[GUIDE] How to fix "unknown baseband" / "stuck on airplane mode" problem
Today my friend who has a i9100 as I presented the unit with the following problem: not connected in any way in the mobile carrier, airplane mode was stucked.
Well, looking on the internet and especially this forum, I found several solutions to make the flash the original rom to accept that his incredible Samsung Galaxy SII had become an amazing Samsung Play SII. As I'm Brazilian and never give up, here's what worked for me.
---------
Most importantly, use at your own risk. If you are unsure of the steps below, do not do or have someone who has more experience. The procedures worked for me, but does not mean it will work for you.
Special care was always doing this kind of operation in any type of phone: use good quality cables, make sure that there is no bad contacts and preferably make the flash operations with a notebook with the battery at 100% load and phone with 100% load. After all, nobody wants the operation is interrupted and you get a plastic brick.
----
Here are the steps:
1) Download this application: http://forum.xda-developers.com/showthread.php?t=1308546. EFS Pro serves to backup / restore partition EFS.
2) To use EFS Pro, your phone must be enabled with the root. To do this, follow:
2.a) Paving the way for SuperOneClick: http://forum.xda-developers.com/showthread.php?t=1056334
2.b) Using SuperOneClick to "open legs": http://forum.xda-developers.com/showthread.php?t=803682
2.c) Now, some screwdrivers and screws inside your device: https://market.android.com/details?...t=W251bGwsMSwxLDEsInN0ZXJpY3Nvbi5idXN5Ym94Il0.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.
Hi, ljlima,
thanks for your report, I'am Brazilian too, but I'm almost giving up
Completely disappointed with this ****ty problem... Made a hard reset typing a code in phone keypad (since I could not access ID samsung in factory reset) and nothing...
Very afraid of following your instructions since I'am totally newbie and there is no replies confirming your method.
Is there a chance of solving this by upgrading android version (although KIES is crappy as hell) or other non invasive and easier method ?
thank you!
Samsung Galaxy SII
2.3.3
kernel version
2.6.35.7-I9100XWKE2-CL187606 [email protected] #2
GINGERBREAD.XWKE2
ljlima said:
4) Give the problem phone a boot and see the problem disappear.
Click to expand...
Click to collapse
But the IMEI will be 0049...
THANK YOU THANK YOU THANK YOU!
SAVED MY GALAXY SII from Bell
Also, sometimes, if your /EFS is not totally corrupted, you can just reflash your modem. I had issues with this on CM7 nightlies, and my problem was always solved with a simple reflash. Its easier than restoring your whole /EFS backup, and a lot quicker. But, mind this is only if your /EFS isn't done for.
Thnx a lot. for refreshind download links.
any one confirm the success of this method?
Confirmed Solution
This worked for me!!! You can find this software on net. Search with GSII_Repair. This works for sure!!! This can be downloaded from Google Play Market also. Available for free!!!
ghassir said:
Thnx a lot. for refreshind download links.
any one confirm the success of this method?
Click to expand...
Click to collapse
"lambergino" user tryed on january and works. And I wrote this post after resolve my friend problem.
"Unknown" baseband on a non-rooted SGS2!
Help!
My SGS2 suddenly would not recognize any SIM after a failed attempt at backing up my files using the sh!tty Kies software.
All I did was make a backup using Kies and somehow it got stuck "Preparing". I left it overnight and in the morning, when I checked, it still didn't go through the backup process - just kept saying preparing. Anyway, I decided to cancel it as I needed to use my phone already. I clicked on the cancel button and guess what? It also got stuck in cancelling! I left it and went to shower and when I got back after about 15 minutes (probably longer), it still didn't cancel. Frustrated, I plugged the USB cable out. Later that day, I noticed that I didn't receive any SMS/call. Then, I noticed that the notification bar displayed the "no signal" icon. I rebooted my phone, hoping the signal would return. But, I still got no signal after it switched on.
I did a factory reset, hoping it will put everything back to normal. I used the volume+power key combination as the factory reset option under Settings, somehow, would not work. Anyway, after doing the factory reset, it still wouldn't connect to the network.
I then noticed that the About screen displayed an "Unknown" baseband version.
From what I read from this thread and several other forums, this could be due to a corrupted /efs partition, which could have resulted from improperly rooting/flashing the device. However, I never rooted my phone in the first place!!!
And I heard the ICS update is rolling out now but I can't update because, somehow, Kies won't connect to my phone anymore!!!
My phone now is practically a very expensive music player. THIS IS SO FRUSTRATING!!!
Please help, anyone!
Hi there
I have a I9100G with missing IMEI and Baseband. Can I use your I9100 EFS file on my I9100G ?
Or is there someone who can provide EFS files for I9100G?
Thanks in advance!!!
Regards
Please try one these solutions
ljlima said:
Today my friend who has a i9100 as I presented the unit with the following problem: not connected in any way in the mobile carrier, airplane mode was stucked.
Well, looking on the internet and especially this forum, I found several solutions to make the flash the original rom to accept that his incredible Samsung Galaxy SII had become an amazing Samsung Play SII. As I'm Brazilian and never give up, here's what worked for me.
---------
Most importantly, use at your own risk. If you are unsure of the steps below, do not do or have someone who has more experience. The procedures worked for me, but does not mean it will work for you.
Special care was always doing this kind of operation in any type of phone: use good quality cables, make sure that there is no bad contacts and preferably make the flash operations with a notebook with the battery at 100% load and phone with 100% load. After all, nobody wants the operation is interrupted and you get a plastic brick.
----
Here are the steps:
1) Download this application: http://forum.xda-developers.com/showthread.php?t=1308546. EFS Pro serves to backup / restore partition EFS.
2) To use EFS Pro, your phone must be enabled with the root. To do this, follow:
2.a) Paving the way for SuperOneClick: http://forum.xda-developers.com/showthread.php?t=1056334
2.b) Using SuperOneClick to "open legs": http://forum.xda-developers.com/showthread.php?t=803682
2.c) Now, some screwdrivers and screws inside your device: https://market.android.com/details?...t=W251bGwsMSwxLDEsInN0ZXJpY3Nvbi5idXN5Ym94Il0.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.
Click to expand...
Click to collapse
Braidonh said:
Also, sometimes, if your /EFS is not totally corrupted, you can just reflash your modem. I had issues with this on CM7 nightlies, and my problem was always solved with a simple reflash. Its easier than restoring your whole /EFS backup, and a lot quicker. But, mind this is only if your /EFS isn't done for.
Click to expand...
Click to collapse
scorypto said:
This worked for me!!! You can find this software on net. Search with GSII_Repair. This works for sure!!! This can be downloaded from Google Play Market also. Available for free!!!
Click to expand...
Click to collapse
You need to try one of these.
None of this works for me, I tried everything
Any other advice
Regards
Service centre or JTag repair .
jje
gordskin
ljlima said:
Today my friend who has a i9100 as I presented the unit with the following problem: not connected in any way in the mobile carrier, airplane mode was stucked.
Well, looking on the internet and especially this forum, I found several solutions to make the flash the original rom to accept that his incredible Samsung Galaxy SII had become an amazing Samsung Play SII. As I'm Brazilian and never give up, here's what worked for me.
---------
Most importantly, use at your own risk. If you are unsure of the steps below, do not do or have someone who has more experience. The procedures worked for me, but does not mean it will work for you.
Special care was always doing this kind of operation in any type of phone: use good quality cables, make sure that there is no bad contacts and preferably make the flash operations with a notebook with the battery at 100% load and phone with 100% load. After all, nobody wants the operation is interrupted and you get a plastic brick.
----
Here are the steps:
1) Download this application: http://forum.xda-developers.com/showthread.php?t=1308546. EFS Pro serves to backup / restore partition EFS.
2) To use EFS Pro, your phone must be enabled with the root. To do this, follow:
2.a) Paving the way for SuperOneClick: http://forum.xda-developers.com/showthread.php?t=1056334
2.b) Using SuperOneClick to "open legs": http://forum.xda-developers.com/showthread.php?t=803682
2.c) Now, some screwdrivers and screws inside your device: https://market.android.com/details?...t=W251bGwsMSwxLDEsInN0ZXJpY3Nvbi5idXN5Ym94Il0.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.
Click to expand...
Click to collapse
YOu are lifesaver, it actually worked after I have tried 100's of difernet thinks. Thanks:good:
need your help
gordskin said:
YOu are lifesaver, it actually worked after I have tried 100's of difernet thinks. Thanks:good:
Click to expand...
Click to collapse
please can you share wich way helped you !!!
Your Fix
ljlima said:
Today my friend who has a i9100 as I presented the unit with the following problem: not connected in any way in the mobile carrier, airplane mode was stucked.
Well, looking on the internet and especially this forum, I found several solutions to make the flash the original rom to accept that his incredible Samsung Galaxy SII had become an amazing Samsung Play SII. As I'm Brazilian and never give up, here's what worked for me.
---------
Most importantly, use at your own risk. If you are unsure of the steps below, do not do or have someone who has more experience. The procedures worked for me, but does not mean it will work for you.
Special care was always doing this kind of operation in any type of phone: use good quality cables, make sure that there is no bad contacts and preferably make the flash operations with a notebook with the battery at 100% load and phone with 100% load. After all, nobody wants the operation is interrupted and you get a plastic brick.
----
Here are the steps:
1) Download this application: http://forum.xda-developers.com/showthread.php?t=1308546. EFS Pro serves to backup / restore partition EFS.
2) To use EFS Pro, your phone must be enabled with the root. To do this, follow:
2.a) Paving the way for SuperOneClick: http://forum.xda-developers.com/showthread.php?t=1056334
2.b) Using SuperOneClick to "open legs": http://forum.xda-developers.com/showthread.php?t=803682
2.c) Now, some screwdrivers and screws inside your device: https://market.android.com/details?...t=W251bGwsMSwxLDEsInN0ZXJpY3Nvbi5idXN5Ym94Il0.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.
Click to expand...
Click to collapse
Will this work in Germany? I have the same problem. Can I use your baseband since I dont have a donor Handy SII? I have been racking my brain for 3 days trying to correct this.
ScottsDesk said:
Will this work in Germany? I have the same problem. Can I use your baseband since I dont have a donor Handy SII? I have been racking my brain for 3 days trying to correct this.
Click to expand...
Click to collapse
As I said, try it on own risk. But I think that will work because other international users tried and worked, as you can see in this thread.
Good luck.
Donor EFS backup file needed..
Hi, I need a donor file compatible with EFSPro the links given in OP post have a .tar file whereas the latest version of EFS Pro works with a tar.gz with .img file in it.
I have also tried to replace the nv_data.bin file with the .bak version but the folder is Read only and I cannot over write the original file.
Any help is appreciated.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.[/QUOTE]
ljlima said:
Today my friend who has a i9100 as I presented the unit with the following problem: not connected in any way in the mobile carrier, airplane mode was stucked.
Well, looking on the internet and especially this forum, I found several solutions to make the flash the original rom to accept that his incredible Samsung Galaxy SII had become an amazing Samsung Play SII. As I'm Brazilian and never give up, here's what worked for me.
---------
Most importantly, use at your own risk. If you are unsure of the steps below, do not do or have someone who has more experience. The procedures worked for me, but does not mean it will work for you.
Special care was always doing this kind of operation in any type of phone: use good quality cables, make sure that there is no bad contacts and preferably make the flash operations with a notebook with the battery at 100% load and phone with 100% load. After all, nobody wants the operation is interrupted and you get a plastic brick.
----
Here are the steps:
1) Download this application: http://forum.xda-developers.com/showthread.php?t=1308546. EFS Pro serves to backup / restore partition EFS.
2) To use EFS Pro, your phone must be enabled with the root. To do this, follow:
2.a) Paving the way for SuperOneClick: http://forum.xda-developers.com/showthread.php?t=1056334
2.b) Using SuperOneClick to "open legs": http://forum.xda-developers.com/showthread.php?t=803682
2.c) Now, some screwdrivers and screws inside your device: https://market.android.com/details?...t=W251bGwsMSwxLDEsInN0ZXJpY3Nvbi5idXN5Ym94Il0.
3) Now the easy part, get another Galaxy S2 to be the "donor" baseband. You do not? Download mine by this link:
https://hotfile.com/dl/149885347/a004c04/EFS_20111227_235358.tar.html or https://rapidshare.com/files/2401446638/EFS_20111227_235358.tar. If you use my baseband, skip to step 3.b.
3.a) Pick up the phone "donor", run the EFS Pro and select the backup option. To accelerate the process, ask to put the backup on the sdcard. There, he set up and placed in the / sdcard / EFSProBackup.
3.b) Copy / Create the folder / sdcard / EFSProBackup problem to the phone with the same path.
3.c) EFS Pro back in, ask to restore the backup from the device (will find the file you copied) and ready.
4) Give the problem phone a boot and see the problem disappear.
----
This is my first post and hopefully it will be useful. Pay me a beer if you like it.
Click to expand...
Click to collapse
dud id used your EFS...i did not work for me...i then factory reset my phone.,..now there is an input password when opening the phone! now i totally cant acces my phone because of this password...pin code...
SIM Pin or Network Code?
Either way your IMEI must be back.
Sent from the little guy
Hi,
I have made a mistake trying to change a rom for my device (Lenovo s820).
I thought my phone was gone, but step by step I was able to bring it back to life.
Now I have a working rom and I set back the IMEI's, but I still have "no service".
After reading a lot, I understand that I need to recover my "NVRAM" and to do so, I need for somebody to send my a file called "NVRAM.IMG" which applies to my device.
I can't find this file anywhere on the net.
Can somebody please send me?
Thanks in advance
aburdo said:
Hi,
I have made a mistake trying to change a rom for my device (Lenovo s820).
I thought my phone was gone, but step by step I was able to bring it back to life.
Now I have a working rom and I set back the IMEI's, but I still have "no service".
After reading a lot, I understand that I need to recover my "NVRAM" and to do so, I need for somebody to send my a file called "NVRAM.IMG" which applies to my device.
I can't find this file anywhere on the net.
Can somebody please send me?
Thanks in advance
Click to expand...
Click to collapse
Hi,
Nobody can help?
Please, I can't use my phone.
how to did you bring your lenovo phone back to life cause mine get stuck in boot logo
Invalid Imei
aburdo said:
Hi,
I have made a mistake trying to change a rom for my device (Lenovo s820).
I thought my phone was gone, but step by step I was able to bring it back to life.
Now I have a working rom and I set back the IMEI's, but I still have "no service".
After reading a lot, I understand that I need to recover my "NVRAM" and to do so, I need for somebody to send my a file called "NVRAM.IMG" which applies to my device.
I can't find this file anywhere on the net.
Can somebody please send me?
Thanks in advance
Click to expand...
Click to collapse
you can restore with this tutorial, see the link in indonesian language search on google @ key word
OFFICIAL LOUNGE LENOVO S820 kaskus
i cant share the link do to the policy "To prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for understanding"
neocortex95 said:
you can restore with this tutorial, see the link in indonesian language search on google @ key word
OFFICIAL LOUNGE LENOVO S820 kaskus
i cant share the link do to the policy "To prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for understanding"
Click to expand...
Click to collapse
it is possible to restore imei BUT in there is not only code but some other settings that will be not restored or taken by default values.
in my case i restored it but i cannot connect to GSM operator ((
please share the nvram with me for s820 thx in advance!
it's easy how to do it (contact me if any issues)
thx a lot
Solution of NVRAM.img and no-services Lenovo S820
aburdo said:
Hi,
I have made a mistake trying to change a rom for my device (Lenovo s820).
I thought my phone was gone, but step by step I was able to bring it back to life.
Now I have a working rom and I set back the IMEI's, but I still have "no service".
After reading a lot, I understand that I need to recover my "NVRAM" and to do so, I need for somebody to send my a file called "NVRAM.IMG" which applies to my device.
I can't find this file anywhere on the net.
Can somebody please send me?
Thanks in advance
Click to expand...
Click to collapse
This is the solution....thanks
alaa.hamdy said:
This is the solution....thanks
Click to expand...
Click to collapse
How do you apply it, I have the same problem.
The bat file is not working, it says cannot find adb.exe.
I put the adb.exe at system32 folder along with the dll files and still bat is not working
aburdo said:
Hi,
I have made a mistake trying to change a rom for my device (Lenovo s820).
I thought my phone was gone, but step by step I was able to bring it back to life.
Now I have a working rom and I set back the IMEI's, but I still have "no service".
After reading a lot, I understand that I need to recover my "NVRAM" and to do so, I need for somebody to send my a file called "NVRAM.IMG" which applies to my device.
I can't find this file anywhere on the net.
Can somebody please send me?
Thanks in advance
Click to expand...
Click to collapse
hi dear
lenovo s820 imei
Your phone will fix the problem?
I also have this problem.
[Solved] Solution For Recover your IMEI For Lenovo S820
1) You must Root your Smartphone by Framaroot 1.8.1 (Apk for simple usein smartphone)
2) Install Root Explorer
3) Open Root Explorer and go to dev Folder and check pttycmd1 file
4) If "Pttycmd1" not exist ,copy that from "dev/radio" Folder and paste to "dev" Folder
5) Install Terminal Emulator (like cmd in windows but in Linux andorid)
6) open Terminal Emulator and enter "su" then enter (For super user Authentication)
7) in next line enter this codes
echo 'AT +EGMR=1,7,"IMEI_1"'> /dev/pttycmd1
echo 'AT +EGMR=1,10,"IMEI_2"'> /dev/pttycmd1
IMEI_1 , IMEI_2 : you must enter 15 digits for each (For Valid Number use your old IMEI Code and if u want check that in
"imei-number.com/imei-validation-check"
8) After Each line only Press Enter and nothing more
9) You must Restart Your Phone (not fast booting)
10) After Restart Press *#06# and enjoy your Entered IMEI
11) You can Backup your IMEI ID By Software like MobileUncle (Suitable For Chines Mobile like Lenovo)
12) Good Luck
Afshin.jazi
alaa.hamdy said:
This is the solution....thanks
Click to expand...
Click to collapse
nice share,,,
solved s820...
does nvram.img file needed with secro-sign.img to retain lost sr.no and imei no mac
does nvram.img file needed alongwith secro-sign.img file to retain the lost imei no sr.no mac address and bluetooth settings in meditek 6737m device name moto c plus.
before i asked many people for fix but no correct solution is got but ( thanks for devs support). now i experimented and solved imei and efs partition currupted by qcn method
NOTE: ( third party qualcomm imei changing softwares will not work i tried many but no use)
steps
1. first download tools and install
2. go to qpst.exe in c:/programfiles/qualcomm/bin/qpst
3. now connect your phone open port by dialing(*#*#76937#*#) in stock
4. check whether qualcomm diagnostic port is enabled or not in device manager
5. if it shown enabled and device info its connected through diag port in qpst
6. now click software download and take backup of ur partition and save as (.qcn) and click on start it will read ur partition and
xx.qcn file will created(xx is any name)
7. now open hex editor search your imei number with [08xa] x is your starting digit of imei example(087a) for second imei click
find next option
8. now open your imei convertor and palce your imei and click convert
9. replace that converted imei in the form of hexadcimal replace with old imei same for second imei
10. important thing is while saving the file only by (save as) which is important if any mistake is happen we cant recover after
restoring in efs partition.
11. after saving again go to qpst npw go to restore option now click on start .
thats it! you got imei and signal:laugh::laugh::laugh:
i struggled 3 days for this to find correct way recover my ime
tools here
I would suggest to install Xposed and you can find IMEI changer in the download section. This will change only one IMEI number though. I mean IMEI1=IMEI2.
Another option is to use DFS tools.
And a 3rd option is to use Xiaomi (or similar for dual SIM) IMEI changer, you can use it to change both IMEI numbers.
All can be done provided that you have the box that the phone was packed in with the IMEI numbers on it.
valy_cta said:
I would suggest to install Xposed and you can find IMEI changer in the download section. This will change only one IMEI number though. I mean IMEI1=IMEI2.
Another option is to use DFS tools.
And a 3rd option is to use Xiaomi (or similar for dual SIM) IMEI changer, you can use it to change both IMEI numbers.
All can be done provided that you have the box that the phone was packed in with the IMEI numbers on it.
Click to expand...
Click to collapse
brother can you give links of that tools and restored backup up of other lemax2 so getting imei 0 and no service what should i do now?
marshharsha said:
brother can you give links of that tools and restored backup up of other lemax2 so getting imei 0 and no service what should i do now?
Click to expand...
Click to collapse
Go to the section Guides where you have posted in a topic with "unlock bands..." There you have all what you need in the OP. Connect your phone in DFS tool, check the section where you have IMEI and update it.
Or use what I wrote with Xposed and IMEI changer.
PLEASE DO NOT CREATE ANY MORE THREADS!!!
valy_cta said:
Go to the section Guides where you have posted in a topic with "unlock bands..." There you have all what you need in the OP. Connect your phone in DFS tool, check the section where you have IMEI and update it.
Or use what I wrote with Xposed and IMEI changer.
PLEASE DO NOT CREATE ANY MORE THREADS!!!
Click to expand...
Click to collapse
thank you very much and sorry for the in convenience
valy_cta said:
Go to the section Guides where you have posted in a topic with "unlock bands..." There you have all what you need in the OP. Connect your phone in DFS tool, check the section where you have IMEI and update it.
Or use what I wrote with Xposed and IMEI changer.
PLEASE DO NOT CREATE ANY MORE THREADS!!!
Click to expand...
Click to collapse
sir i downloaded i triedwrite imei but its only sim 1 imei apearing
sim2 showing unknown
Search for "WriteDualIMEI(W+G_eMMC).exe" file. Once you found it, check instructions on google to change the IMEI. It is working for Xiaomi devices as far as I remember. I tried on LeMax2 and it worked. I said I'll do a guide but time did not allow and also I forgot later on. For sure you can find instructions on xda as well.
This is the only tool I found to change both IMEIs.
Good luck!
---------- Post added at 11:38 AM ---------- Previous post was at 11:26 AM ----------
valy_cta said:
Search for "WriteDualIMEI(W+G_eMMC).exe" file. Once you found it, check instructions on google to change the IMEI. It is working for Xiaomi devices as far as I remember. I tried on LeMax2 and it worked. I said I'll do a guide but time did not allow and also I forgot later on. For sure you can find instructions on xda as well.
This is the only tool I found to change both IMEIs.
Good luck!
Click to expand...
Click to collapse
I'll write down the instructions for you.
1. Phone should be rooted, adb drivers installed
2. Connect the phone to PC and select MTP and USB debugging
3. Open command prompt from Start. In Run, type cmd.exe
4. Type in the command prompt the following: adb shell
5. Then it should show [email protected]_x2:
6. Then type: su
7. Grant access on the phone
8. Then it should show [email protected]_x2:/ #
9. Type: setprop sys.usb.config diag,adb
10. The phone will go to Diag mode, check in device manager if it's like this. It should show at section Ports: Qualcomm HS-USB Android DIAG 901D (COM6). "6" is an example.
11. Open the WriteDualIMEI app and you should see in COM: COM6. This means that device is connected and you can type in the IMEIs.
12. Press START and that's it.
I understand that this may be considered duplicate. However due to the title of the previous thread clearly stating that the effort there is closed, I though I open this up. I would really love to get more 4g bands working as I have no LTE service in my area. Here is a post from the aforementioned thread.
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Maybe Possible Solution
Just found this thread after I unlock carrier locked my Hisense B16C2G phone that can't be unlocked for almost 3 years. This is just hypothesis, I suggest to try this with concern.
There are several file that determine bands capability in the devices. Most of it is in NV partition, but from the discussion I know that you guys have tried some popular ways to unlock it, but it failed. Like my phone at first i believe its hardware locked too, but i just discovered some Chinese article about unlocking oneplus device. Maybe you can try it too.
Here it is:
1. Connect to QPST and open EFS explorer
2. In policyman folder there are 3 file that most likely can be the cause of this network restiction
carrier_policy.xml
post.xml (in my phone there is none)
rat_mask (in my case this file that restrict my network even after I change NV values to support all bands)
3. Compare all three file with other phone's that most likely have same architechture (maybe MI8 or Pixel). For rat_mask, make sure it have same bits number(compare with Hex Editor)
4. replace that carrrier_policy.xml(and any file that contain this name) and rat_mask with modified files or use you can use other unrestricted phone's instead
These file originally in modem.img. Some phone replace them back with the original file when boot, you can modified init.radio.sh to prevent that.
We can modify carrier_policy.xml in modem.img and flash it to the phone but i cant find where rat_mask located
5. Reboot and hope if it solve your problem
I can't find any reference about how to generate unrestricted rat_mask and device_config so make sure you backup your original file before you make modification. Sorry I can confirm whether it will work or not because i don't own poco
NB: I solve my problem just with replacing carrier_config.xml and rat_mask. There is a file called device_config, be careful with this file because it control how the phone modem interact with qpst too, wrong modification can cause you cant connect to PC even in diag mode.
https://forum.xda-developers.com/poco-f1/help/poco-f1-lte-bands-unlock-t3835467/page22
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Does the above information help at all with this effort? I'm not quite savvy enough to pursue this on my own. I also found the below thread which describes a process which is apparently still working for many Qualcomm devices including Xiaomi. Has this method been attempted with the Poco F1?
http://in.c.mi.com/thread-527028-10-1.html
I sold my Poco and took over my GF's which was on 10.2.3. I had LTE at my place, confirmed with speed test and LTE app. After upgrading to 10.3.4 today I no longer have LTE. I've tried switching back and forth between APNs to no avail. Any ideas?
Any updates, did you got it working? I need to unlock B5 and 28.