Related
My sister bought it from SPRINT US, and her friend help her to unlock it but he failed, i don't know what did he do?
And now she gave it to me for unlock, i'm surfing on the internet and i found this topic http://forum.xda-developers.com/showthread.php?t=2282683
i'm trying to unlock it, but when enter *#0011# this service mode appear, but no information display .
After that i'm checked her phone, I seen IMEI NULL, and BASEBAND UNKNOW :crying:, please help me, what should i do now for repair it ?
i know it used Qualcomm Chip, because i see the word "Qualcomm 4G" on the jack 3.5mm
will520 said:
My sister bought it from SPRINT US, and her friend help her to unlock it but he failed, i don't know what did he do?
And now she gave it to me for unlock, i'm surfing on the internet and i found this topic http://forum.xda-developers.com/showthread.php?t=2282683
i'm trying to unlock it, but when enter *#0011# this service mode appear, but no information display .
After that i'm checked her phone, I seen IMEI NULL, and BASEBAND UNKNOW :crying:, please help me, what should i do now for repair it ?
i know it used Qualcomm Chip, because i see the word "Qualcomm 4G" on the jack 3.5mm
Click to expand...
Click to collapse
The same to U: I restore stock firmware SPH-L720 , S4 my phone still lost baseband and Imei ,MEID unknown , Can anyone help me? any solution? thanks :crying:
Do you have any signal from the tower or is it a circle with a slash through it?
oscarthegrouch said:
Do you have any signal from the tower or is it a circle with a slash through it?
Click to expand...
Click to collapse
i have same problem
:crying:
If I were experiencing this, with my limited knowledge, I would flash with Odin back to stock mdc and do a full factory reset. If after that there wasn't any network connection, I'd call Sprint customer service number from a land line and ask them to walk me through programming the phone properly. I'd probably tell them the phone kept freezing up so I did a full factory reset and now the phone refuses to connect on the network. Maybe something unknown happened and something got erased during the reset and needs to be entered manually again. I'm not saying this is what you need to do but I'm saying that this is what I would do if it happened to me. I do not claim to know what I'm talking about either but it sounds like the most logical thing to me to do.
Because we didn't get a full restore for this it may be an issue.
I'll see if I can make a better package to hopefully fix that.
Bump, is there no fix for this yet?
This is why you do a efs back up
Sent from my SPH-L720 using xda app-developers app
efs backup
Try This
In the meanwhile,
Read this.its for an S2,but the same concept applies.
http://forum.xda-developers.com/showthread.php?t=1264021
Solution
Just flash old MDC tar such L720VPUAMDC_L720SPTAMDC_L720VPUAMDC_HOME.tar.md5
You should get signal back
then use DFS Tool to restore MEID & ESN & IMEI if you lost then.
maethem said:
Just flash old MDC tar such L720VPUAMDC_L720SPTAMDC_L720VPUAMDC_HOME.tar.md5
You should get signal back
then use DFS Tool to restore MEID & ESN & IMEI if you lost then.
Click to expand...
Click to collapse
Agreed. Whenever I have imei problems I reflash the modem, when you do this it rebuilds the NV files and such.
If you still feel like you need the Service Mode Menu you may need to navigate to efs/carrier/ and edit the hiddenmenu file with a text editor to ON instead of OFF . If this doesn't work then google the subject and you will find your answers.
my imei null and this is by restarting the phone. how to solve this?
baseband version is unknown
1- baseband version is unknown.
2-imei null
the phone is just restarting. someone help me.
Model: D802 32gb open
EFS. Hope you backed it up... if not, search forums, going to take a lot of manual work in diag mode along with a couple other apps via pc port to rewrite your IMEI.
Steamer86 said:
EFS. Hope you backed it up... if not, search forums, going to take a lot of manual work in diag mode along with a couple other apps via pc port to rewrite your IMEI.
Click to expand...
Click to collapse
need help bro how enter diag mode ?
I have same issue and backed up my efs but stock recover just reboots. No signal or WiFi. I was able to use the LG tool and go back to a stock Rom but it didn't work.
Sorry can't help but maybe this will?
http://forums.androidcentral.com/google-nexus-4/310644-n4-imei-0-help.html
my phone keep reboot and not working usb debug mode stable imei null ı have backup via octopus box sec zone and nwm but ı cant write back becuse phone want root but ı cant make root phone reboot semi bricked ı need a way restore backup or need special mode any one help ? stock recovery not working only android logo
This link help u for who phone restarted like me and had efs backup (modemst1 and modemst2 img bkup) :
http://forum.gsmhosting.com/vbb/f799/d802-restart-imei-null-solution-here-1763754/#post10009304
This happened to me a long time ago on my T-Mobile version and I tried everything I could think of but then I used the tool that you'd use to flash back to stock and flashed it to Android 4.4 and it kinda fixed it so now it doesn't restart much might restart every 20 minutes I never looked at it 4 that long becauseiI bought the international version. So android 4.4 doesn't fix the null imei but now I can use my phone as a media device because it doesn't read Sim cards and at least I can connect to wife so yea
http://www.droidviews.com/how-to-backup-and-restore-lost-imei-on-lg-g2/
Try this? Never had to though
evandrovendas said:
1- baseband version is unknown.
2-imei null
the phone is just restarting. someone help me.
Model: D802 32gb open
Click to expand...
Click to collapse
USE EFS Professional to rewrite the IMEI.
IMEI unknown or null ,Baseband unknown,IMeI SV unknown and sim doesn't work
I doesn't understand which model of lg g2 is mine ......at back part write lg d802 bt backside of motherboard write D801 main. Which one my phone model? After i flash my phone Europe Open D80230b.kdz .....It's show me IMEI unknown or null ,Baseband unknown,IMeI SV unknown and sim doesn't work How to i solve this please help me :crying:
Steamer86 said:
EFS. Hope you backed it up... if not, search forums, going to take a lot of manual work in diag mode along with a couple other apps via pc port to rewrite your IMEI.
Click to expand...
Click to collapse
bro could you please guide me on this. I too have screwed my imei/efs folder. I just got a new imported g2 phone from ebay, updated it to lollipop using lg pc suite and the phone lost its imei. please guide in detail how do i go ahead about it. I am badly stuck with a new bricked phone.
USE AT YOUR OWN RISK
This guide is intended for those individuals who can not use 3g or LTE but 2g works perfectly for them or they have lost their network and flashing different radios does not help
To check if you have this problem, go to settings>more>Mobile Network>Manual Search
You should have GSM / WDCMA/LTE or others depending on your network from all networks in your area.
What do you need :
*Drivers installed
*USB debugging (enable by going into settings>software information> tap on build number 10 times and developer options will appear in settings at the end. Enable USB debugging from there)
*ROOT
*QPST (QPST DOWNLOAD) LINK2
*EFS BACKUP TOOL (EFS BACKUP THREAD)
* Device specific backup of QCN (FIND IT YOURSELF AS IT WILL CHANGE YOUR IMEI TOO)
*DIAG MODE ENABLED
This is how to enable diag mode via platform tools using ADB on LG devices
Code:
adb shell
su
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
setprop sys.usb.config acm,diag,mtp,adb
It is preferred to clear these partitions by using these commands and restart your phone before flashing qcn files. I wiped wrong partitions (tz)using these commands and I got a HARD BRICK. YES A HARD BRICK so be very careful
Code:
dd if=/dev/zero of=/dev/block/mmcblk0p21
dd if=/dev/zero of=/dev/block/mmcblk0p22
dd if=/dev/zero of=/dev/block/mmcblk0p24
Restore by, where XX is the number and YY name of partition
Code:
dd if=/dev/block/[B]mmcblk0pXX/B] of=/sdcard/[B]YY[/B].epb
Example
Code:
dd if=/dev/block/mmcblk0p9 of=/sdcard/system.img
However, you can go ahead and clear these partitions only if you had a previous backup by blocks like EFS FILE EXPLORER. modemst1, modemst2, fsg, fsc,dbi, ddr, pad
Check which partition corresponds to which block by
Code:
ls -al /dev/block/platform/msm_sdcc.1/by-name
Once your device is connected, drivers and software installed,
You may need to first go to QPSTConfig which is located at QPST > Bin. There you will need to select port which will show your snapdragon model.
Go to QPST > Bin> QPSTServer.exe
1.A globe would appear in taskbar. Click on it and select software download.
2.Select port of your diagnostic mode in restore tab of software download
3. Once in software download, backup your current QCN (just as a backup to be safe)
4. Restore the QCN you found from google. Make sure it is device specific (use d850 QCN for d850 only)
5. Device would restart and automatically start to search 3g and LTE signals
Good luck
My original QCN was 31kb which clearly showed lost of data but the one that worked was about 500kb.
Lastly there are other methods to restore as well which I will look into so I can post in more details so your IMEI does not change.
Edit: You can do it by changing NV VALUE of 457 to your default value to keep your imei number as well
I will try to backup my radio partitions if someone needs help to fix their network issues or other possible solutions that could be found
HOW TO REVERT YOUR IMEI BACK TO ORIGINAL
1. Download EFS Professional. FROM HERE
2. Make sure you are rooted and busy box working.
3. Use commands as stated above to boot your phone in DIAG mode. This can be done anytime after connecting your phone to the PC.
4. Go to Qualcomm NV tools
5. Choose right port and connect.
6 Go to Secure Ops. tab and change imei from there. Make sure you have a full backup.
If this fails, you can use QXDM and go to NV tools and manually change your IMEI back to its real value. You will need to go to NV Values tab and then on side tab choose Security from All, and then change IMEI number to your real one. You can check details how to change values in QXDM in futher reading below. Samsung S5 thread explains it really well.
If you still are not sure, you can use QPST software. Go to NV manager and find your IMEI number after connecting the phone in diag mode. Usually it is 550 or 457 value.
Use Imei converter from attached files below and insert the converted values.
Good Luck
THREADS TO LOOK FOR FURTHER READ
Unlock Bands and how to boot into Diag mode All credits to @olokos for his guide
Unlock LTE bands and go into diag mode
All credits to @fffft for his guide
FOR BEST RESULTS WHICH I FOUND HAD MORE SUCCESS WITH
1. First understand the problem fully here
2. Flash a working qcn to your device
3. Wipe partitions as commands given above
4. restart
5. Flash a working qcn on it again. Preferably the same one
6. Check if you get signals now, if not then do a factory reset and see
Profit ? No
7. Install TOT stock 4.4.2 or Lollipop (I had more success with Lollipop)
8. Install a qcn from another device. Just to break all your signals (do at your own risk) I flashed a D855 qcn to my d850
9. Restart and wipe partitions
10. Reflashed working Qcn again
Profit ? No
It did not work till here so I moved to stock lollipop by flashing zip in TWRP. If you have TOT method, that is better.
So I went to flash Lollipop stock with modem of D850. (because it was zip and did not include modem. In TOT/ KDZ all partitions are flashed so you do not need to flash modem separately) So i wiped partitions again and then I flashed QCN using cracked version of Z3x Lg Tools twice. (same qcn but two times) and then restarted.
It restored everything back. Everything came to work fine
Z3X Cracked Download here
WHAT YOU CAN DO TO HELP OTHERS (needs root and busybox installed)
I suggest you make a backup of your EFS via TWRP & EFS TOOL before tinkering with hidden menu or anything at all. If you do these steps correctly, you do not risk of any damage to your device.
Download EFS Tool from here
http://forum.xda-developers.com/atta...6&d=1419867628
Main thread of it
http://forum.xda-developers.com/gala...546?styleid=18
1. go in backup tab
2. select all partitions
3. Select 3 partitions
backup modem, modemst1 and modemst2 and upload it for me so I can try to restore the settings to see if that works.
MAKE SURE YOU WRITE YOUR DEVICE MODEL when attaching those mentioned partitions AND DOUBLE CHECK IT AS FLASHING WRONG radios can permanently damage your device.
DEVICE I FIXED WAS D850 ATT Variant and had success with other variants as well
UPDATE
I have attached a D855 qcn with null imei. You will need to change your imei yourself which you can find by removing your battery. Make sure to make a backup before trying anything and I WILL BE NOT RESPONSIBLE
HISTORY --- JUST TO COMPARE IF YOU HAVE SIMILAR PROBLEM
hi there,
I am working to fix the problem many users have faced and therefore trying to find possible solutions. I need some partition images from you guys if you can provide me so I can try to fix the issues.
THE PROBLEM AND HOW IT STARTED :
I have got a D850 which I am using in Europe. The problem started when I inserted an LTE enabled sim and went to hidden menu to change my mode to LTE only, I was on Fulmics Rom 2.7 Lollipop at that time. Before that, ii network search, I could see all WCDMA, GSM and LTE bands used by different providers by manual search.
After changing it to LTE only, I could not see any signal bars and it started searching. As I was in an area where LTE signals were weak, so I thought maybe I need to change back to GSM/WCDMA/LTE from settings. Signals returned to normal but only to gsm. LTE and 3G were lost as searching for networks did not help at all.
I tinkered with hidden menu and selected GSM/WCDMA/LTE ( 3845#*850# ) from hidden menu
and
used this ( *#*#4636#*#* ) to change back to GSM/WCDMA/LTE from another hidden menu.
It didnot help.
I flashed different modems (one from kitkat and two versions from Lollipop) but that didnot help either.
I reverted back to KITKAT using TOT method and the WCDMA and LTE were lost forever when i tried to search manually. So I made an EFS backup and started tinkering with hidden method.
Actually I was not expecting that the values would be affected by using the hidden menu to fix my network to LTE only.
I then backup my EFS and tinkered with hidden menu and i was successful in bringing back LTE, however, I was stuck with no 3g.
Using build prop editor, I changed my operator from ATT to OPEN (as ATT does not show default selection menu for GSM/WCDMA/LTE in settings/ both hidden menus) which enabled the option by which I could changed my preferred network type.
In hidden menu, I just enabled VoLTE in LTE > Modem Settings > VoLTE On which brought back LTE.
Next I installed QPST & QXDM to check my NV values and IMEI.
All of those were perfectly fine. No problem at all.
Strangely all the NV values are right. I restored my EFS to old state where I didnot have LTE or 3g. The LTE was gone again.
I again enabled VoLTE from hidden menu and LTE came back.
See attached image for reference.
POSSIBLE SOLUTION :
I think the problem lies in ATT settings as it has preset operator settings which changes from GSM to WCDMA to LTE depending on its values.
Once I selected LTE only, I disabled the WCDMA and somehow broke the AT&T preset settings as you can not change preferred network from settings like D855 or other models. Somehow we need to re-enable these and one possible way would be to flash modemst 1 and modemst 2 from backup.
Please help me find the possible solution
PS : For all those who are wondering if i tried other sims and tried to use 4g/3g on another device. Yes i did and the problem is only in D850
I also made a proper working APN. Plus I check which network I am on by using *#*#4636#*#*
dd if=/home/med/Desktop/tz.img of=/dev/sdb6
Click to expand...
Click to collapse
ANY SUGGESTIONS ?[/U][/COLOR][/B] @hyelton
People who can not flash QCN need to break their Lg lock which is done by flashing someone else Twrp backup of same device on your phone. After this, you will be able to flash QCN without issues
Hnk1 said:
hi there,
I am working to fix the problem many users have faced and therefore trying to find possible solutions. I need some partition images from you guys if you can provide me so I can try to fix the issues.
THE PROBLEM AND HOW IT STARTED :
I have got a D850 which I am using in Europe. The problem started when I inserted an LTE enabled sim and went to hidden menu to change my mode to LTE only, I was on Fulmics Rom 2.7 Lollipop at that time. Before that, ii network search, I could see all WCDMA, GSM and LTE bands used by different providers by manual search.
After changing it to LTE only, I could not see any signal bars and it started searching. As I was in an area where LTE signals were weak, so I thought maybe I need to change back to GSM/WCDMA/LTE from settings. Signals returned to normal but only to gsm. LTE and 3G were lost as searching for networks did not help at all.
I tinkered with hidden menu and selected GSM/WCDMA/LTE ( 3845#*850# ) from hidden menu
and
used this ( *#*#4636#*#* ) to change back to GSM/WCDMA/LTE from another hidden menu.
It didnot help.
I flashed different modems (one from kitkat and two versions from Lollipop) but that didnot help either.
I reverted back to KITKAT using TOT method and the WCDMA and LTE were lost forever when i tried to search manually. So I made an EFS backup and started tinkering with hidden method.
Actually I was not expecting that the values would be affected by using the hidden menu to fix my network to LTE only.
I then backup my EFS and tinkered with hidden menu and i was successful in bringing back LTE, however, I was stuck with no 3g.
Using build prop editor, I changed my operator from ATT to OPEN (as ATT does not show default selection menu for GSM/WCDMA/LTE in settings/ both hidden menus) which enabled the option by which I could changed my preferred network type.
In hidden menu, I just enabled VoLTE in LTE > Modem Settings > VoLTE On which brought back LTE.
Next I installed QPST & QXDM to check my NV values and IMEI.
All of those were perfectly fine. No problem at all.
Strangely all the NV values are right. I restored my EFS to old state where I didnot have LTE or 3g. The LTE was gone again.
I again enabled VoLTE from hidden menu and LTE came back.
REQUEST , WHAT YOU CAN DO TO HELP (needs root and busybox installed)
I suggest you make a backup of your EFS via TWRP & EFS TOOL before tinkering with hidden menu or anything at all. If you do these steps correctly, you do not risk of any damage to your device.
Download EFS Tool from here
http://forum.xda-developers.com/atta...6&d=1419867628
Main thread of it
http://forum.xda-developers.com/gala...546?styleid=18
1. go in backup tab
2. select all partitions
3. Select 3 partitions
backup modem, modemst1 and modemst2 and upload it for me so I can try to restore the settings to see if that works.
See attached image for reference.
POSSIBLE SOLUTION :
I think the problem lies in ATT settings as it has preset operator settings which changes from GSM to WCDMA to LTE depending on its values.
Once I selected LTE only, I disabled the WCDMA and somehow broke the AT&T preset settings as you can not change preferred network from settings like D855 or other models. Somehow we need to re-enable these and one possible way would be to flash modemst 1 and modemst 2 from backup.
Please help me find the possible solution
PS : For all those who are wondering if i tried other sims and tried to use 4g/3g on another device. Yes i did and the problem is only in D850
I also made a proper working APN. Plus I check which network I am on by using *#*#4636#*#*
ANY SUGGESTIONS ?[/U][/COLOR][/B] @hyelton
Click to expand...
Click to collapse
Maybe the D850 does NOT have the bands that the carrier your trying to use it on? Flashing another modem wont enable bands the hardware does not have.
hyelton said:
Maybe the D850 does NOT have the bands that the carrier your trying to use it on? Flashing another modem wont enable bands the hardware does not have.
Click to expand...
Click to collapse
@hyelton
Update :
Please check the guide
Hnk1 said:
USE AT YOUR OWN RISK
This guide is intended for those individuals who can not use 3g or LTE but 2g works perfectly for them or they have lost their network and flashing different radios does not help
What do you need :
*Drivers installed
*USB debugging
*QPST (google it or google UNLOCK ALL BANDS QUALCOMM XDA and download from one of the forum there as it is banned)
*EFS BACKUP TOOL (available at xda or find link in history below)
* Device specific backup of QCN (FIND IT YOURSELF AS IT WILL CHANGE YOUR IMEI TOO)
*DIAG MODE ENABLED
This is how to enable diag mode via platform tools using ADB on LG devices
1) adb shell
2) su
3) echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
4) setprop sys.usb.config acm,diag,mtp,adb
Once your device is connected, proper drivers and software installed,
Go to QPST > Bin> QPSTServer.exe
1.A globe would appear in taskbar. Click on it and select software download.
2.Select port of your diagnostic mode in restore tab of software download
3. Once in software download, backup your current QCN (just as a backup to be safe)
4. Restore the QCN you found from google. Make sure it is device specific (use d850 QCN for d850 only)
5. Device would restart and automatically start to search 3g and LTE signals
Good luck
My original QCN was 31kb which clearly showed lost of data but the one that worked was about 500kb.
Lastly there are other methods to restore as well which I will look into so I can post in more details so your IMEI does not change
I will try to backup my radio partitions if someone needs help to fix their network issues or other possible solutions that could be found
REQUEST , WHAT YOU CAN DO TO HELP (needs root and busybox installed)
I suggest you make a backup of your EFS via TWRP & EFS TOOL before tinkering with hidden menu or anything at all. If you do these steps correctly, you do not risk of any damage to your device.
Download EFS Tool from here
http://forum.xda-developers.com/atta...6&d=1419867628
Main thread of it
http://forum.xda-developers.com/gala...546?styleid=18
1. go in backup tab
2. select all partitions
3. Select 3 partitions
backup modem, modemst1 and modemst2 and upload it for me so I can try to restore the settings to see if that works.
MAKE SURE YOU WRITE YOUR DEVICE MODEL when attaching those mentioned partitions AND DOUBLE CHECK IT AS FLASHING WRONG radios can permanently damage your device.
DEVICE I FIXED WAS D850 ATT Variant
HISTORY
hi there,
I am working to fix the problem many users have faced and therefore trying to find possible solutions. I need some partition images from you guys if you can provide me so I can try to fix the issues.
THE PROBLEM AND HOW IT STARTED :
I have got a D850 which I am using in Europe. The problem started when I inserted an LTE enabled sim and went to hidden menu to change my mode to LTE only, I was on Fulmics Rom 2.7 Lollipop at that time. Before that, ii network search, I could see all WCDMA, GSM and LTE bands used by different providers by manual search.
After changing it to LTE only, I could not see any signal bars and it started searching. As I was in an area where LTE signals were weak, so I thought maybe I need to change back to GSM/WCDMA/LTE from settings. Signals returned to normal but only to gsm. LTE and 3G were lost as searching for networks did not help at all.
I tinkered with hidden menu and selected GSM/WCDMA/LTE ( 3845#*850# ) from hidden menu
and
used this ( *#*#4636#*#* ) to change back to GSM/WCDMA/LTE from another hidden menu.
It didnot help.
I flashed different modems (one from kitkat and two versions from Lollipop) but that didnot help either.
I reverted back to KITKAT using TOT method and the WCDMA and LTE were lost forever when i tried to search manually. So I made an EFS backup and started tinkering with hidden method.
Actually I was not expecting that the values would be affected by using the hidden menu to fix my network to LTE only.
I then backup my EFS and tinkered with hidden menu and i was successful in bringing back LTE, however, I was stuck with no 3g.
Using build prop editor, I changed my operator from ATT to OPEN (as ATT does not show default selection menu for GSM/WCDMA/LTE in settings/ both hidden menus) which enabled the option by which I could changed my preferred network type.
In hidden menu, I just enabled VoLTE in LTE > Modem Settings > VoLTE On which brought back LTE.
Next I installed QPST & QXDM to check my NV values and IMEI.
All of those were perfectly fine. No problem at all.
Strangely all the NV values are right. I restored my EFS to old state where I didnot have LTE or 3g. The LTE was gone again.
I again enabled VoLTE from hidden menu and LTE came back.
See attached image for reference.
POSSIBLE SOLUTION :
I think the problem lies in ATT settings as it has preset operator settings which changes from GSM to WCDMA to LTE depending on its values.
Once I selected LTE only, I disabled the WCDMA and somehow broke the AT&T preset settings as you can not change preferred network from settings like D855 or other models. Somehow we need to re-enable these and one possible way would be to flash modemst 1 and modemst 2 from backup.
Please help me find the possible solution
PS : For all those who are wondering if i tried other sims and tried to use 4g/3g on another device. Yes i did and the problem is only in D850
I also made a proper working APN. Plus I check which network I am on by using *#*#4636#*#*
ANY SUGGESTIONS ?[/U][/COLOR][/B] @hyelton
Click to expand...
Click to collapse
from where did you got the qcn file
adil.ali.503 said:
from where did you got the qcn file
Click to expand...
Click to collapse
Google depending on your device model.
D850 qcn
D855 qcn download
Or something on the lines of above
I had two at&t g3. (Both lost their qcn) , one d855 and now I'm using third d850. ( I almost lost qcn on this one too)
I realise that qcn is easily lost on d850 model as even rooting via kingroot can simply damage qcn.
I had to sell all others. Previous models qcn didnt enable 4g for me , however, i flashed these to older device and 4g started to work. And i flashed older qcn to this device and 4g stopped working.
So make sure you find a qcn which enables 4g with 3g n 2g.
I would suggest go to a tech guy in your area who works with unlocking phones and they usually use some kind of boxes to flash qcn.
Another way could be you request a friend whose 4g is working to make a backup and share it with you.
Lastly, find it online and flash it yourself.
You can also request NV values which wouldnt change imei (as long as you change the NV 457 value to 0)
Inbox me for more help.
Good luck
My imei is already 0 and the model is d850 and body is of d855
The problem is that I can't use 3g on it
2g and 4g works fine
Sent from my LG-D850 using Tapatalk
adil.ali.503 said:
My imei is already 0 and the model is d850 and body is of d855
The problem is that I can't use 3g on it
2g and 4g works fine
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
I came here out of curiosity. Next time quote me if you expect a reply.
What you need to do is flash a QCN. I can try to repair your imei number and send you back.
What I will need is your imei number(remove your battery and see under it), model number and your qcn file. Make sure you inbox me these details and I will try to repair it for you.
Good Luck
Hnk1 said:
I came here out of curiosity. Next time quote me if you expect a reply.
What you need to do is flash a QCN. I can try to repair your imei number and send you back.
What I will need is your imei number(remove your battery and see under it), model number and your qcn file. Make sure you inbox me these details and I will try to repair it for you.
Good Luck
Click to expand...
Click to collapse
As I told you that the body of the cell is from d855 and the sticker on the back is also false one with the imei of a d855
Sent from my LG-D850 using Tapatalk
adil.ali.503 said:
As I told you that the body of the cell is from d855 and the sticker on the back is also false one with the imei of a d855
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
I can provide you with a qcn for device d850 but make sure you backup your own. Tell me if you would need it.
Also, the best thing would be that you send me your qcn and i try to repair it and send it to you back,
But i think the best thing could be to provide you with NV values. let me see if i can work something out.
QCN for d850
https://www.sendspace.com/file/ak2hkl
Hnk1 said:
I can provide you with a qcn for device d850 but make sure you backup your own. Tell me if you would need it.
Click to expand...
Click to collapse
Can you confirm that 2g,3g and 4g is working with that qcn
And a question for safety that what can happen at most if something goes wrong
Sent from my LG-D850 using Tapatalk
adil.ali.503 said:
Can you confirm that 2g,3g and 4g is working with that qcn
And a question for safety that what can happen at most if something goes wrong
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
MAKE A BACKUP OF YOUR QCN. either using QPST or using TWRP (TWRP from xda as it can also backup EFS)
I flashed many and i had none problems. As long as you do have a backup to go back to. There is no problem.
PS : Share your qcn and maybe I can try to repair it. I got NV values from my device.
If your friend has the same device. Grab qcn from him too and we can work something out as well
Hnk1 said:
MAKE A BACKUP OF YOUR QCN. either using QPST or using TWRP (TWRP from xda as it can also backup EFS)
I flashed many and i had none problems. As long as you do have a backup to go back to. There is no problem.
PS : Share your qcn and maybe I can try to repair it. I got NV values from my device.
If your friend has the same device. Grab qcn from him too and we can work something out as well
Click to expand...
Click to collapse
I already have a backup of efs I made by twrp
Is it all I've to do?
Sent from my LG-D850 using Tapatalk
adil.ali.503 said:
I already have a backup of efs I made by twrp
Is it all I've to do?
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
Although it is enough but i will go ahead and make a backup of qcn using qpst.
Hnk1 said:
Although it is enough but i will go ahead and make a backup of qcn using qpst.
Click to expand...
Click to collapse
I'm uploading my efs to Dropbox, I'll give you the link than
Can I just restore the efs files if you can provide me coz I don't want to mess with qpst
It's a bit difficult to me as I'm just a noob
Sent from my LG-D850 using Tapatalk
Hnk1 said:
Google depending on your device model.
D850 qcn
D855 qcn download
Or something on the lines of above
I had two at&t g3. (Both lost their qcn) , one d855 and now I'm using third d850. ( I almost lost qcn on this one too)
I realise that qcn is easily lost on d850 model as even rooting via kingroot can simply damage qcn.
I had to sell all others. Previous models qcn didnt enable 4g for me , however, i flashed these to older device and 4g started to work. And i flashed older qcn to this device and 4g stopped working.
So make sure you find a qcn which enables 4g with 3g n 2g.
I would suggest go to a tech guy in your area who works with unlocking phones and they usually use some kind of boxes to flash qcn.
Another way could be you request a friend whose 4g is working to make a backup and share it with you.
Lastly, find it online and flash it yourself.
You can also request NV values which wouldnt change imei
Inbox me for more help.
PS : i have come up with severe viral conjuctivitis so i might not be able to help you till it clears up.
Good luck
Click to expand...
Click to collapse
Hi I have a D855 LG G3 and I have the same exact problem, my 2G works perfectly fine but I am no longer able to access LTE or 3g (signal shuts down when I switch to 3g or LTE mode, Service is disabled).
My IMEI is fine and is not lost... I can see it in About screen, I have tried installing different lollipop modems and even downgraded to Lollipop and Kitkat rom and even tried Cyanogenmod 12.1, I never had the signal back on.
Can you please share the LG D855 QCN? I have no idea where to get it, googling has not gotten me anywhere, I saw a SINGLE site where I could download it but it had a password.
adil.ali.503 said:
I'm uploading my efs to Dropbox, I'll give you the link than
Can I just restore the efs files if you can provide me coz I don't want to mess with qpst
It's a bit difficult to me as I'm just a noob
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
Well, i will tell you step by step how to make a backup of QCN and how to flash QCN. It will be fine.
How did you manage to back it up ?
Mate you sent me EFS which means I need to use it on my device and then fix it and then send you.
Can you manage a QCN ?
It is very easy. Let me get back to you by night but I WILL PREFER QCN
pjl3dm said:
Hi I have a D855 LG G3 and I have the same exact problem, my 2G works perfectly fine but I am no longer able to access LTE or 3g (signal shuts down when I switch to 3g or LTE mode, Service is disabled).
My IMEI is fine and is not lost... I can see it in About screen, I have tried installing different lollipop modems and even downgraded to Lollipop and Kitkat rom and even tried Cyanogenmod 12.1, I never had the signal back on.
Can you please share the LG D855 QCN? I have no idea where to get it, googling has not gotten me anywhere, I saw a SINGLE site where I could download it but it had a password.
Click to expand...
Click to collapse
Check your inbox. Tell me the result. And always remember : BACK UP BACK UP BACK UP FIRST
pjl3dm said:
Hi I have a D855 LG G3 and I have the same exact problem, my 2G works perfectly fine but I am no longer able to access LTE or 3g (signal shuts down when I switch to 3g or LTE mode, Service is disabled).
My IMEI is fine and is not lost... I can see it in About screen, I have tried installing different lollipop modems and even downgraded to Lollipop and Kitkat rom and even tried Cyanogenmod 12.1, I never had the signal back on.
Can you please share the LG D855 QCN? I have no idea where to get it, googling has not gotten me anywhere, I saw a SINGLE site where I could download it but it had a password.
Click to expand...
Click to collapse
Did you checked your hangouts
Sent from my LG-D850 using Tapatalk
adil.ali.503 said:
Did you checked your hangouts
Sent from my LG-D850 using Tapatalk
Click to expand...
Click to collapse
here you go.
Just run restore via twrp and your imei should be fixed. Good luck
I will appreciate if you tell me if it worked for you!
Hnk1 said:
here you go.
Just run restore via twrp and your imei should be fixed. Good luck
I will appreciate if you tell me if it worked for you!
Click to expand...
Click to collapse
Sorry to say it doesn't work
Imei is still 0 and I can't get any 3g signals
I think its the problem with the frequency band
Thanks for your help ?
Sent from my LG-D850 using Tapatalk
I'm still getting 4G LTE signals but it seems that I cannot get any data at all (any website can't load). Will this help solve it?
I was having the dreaded "Sim card not detected" message and decided to try replacing the mainboard of my Koodo/Telus S4 SGH-i337m with another from the exact same model but different company.
I rooted the phone (etc) and used the tool at http://forum.xda-developers.com/gal...ool-antaresone-s-imei-backup-restore-t2975136 to do a complete backup of the EFS and stuff
I was able to swap out the boards with no trouble and confirmed the newly repaired phone had an IMEI before doing a restore using the above tool as well, but after doing so, the IMEI says Unknown.
I put the phone into DM mode and enabled cp logging in recovery so the phone could be recognized by Windows (otherwise it was saying USB Device Not Recognized)
I tried Octoplus and it can get the software and firmware info from the phone, but does nothing else. NV Items reader writer gives an "Unknown Command" error for even just reading the full phone.
Not sure what I need to do to fix this. Thinking about contacting an unlocking guy here in Canada who says he can repair the IMEI remotely, but I don't want to do that if it's something simple I'm overlooking. Unfortunately most of the documents talking about IMEI repair refer to options that don't exist in my service menu (for example #6 Common and turning off FTM mode). Would appreciate any help.
The backup method is for the i9505 and I understand that, hardware-wise, the i337m has the same hardware but the major difference is support for LTE frequencies in Canada.
You tried to restore the imei from the original motherboard to the replacement motherboard? Do you have a back up of the replacement motherboard's imei information?
With the s4, I don't think all of the imei information is in the efs folder. Nvdata may be written in a hidden partition.
Yup I took a backup of both before doing anything
The tool I linked to says it supports the i337m and it detected it and did not complain at all.
audit13 said:
The backup method is for the i9505 and I understand that, hardware-wise, the i337m has the same hardware but the major difference is support for LTE frequencies in Canada.
You tried to restore the imei from the original motherboard to the replacement motherboard? Do you have a back up of the replacement motherboard's imei information?
With the s4, I don't think all of the imei information is in the efs folder. Nvdata may be written in a hidden partition.
Click to expand...
Click to collapse
The tool backed up several partitions it seems, not just the efs.
Just an FYI. Both motherboards are for Canadian models. My original was with Koodo and the new one is from Bell. Both are identical. It shouldn't have a problem with that.
You tried to restore your old imei to the replacement board? Any particular reason this was necessary? Both motherboards were running the same ROM although I'm not sure this makes a difference.
I wanted to keep it as close to the original as possible (guess I'm a bit OCD like that lol) and I'm pretty sure the seller I bought it from on eBay set the imei on it to a fake number, as I checked it online and nobody had any information on it (whereas my original Imei was recognized as coming from an s4).
Did you try flashing a stock rom on the replacement motherboard? If that doesn't restore the imei and you don't have the replacement's original imei, you may be out of luck.
You confirmed that the replacement is an i337m in download mode?
I am trying a stock Bell firmware using odin now and will then restore the imei backup I took of the new motherboard to see what happens.
Trying to restore the imei backup from the Koodo phone may make it worse.
After flashing a stock rom, check to see if wifi and Bluetooth works before trying to restore the imei.
audit13 said:
Trying to restore the imei backup from the Koodo phone may make it worse.
After flashing a stock rom, check to see if wifi and Bluetooth works before trying to restore the imei.
Click to expand...
Click to collapse
Still working on it, but previous attempts have had absolutely no other issues. Wifi, camera, et al have worked fine.
Okay so I flashed back the Bell stock firmware and my backup of the new motherboard, and the IMEI is back, but I am almost 100% sure it's a fake one. None of the sim unlock methods work and online tools cannot identify it. It's not the old 0049 or any other known fake/invalid one, which is quite weird.
Which method are you using to sim unlock?
I just purchased an unlock code for my original imei and am stuck at this point unless I can figure out why it doesn't work on the new motherboard.
Unlock codes are tied to the imei. Since you can't get your imei into the replacement board, you can't use the unlock code.
Also, some carriers can detect an altered imei and will not activate the phone on their network. Not sure if this is always the case.
We dont support nor allow discussion of imei changing, thread closed.
Hey guys, I purchased a LeEco Le Pro3 X727 for around $190. I plan on sending this phone out to Asia, so LTE band 41 and some others present in X720 is kinda important. I've read multiple threads, but there isn't really a concrete how-to on modems and LTE bands. I saw that the hardware is the same and something about the old way of unlocking the bootloader by flashing stock Chinese firmware and then flashing US firmware back to get back LTE bands for USA. Now my question is how can I make it so that in the end I have a Le Pro3 X727 with Chinese bands working. I saw something about losing network connectivity. I also want to install a custom ROM but I already know how to do that. Just need help with the baseband and getting the Chinese bands working.
To unlock bootloader you can simply do that in developper option mode after activating the usb debugging of your phone.
To unlock bands just follow saraprobe tutorial from here : https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979 or follow what im gonna say next.
Please dont forget to back up your phone especially the efs partition with TWRP if you planning to do some changes, it is really important in case u do something wrong, i'm not responsible if you do something wrong.
This is only gonna unlock lte bands of the phone.
it requires your phone to be rooted.
it require adb drivers(before doing the adb shell command in cmd try the command adb devices, if the phone is not showing up there when you doing it
just do *#*#76937#*#* on your phone and enable at port, try again "adb devices" command and your device should be here ).
the other methods to unlock band is using QPST/QXDM, you will find the software in the description of the video, and you can do what is in the following video to do it :
https://www.youtube.com/watch?v=GEO1UXuFLbI
Maybe it's not in english but if you follow what he is doing it's easy and, just when he is changing the nv item : 06828 , the number u need to write is "2062255987167" and press write.
To check if it's working download network signal guru in app store, and lock the band you want, like in the following vid :
https://www.youtube.com/watch?v=0lH4GtNfFmo
Good luck .
If it's not working then i might need your xqcn file to do a comparaison with my x720 file, and work with that.
DO NOT FORGET THAT A XQCN FILE CONTAIN YOUR IMEI AND SHOULDN't be shared on the internet,you have to send it to me through mp if you are willing to with or without IMEI
you can do that by backing up the xqcn like this, dont forget to mention what bands your phone is capable of as well, this might help me to unlock b28 on the phone :
https://www.youtube.com/watch?v=7i99xSIMcSI
Well, I enabled the bands I need, just need to test now if it actually works. I'll be finding out if it works in a week when I fly to Asia. Also, anyway to safely update the firmware to the latest with the latest radio and everything. I think some people said the firmware is interchangeable. I have LineageOS loaded onto it. Currently on 5.8.0.019s NA firmware. I see 5.9.0.026s CN is latest. Any tips?
zaiem93 said:
To unlock bootloader you can simply do that in developper option mode after activating the usb debugging of your phone.
To unlock bands just follow saraprobe tutorial from here : https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979 or follow what im gonna say next.
Please dont forget to back up your phone especially the efs partition with TWRP if you planning to do some changes, it is really important in case u do something wrong, i'm not responsible if you do something wrong.
This is only gonna unlock lte bands of the phone.
it requires your phone to be rooted.
it require adb drivers(before doing the adb shell command in cmd try the command adb devices, if the phone is not showing up there when you doing it
just do *#*#76937#*#* on your phone and enable at port, try again "adb devices" command and your device should be here ).
the other methods to unlock band is using QPST/QXDM, you will find the software in the description of the video, and you can do what is in the following video to do it :
https://www.youtube.com/watch?v=GEO1UXuFLbI
Maybe it's not in english but if you follow what he is doing it's easy and, just when he is changing the nv item : 06828 , the number u need to write is "2062255987167" and press write.
To check if it's working download network signal guru in app store, and lock the band you want, like in the following vid :
https://www.youtube.com/watch?v=0lH4GtNfFmo
Good luck .
If it's not working then i might need your xqcn file to do a comparaison with my x720 file, and work with that.
DO NOT FORGET THAT A XQCN FILE CONTAIN YOUR IMEI AND SHOULDN't be shared on the internet,you have to send it to me through mp if you are willing to with or without IMEI
you can do that by backing up the xqcn like this, dont forget to mention what bands your phone is capable of as well, this might help me to unlock b28 on the phone :
https://www.youtube.com/watch?v=7i99xSIMcSI
Click to expand...
Click to collapse
I got a x727, it´s on omnirom now, and I played around with band 20.
Following https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979 gave me Band 20 in Network signal guru, but doesn´t work.
Before I try QPST/QXDM, do you have an idea, which would be the correct number for me, is it the same, you mentioned above?
May be deleted, sorry!
HuaSamSony said:
I got a x727, it´s on omnirom now, and I played around with band 20.
Following https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979 gave me Band 20 in Network signal guru, but doesn´t work.
Before I try QPST/QXDM, do you have an idea, which would be the correct number for me, is it the same, you mentioned above?
Click to expand...
Click to collapse
I have the same issue as the OP. Flashed JUI which completely borked my LTE connectivity on LEX727. I tried the QPST fix, and they do show up in Network Signal Guru, but do not actively connect to those frequencies. I'm afraid we're SOL.
zaiem93 said:
To unlock bootloader you can simply do that in developper option mode after activating the usb debugging of your phone.
To unlock bands just follow saraprobe tutorial from here : https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979 or follow what im gonna say next.
Please dont forget to back up your phone especially the efs partition with TWRP if you planning to do some changes, it is really important in case u do something wrong, i'm not responsible if you do something wrong.
This is only gonna unlock lte bands of the phone.
it requires your phone to be rooted.
it require adb drivers(before doing the adb shell command in cmd try the command adb devices, if the phone is not showing up there when you doing it
just do *#*#76937#*#* on your phone and enable at port, try again "adb devices" command and your device should be here ).
the other methods to unlock band is using QPST/QXDM, you will find the software in the description of the video, and you can do what is in the following video to do it :
https://www.youtube.com/watch?v=GEO1UXuFLbI
Maybe it's not in english but if you follow what he is doing it's easy and, just when he is changing the nv item : 06828 , the number u need to write is "2062255987167" and press write.
To check if it's working download network signal guru in app store, and lock the band you want, like in the following vid :
https://www.youtube.com/watch?v=0lH4GtNfFmo
Good luck .
If it's not working then i might need your xqcn file to do a comparaison with my x720 file, and work with that.
DO NOT FORGET THAT A XQCN FILE CONTAIN YOUR IMEI AND SHOULDN't be shared on the internet,you have to send it to me through mp if you are willing to with or without IMEI
you can do that by backing up the xqcn like this, dont forget to mention what bands your phone is capable of as well, this might help me to unlock b28 on the phone :
https://www.youtube.com/watch?v=7i99xSIMcSI
Click to expand...
Click to collapse
Just a question.
I tried everything as described above on a LEX727 (5.8.019s (4GB 64 GB)). First: https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979, checking Band 20 additionally.
Same Problem as described there: LTE BC Config DIV #6829" didn't work. In Network guru Band 20 is listed, but no signal, Band 3 and 7 is working (Germany).
I learned, that my custom rom (Omnirom) didn´t work with diagnostic mode (driver not recognized), after restoring 5.8.019s I did your way above. In DIV #6828 there was already written, what I found by "Band calculator for activating Band 20 additionally. So I changed this in Config DIV #6829.
But nothing changed.
So, I did a backup of my QCN File before changing, I can do another backup now.
Maybe you can have a look to this files?
HuaSamSony said:
Just a question.
I tried everything as described above on a LEX727 (5.8.019s (4GB 64 GB)). First: https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979, checking Band 20 additionally.
Same Problem as described there: LTE BC Config DIV #6829" didn't work. In Network guru Band 20 is listed, but no signal, Band 3 and 7 is working (Germany).
I learned, that my custom rom (Omnirom) didn´t work with diagnostic mode (driver not recognized), after restoring 5.8.019s I did your way above. In DIV #6828 there was already written, what I found by "Band calculator for activating Band 20 additionally. So I changed this in Config DIV #6829.
But nothing changed.
So, I did a backup of my QCN File before changing, I can do another backup now.
Maybe you can have a look to this files?
Click to expand...
Click to collapse
Yes we can try, send me your qcn file through pm i will check with my x720 the value of the calibration files(rx,tx,gain freq,Pa,LNA) for b20 yours are probably missing but im not sure. i think they unlocked the bands in one plus like this.