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[GUIDE] Unlock Phone / Recover IMEI

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By josuelopezv, Senior Member on 26th June 2012, 05:38 PM
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ATTENTION:
I'm sorry I have been busy in the past months and let my xda account unattended. I currently don't own this device anymore. Anyways if someone wants to take over this thread and expand the tutorial by adding a video or photos are welcomed.


Caution:
THIS GUIDE IS INTENDED FOR ADVANCE USERS. A BACKGROUND KNOWLEDGE IS NEEDED. I RECOMMEND DOING SOME READING BEFORE TRYING THIS OUT.

This guide is to recover the IMEI. This happens when the LG Communication Partition has been corrupted, or you have a locked handset example locked to AT&T or any other provider.
Corruption of the IMEI is caused with a bug with the original Froyo firmware. This is provided in an internal use only document from LG but I failed to find the source.
Please be aware that you are dealing with the phone internal hardware and you can really mess up things. Continue at your own risk.

Requirements:
• Latest LG support usb drivers from the LG support site.
• Stock Rom preferably gingerbread v20p.
• Compressed file provided in the attachment section
• TI Omap driver included (OMAPFlashInstaller.msi)
• Infineon Driver included (FlashUSB_x86_x64_Drivers)

Flashing the CP and removing the SIM LOCK
1. Extract the files to a folder
2. Install the OMAP driver (OMAPFlashInstaller.msi) and the Infineon driver (FlashUSB_x86_x64_Drivers)
3. Shutdown your phone and remove the battery. Wait 5 seconds and insert the battery again.
4. Press and hold the “VOL+” and connect the USB cable to the computer and then while holding the VOL+ press and hold the PWR button until it vibrates. The phone should not boot up.
5. Let the TI OMAP drivers install
6. Open Windows Enabler.exe and activate it by clicking on the icon next to the windows system time at the bottom right.
7. Open SmartFlash.exe
8. Under the “Normal D/L” tab double click “Erase entire CP” verify that the checkbox its selected (this will erase the IMEI and any GSM locks)
9. Click on START and wait until it finish
10. Remove the battery and place it again
11. Press and hold the “VOL+” and connect the USB cable to the computer and then while holding the VOL+ press and hold the PWR button until it vibrates. The phone should not boot up.
12. Go to “ROM copy D/L” tab
13. In the “CP bin” choose the file included in "LGP940_CP.rar" (included in attachments)
14. click “Erase entire CP” verify that the checkbox its selected
15. Click on START and wait until it finish
16. Remove the battery and place it again and power on your phone (Write down the IMEI number under the battery it will be used later)
17. Flash a gingerbread KDZ stock rom

IMPORTANT: Some users are having issues with restoring IMEIS using roms that are not supported. If you have a p925 use a p925 KDZ and if you have a p920 use the p920 KDZ

Restoring the IMEI deleted from the previous steps
1. Connect phone by USB
2. Activate USB debug mode
3. Enter 3845#*920# or 3845#*925# or 3845#*760# depending on your model
4. Select Port Settings -> Select CP Image Download
5. A new device should appear at let it install
6. Open Tutty and select serial protocol. Click on open
7. Type AT if response is not OK, change port number (it is possible that when typing you don’t see any letters)
8. Type at%imei, it should display a dummy IMEI
9. Type at%imei=x,x,x,x,x,x,x,x,x,x,x,x,x,x,x where x,x,x... is your orginal IMEI number (found under the battery of your phone). It should response IMEI WRITE OK
10. Reboot phone


Common Issues:
- On step 9 notice that there is no coma at the end of the 15 digit IMEI number.
- The COM Port connection closes rapidly on certain devices to avoid timeout errors I recommend doing copy paste specially on step 9 also to ensure that you are writing a correct IMEI
- To avoid issues ensure you use a good USB Cable, dont be cheap!!.
- If the device doesn't see the omap device on Windows Device Manager even after enabling show ghost devices on windows you have a faulty motherboard.
- If after selecting the "CP Image Download" mode you see a new com port and gets rapidly disconnected you have a faulty modem thus a faulty motherboard. (Don't know how to fix this, I have only seen this on one device)

DON'T FORGET TO CLICK ON THE THANKS BUTTON

Thanks to IODAK
Attached Files
File Type: rar LG IMEI.part1.rar - [Click for QR Code] (4.96 MB, 30881 views)
File Type: rar LG IMEI.part2.rar - [Click for QR Code] (4.64 MB, 28351 views)
File Type: rar LGP940_CP.rar - [Click for QR Code] (4.73 MB, 22623 views)
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26th June 2012, 05:41 PM |#2  
Thanks:P
27th June 2012, 06:06 AM |#3  
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I followed the first steps "flashing the CP" and it seemed to go ok. I thought my IMEI may have been corrupt and it completely wiped it out.
I then went on to restoring and I'm not sure if a new device installed as outlined in step 5. I opened tutty and selected serial protocol adjusted port setting to the only port that would accept commands and got error at step 8 when I tried to display IMEI. I thought this was probably ok since I thought that I had just wiped this file clean and that I need to input the # again ( as in step 9) for it to be displayed.
I assume that in step 10 reset means reboot.

I still wasn't able to restore the IMEI though.
As I am typing this I read over your instructions again and think that I did not separate each number with a comma. Possibly this is the reason I wasn't able to restore? Right now I can't try again because I'm a noob and I've bricked my phone.
Thanks for your detailed instructions though.
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27th June 2012, 03:25 PM |#4  
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You can't start over and try again? At least restoring part?
Restoring IMEI
1. Connect phone by USB
2. Activate USB debug mode
3. Enter 3845#*920# in dialer if that doesn’t work try 3845#*925#
4. Select Port Settings -> Select CP Image Download
5. A new device should appear at let it install
6. Open Tutty and select serial protocol. Click on open
7. Type AT if response is not OK, change port number (it is possible that when typing you don’t see any letters)
8. Type at%imei, it should display your current IMEI
9. Type at%imei=x,x,x,x,x,x,x,x,x,x,x,x,x,x,x , where x,x,x... is your orginal IMEI number
10. Reset
27th June 2012, 03:34 PM |#5  
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Quote:
Originally Posted by vumanizer

I followed the first steps "flashing the CP" and it seemed to go ok. I thought my IMEI may have been corrupt and it completely wiped it out.
I then went on to restoring and I'm not sure if a new device installed as outlined in step 5. I opened tutty and selected serial protocol adjusted port setting to the only port that would accept commands and got error at step 8 when I tried to display IMEI. I thought this was probably ok since I thought that I had just wiped this file clean and that I need to input the # again ( as in step 9) for it to be displayed.
I assume that in step 10 reset means reboot.

I still wasn't able to restore the IMEI though.
As I am typing this I read over your instructions again and think that I did not separate each number with a comma. Possibly this is the reason I wasn't able to restore? Right now I can't try again because I'm a noob and I've bricked my phone.
Thanks for your detailed instructions though.

what error did you got?
the phone shoud not brick. try flashing through KDZ and try all the steps again.
27th June 2012, 03:37 PM |#6  
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Quote:
Originally Posted by slax81

You can't start over and try again? At least restoring part?
Restoring IMEI
1. Connect phone by USB
2. Activate USB debug mode
3. Enter 3845#*920# in dialer if that doesn’t work try 3845#*925#
4. Select Port Settings -> Select CP Image Download
5. A new device should appear at let it install
6. Open Tutty and select serial protocol. Click on open
7. Type AT if response is not OK, change port number (it is possible that when typing you don’t see any letters)
8. Type at%imei, it should display your current IMEI
9. Type at%imei=x,x,x,x,x,x,x,x,x,x,x,x,x,x,x , where x,x,x... is your orginal IMEI number
10. Reset

Yes you can start again from the restoring imei part. If you get and error when you input the imei probably is because you are putting more digits than it should (imei = 15 digits)

Don't forget the thanks button!
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27th June 2012, 11:03 PM |#7  
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Quote:
Originally Posted by josuelopezv

what error did you got?
the phone shoud not brick. try flashing through KDZ and try all the steps again.

After trying this I tried flashing another kdz over a previously corrupt installation and managed to make it even worse.
30th June 2012, 12:08 AM |#8  
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im sorry but im new on android but i have the necessary experience with phones and flashing... i have a question dos this work on usb connection or it need a box for this...??? one more question could you please assist me with the "Infineon Driver included (FlashUSB_x86_x64_Drivers)" and "Stock from preferable gingerbread" i have LG 925g locked on roger with v20c...


thanks.
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1st July 2012, 02:44 PM |#9  
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Quote:
Originally Posted by zerocold256

im sorry but im new on android but i have the necessary experience with phones and flashing... i have a question dos this work on usb connection or it need a box for this...??? one more question could you please assist me with the "Infineon Driver included (FlashUSB_x86_x64_Drivers)" and "Stock from preferable gingerbread" i have LG 925g locked on roger with v20c...


thanks.

this does not require any special cable or unlocking box, all the drivers are included in the attachments, stock rom in your case refers to v20c
3rd July 2012, 07:25 AM |#10  
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Can i change mi imei forma another one?

Enviado desde mi Amazon Kindle Fire usando Tapatalk 2
3rd July 2012, 03:45 PM |#11  
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Quote:
Originally Posted by ialv_88

Can i change mi imei forma another one?

Enviado desde mi Amazon Kindle Fire usando Tapatalk 2

No, you won't be able to change the IMEI first of all because it's illegal and second it will give you an error
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imei, o3d, p920, unlock

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