IMEI Problems, Backup, Restore, No service etc

IMEI Problems, Backup, Restore, No service etc

What is IMEI?
source:wikipedia
The International Mobile Equipment Identity or IMEI ( /aɪˈmiː/) is a number, usually unique,^[1][2] to identify3GPP (i.e., GSM, UMTS and LTE) and iDEN mobile phones, as well as some satellite phones. It is usually found printed inside the battery compartment of the phone. It can also be displayed on the screen of the phone by entering *#06# into the keypad on most phones.

Checking valid IMEI and other info?
http://www.imei.info/

Three parts :

• Backing up IMEI of your MTK phones
• Restoring your IMEI
• No Service Problem/Invalid IMEI

Backing up IMEI of your MTK phones
Credits:cybermaus

On Mediatek based phones (MT6516, MT6513, MT6573, MT6575 and MT6577) when flashing using flash tool, sometimes people loose their IMEI number.

Luckily, putting the IMEI back is not hard on Mediatek based smart phones. Though better yet is to back up your IMEI first. To backup, there are in fact several options:

Method 1) Use RootExplorer to copy file /data/nvram/md/NVRAM/NVD_IMEI/MPOB_001 to your external SD card. (or if that folder does not exists, try /nvram/md/NVRAM/NVD_IMEI/MPOB_001)
Personally, I would backup the entire /data/nvram/md/NVRAM/* just in case. I believe your WiFi and BT MAC are in there too, maybe some other stuff. I advise to have the entire directory snugly in a zipped file on your SD card!

Method 2) Back up using Mobile Uncle utility (actually, that did not work for me)

Method 3) Write them on a piece of paper. Very low tech, and very reliable
You need to first locate your IMEI of course:

IMEI 1 can be found inside battery compartment. It can also be found in menu Settings->About->Status->IMEI (ICS) or Settings->Status (GB). Or it can be found be entering *#06# into the phone.
IMEI 2 is sometimes listed alongside IMEI 1, but sometimes it is a bit harder. It may be visible from the phone's FACTORY bootup menu, if it has one. On my P700 based phone, it was also shown with *#06#
Also, some phones have the same IMEI for 1 and 2, and it may work, especially if the two SIM's are from different providers. It is my hope that in the posts following this one, people will be kind enough to post where to find IMEI 2 on their specific brands and models

Note that if you use someone else's IMEI, you will not benifid, your call cost *do not* magically appear on his account. All that will happen is that your phone may disconnect every time he turns on his phone. Additionally some countries like India block all 'made up' IMEI numbers. And some providers may push settings based on what they think is your brand/model phone based on its IMEI. So best to stick to the number that you were given!

Restoring your IMEI

Method 1) Use RootExplorer to copy back that backup MPOB_001 file from your external SD card into folder /data/nvram/md/NVRAM/NVD_IMEI/. (or if that folder does not exists, maybe /nvram/md/NVRAM/NVD_IMEI/.)
Afterward, set permissions to 0660 or rw-rw----

Method 1b) You can also generate your own MPOB_001 file on a PC, using this set of programs created by some clever russians called f_mulder & pvsurkov, and copy that file to above location. Generate using these commands on a PC:

Code:

imei.xxx <15digit_IMEI_1> <15digit_IMEI_2>

Method 2) Restore using Mobile Uncle utility (actually, that did not work for me)

Method 3) Install a cli terminal app, for example Android Terminal Emulator, and enter these commands:
(replacing IMEI_1 and IMEI_2 with the actual IMEI of course)

Code:

su
echo 'AT +EGMR=1,7,"IMEI_1"'> /dev/pttycmd1
echo 'AT +EGMR=1,10,"IMEI_2"'> /dev/pttycmd1

Method 4) If you have ADB running, the same as above, from windows adb:
(replacing IMEI_1 and IMEI_2 with the actual IMEI of course)

Code:

adb shell
su
echo 'AT +EGMR=1,7,"IMEI_1"'> /dev/pttycmd1
echo 'AT +EGMR=1,10,"IMEI_2"'> /dev/pttycmd1

No Service Problem/Invalid IMEI

1. Make sure you have rooted your mobile and have root explorer installed or similar in your mobile phone.
2. Next download this tool
3. Open a command prompt
---------------------
-Press windows key + R
-In the run box type in cmd
-press enter
-A black window will appear with writing

-Enter the following text:
imei.exe <15digit_IMEI_1> <15digit_IMEI_2>

You can use a valid IMEI or IMEI generator to generate random IMEI's using this tool

(eg: imei.exe 123456789111111 123456789111111)

Press Enter          


If both IMEI you gave are in correct format the file named MP0B_001_NEW will 
be created. Now you can put it on the sd and insert that in to the phone.

Run root explorer
Copy it to - system need r/w need to be on: 
/data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
and make sure you rename the file "MP0B_001_NEW" to " MP0B_001"

And finally REBOOT your phone.
Done.