_n"
Type both IMEI numbers
Click "Download to flash"
Click "Upload from flash"
Close the IMEI Download Tab
Disconnect
Switch on the phone.
Didn't got detected? Do a factory reset and then try again.
Not fixed yet?? Make sure that you installed drivers properly. (Watch the below added video. )
TUTORIAL-8
2. IMEI & SN Writer
(Confirmed working on lolipop stock rom)
1. First of all download sn write station tool v1.5.3--20121018.
2. Now extract your stock rom.
3. Now run sn write station tool and select smartphone from platform drop-down option.
4.Select usb instead uart mode.
5. Now tick on sn and wifi only under write item section.
6. Now write your serial number of your device in sn textbox.
7. In wifi textbox write your wifi mac address without colon. after correct wifi address written a green tick will appear.
( To know your correct wifi address go to setting>wifi> option advance>MAC address>
here you will see your correct address write down on sn tool without colon.)
8. Now select db file from extracted rom. name of file is APDB_MT6582_S01_L0.MP2_W15.09
9. Now click on start.
10. Now tick usb debugging in device and switch off your device and connect to computer with battery.
11. in sn write tool it will show successful
12. Sometimes sn write tool switch on your mobile in meta mode but don't write sn and wifi address. Just unplug your device and reconnect it with same condition in which you plup out your device..
if it is in on (boot logo) situation then connect it as it is. otherwise connect it again in switch off mode again.
13. Sn write tool do its work. after successful unplug your device and restart your phone.