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[GUIDE] Unlock Phone / Recover IMEI

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scudstorm

New member
Mar 5, 2014
1
1
LG optimus p920

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 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

OK I've completed all the previous step but stopped here
When I enter my IMEI in Nutty it keep saying IMEI ERROR
I'm pretty sure that I'm typing the digits correctly
I've already restored my IMEI the problem is another IMEI SV is 00

Please could you respond to my request

Thanks in advance :angel:


DON'T FORGET TO CLICK ON THE THANKS BUTTON

Thanks to IODAK[/QUOTE]
 
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peamealbacon

New member
Feb 10, 2014
4
0
The stock KDZ for my phone is pretty much completely unavailable. Would this work with cyanogenmod or something? (Unless anyone has the p925 v20c KDZ hanging around)
 

haroz

New member
Jun 11, 2014
1
0
lg su540

Can i use this guide with LG SU540 (version Prada)? in the firth page i see that the file used it's named "p920", can i use this file with my phone??
please can someone post me a link with the guide to Flash a gingerbread KDZ stock rom? i'm downloading the su540 KDZ file but i don't know how to use it in a good way
Thanks a lot!
 

Raziel316

New member
Jun 14, 2014
2
0
P720h

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


hello, does the P94 CP work in a p720h?

thanks
 

Umbreye

New member
Jul 29, 2014
1
0
Help!!

I'm still needing help,
When I enter Port settings and select CP Image Download, I hear a disconnect sound and connect sound (on Windows 7)
Then i go back in Port settings and it's on CP USB again? :confused:

I don't know what to do here, TuTTy shows a command prompt but i can't type anything in there. (A weird Green Bar)

Please help, i need my phone working. :(

p920
 
Last edited:

realbabilu

Member
Apr 1, 2011
38
3
Thank you it works.

Note:
First
The author is clearing the imei with the Clear CP. or resetting
The author is injecting 940 baseband for a bait.
So the KDZ reflashing with LGmobile support tools is a must for resetting back to P920 original baseband.
The imei inserting is using the com port that not listed on device manager, and without KDZ stock flashing, it will never came up with port.
it is not the same port for flashing.
That port, for me, is port 5. then can be injecting at%imei= ....
 

mackeki

Member
Apr 8, 2013
6
1
Bogota
Please, this guide works on LG OG-E975?

Hello master, greetings, maybe this guide works on LG O E975? suddenly my IMEI turns in "0" after I flashed the E97510H_00.kdz :(
Thanks in advance if You please help to recover my phone. Actually is working everything but the phone signal is not, the other functions are running very well with WiFi (wifi, bluetooth, camera, play store with my gmail account and the apps , chats, etc) but the IMEI is "0"
Check the images I posted please:

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
 

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acd_ex

New member
Mar 2, 2015
3
2
Athens
Similar procedure for L7 P705?

Is there a similar thing I can do with a LG L7 P705?
I bought it off the net and it's locked to it's previous carrier.
Tried all possible solutions but no luvk.
Currently running CM11.

Thanks in advance...
 
Dec 23, 2014
13
0
Custom rom and IMEI

The question is as simple as it can be i'm custom rom cm10 and the problem is same unknown IMEI can I just go over the IMEI recovery steps i mean recover IMEI without having to go to stock or flashing some kdz files.
 

cyclonmaster

Senior Member
Mar 27, 2011
447
44
cyclonmaster.blogspot.com
Using Windows 7 x64 Pro.
Follow all step, flash V21D <-stock gingerbread.
4. Select Port Settings -> Select CP Image Download
5. A new device should appear at let it install

at this stage, it did install new device which is "Intel(R) USB Flash Loader utility"
Is this correct?

Now I stuck at this stage:

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

What is the name of the serial port suppose to be? LGE CDMA USB Serial Port? LGE Android Platform USB Serial Port?
I had no serial to select under tutty after Select CP Image Download. Any hints?

Thank you.
 

Ranbir80

New member
Jun 17, 2015
1
0
Adding IMEI

tried this

type this : where 11111111111111 are you imei number no need of commas...
at%imei=111111111111111

OK
at%imei=111111111111111
IMEI WRITE OK

OK

but it did not solve the problem. sim is still undetected :D:confused::confused:
 

HamidZaeri

Senior Member
Sep 21, 2014
90
13
I can't select "CP Image Download" mode, always CP dl mode
And I can't flash any via smart flash tool and LGFlashtool.
It always says error communicating with IFX Modem!
How can I fix my IMEI or flash a new rom (KDZ or ap,cp)
 

tudor.raneti

Member
Aug 10, 2017
21
0
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

I have P920, no IMEI, possibly wrong baseband (L6260_MODEM_SIC_01.1042.00)

I've done the above steps so that at%imei (all caps are needed), shows my actual IMEI which I set from the back of my phone.

I rebooted and phone still shows no IMEI. What am I suppose to do?

P.S. Phone doesn't want to enter download mode no matter what I push, so I can't install kdz's. I'm installing roms using CWM...
 

josuelopezv

Senior Member
Feb 18, 2011
146
226
Heredia
I have P920, no IMEI, possibly wrong baseband (L6260_MODEM_SIC_01.1042.00)

I've done the above steps so that at%imei (all caps are needed), shows my actual IMEI which I set from the back of my phone.

I rebooted and phone still shows no IMEI. What am I suppose to do?

P.S. Phone doesn't want to enter download mode no matter what I push, so I can't install kdz's. I'm installing roms using CWM...
you need to have the original base band and firmware of the first release of your phone for this to work. they have patched the flaw
 

tudor.raneti

Member
Aug 10, 2017
21
0
you need to have the original base band and firmware of the first release of your phone for this to work. they have patched the flaw

Think flashing v10 will help? I've flashed v20d lately, supposed to be latest original firmware for p920. Now tutty refuses to start... and IMEI still not existing

P.S. I've used this handy tool to extract bin and fls from kdz: https://forum.xda-developers.com/showthread.php?t=2245469

Perhaps I'll try v10L (my original phone was from Orange): https://lg-roms.com/official-firmware/LG Optimus 3D-LGP920/V10L/FRANCE

Also I've made a CWM restore point which refuses to restore under any circumstance :-/

EDIT: after flashing bootv21e from the guides, I can enter download mode as in the pictures

EDIT2: after flashing v10L with this lg flash tool: https://forum.xda-developers.com/showthread.php?t=2797190
and recovering from bootloop with this: https://forum.xda-developers.com/showthread.php?t=2426426
everything seems to be back to normal, imei files rebuilt, phone signal... had to spam tutty to start properly seeing the right port (15), then spammed at%imei to set it because it gave me error or ignored me :) IMEI set properly too now...

Last problem is, how to properly flash an updated firmware for LG 920 w/o losing any functionality. Also, are v2, v3, v4 firmwares for LG better for it's battery life?
 
Last edited:

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  • 107
    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
    4
    I've been trying everything and I still can't get the "AT%IMEI" command to work. I wonder if its a driver problem, although I've tried installing all sorts. Someone please help :(

    Edit - got it fixed. I used the info provided by XBSA and had a play around as well. If you are on ICS404, the guide is a little different

    1. Set phone to Settings > Connectivity > USB connection type > LG Software. Connect phone to PC by USB and let the drivers install. No need to download LG PC Suite
    2. Activate USB debug mode
    3. Enter 3845#*760# in dialer
    4. Select Port Settings -> Select CP USB
    5. A new device should appear. 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

    Like most of these guides, so simple once you've done it but horrific when you can't figure it out. Such small details can make a huge difference if you're a bit n00bish

    Also thanks to Pesach85 for being cool and responding to my PM so quickly
    2
    Hi!

    While trying to flash XBSA 404 (original) I had some problems with OMAP drivers and flash didn't finish sucessfully...

    I have my IMEI but no MAC bor WIFI and Bluetooth...

    In OP it says "recover MAC"... How???

    thanks!!!

    For wifi mac same procedure as for imei but use
    at%mac=
    For bt mac
    at%btad=


    Sent from my LG-P920 using xda app-developers app
    2
    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!