Hi,
I recently tried to flash qcn on my OnePlus 7T and it seems that I lost efs data (some sensors aren't working now).
To extract qcn or xqcn file you need to enable usb diagnostic port (in phone app dial *#801# and click the second and fourth buttons).
Doing so will make your phone detectable in Qualcomm softwares.
To extract qcn, use QFIL and click Tools>QCN Backup/Restore. In the field "QCN file path" write the path to the directory you want to save the backup, and also write the name of the file that will be created. Then click Backup QCN.
To extract xqcn, use QPST Software Download, and go to the Backup tab. Click Browse to select the destination for the xqcn backup, and set a name to the backup that will be created. Then click start.
Doing this process is quick and should take approximately 5 minutes if you already have the QPST software.
In case you need it, I have the installer from Qualcomm for QPST 2.7.480 :
http://www.mediafire.com/file/nm0zlac003tn41j/qualcomm_qpst_setup_2.7.480.zip/file
Also you have to know that your IMEI will be visible in these backups, and you should remove them using an hex editor to replace it with some random numbers or zeros before sharing it with me or anyone.
If you need informations on how to find your IMEI in your qcn or xqcn backup using an hex editor, I will explain it in this thread too.
Thank you
Are you saying with these same methods you lost efs data or you did a mistake while flashing ?
Thanks @egekonuk for your reply.
In fact I was trying to flash international rom version on my TMobile Oneplus 7T by editing MSM download tool (using x64dbg which is a software sharing many functionalities with IDA Pro).
I did not managed to flash international but yes, I lost efs in the process.
Superboy58 said:
Thanks @egekonuk for your reply.
In fact I was trying to flash international rom version on my TMobile Oneplus 7T by editing MSM download tool (using x64dbg which is a software sharing many functionalities with IDA Pro).
I did not managed to flash international but yes, I lost efs in the process.
Click to expand...
Click to collapse
Just curious why you didn't do the other posted method to go from TMO to international? I did the other method and it worked out just fine. Of course I don't know if that very friendly person is still doing unlocks or not.
Is there a difference between the QCN and XQCN between ROMs?
@amcferrin90 yes I didn't mentioned that but it's because my device was not SIM unlocked by T-Mobile. I bought it on ebay and I was not aware it was not paid off, and seller refused a return.
If I was SIM unlocked, I'd be able to unlock the bootloader and flash the international rom using fastboot.
I did not understand what you meant about qcn, xqcn and roms.
To me, qcn and xqcn are different because xqcn backups are larger than qcn ones.
I think xqcn contains some efs data, but I'm not sure about this.
Would you be ok to make a xqcn backup and share it with me?
Thanks
I also need a backup of QCN.(please)
Related
Hi,
I write wrong firmware and bricked phone, then i restore old one but i got empty imei number.
I read about MauiMeta and try to recover Imei number, but i don't have proper modem file (file BPLGU.....). I try with file from k430dsy (http://forum.xda-developers.com/lg-k10/development/lg-k10-k430dsy-original-modem-file-t3481543), but it didn't match. Is there possible to extract it from oryginal KDZ file? Maybe someone have this file.
szuineg said:
Hi,
I write wrong firmware and bricked phone, then i restore old one but i got empty imei number.
I read about MauiMeta and try to recover Imei number, but i don't have proper modem file (file BPLGU.....). I try with file from k430dsy (http://forum.xda-developers.com/lg-k10/development/lg-k10-k430dsy-original-modem-file-t3481543), but it didn't match. Is there possible to extract it from oryginal KDZ file? Maybe someone have this file.
Click to expand...
Click to collapse
If you know your original imei nr. you can download your firmware with lg mobile support tool.
What apout lg bridge update error recovery?
Or in case you have your original firmware you should search for mobileuncle tool, there is an imei repair thing for MTK devices.
I mentiuon several times on whatsapp group to make a backup of the ID's partitions before changing firmware.
To restore it now you will need a box now.
How does one change the IMEI?
I've tried this without success:
1. Root your device
2. Download and install QSPT and UltraEdit (HxD would also do).
3. Download an IMEI converter.
4. Get hold of a working qcn (I used my own which I know works in my other P2). Open the file by using Ultraedit/HxD and try to locate the IMEI. In my case it often starts with "08 8A...".
5. Use the IMEI converter and input your true IMEI. Memorize the output.
6. Return to the qcn file. Write it over with the IMEI output you got in step 5.
7. Save the file.
8. In a terminal enter:
su
setprop sys.usb.config rndis,diag,adb
9. Restore the qcn file from step 7 by using QSPT. You click on QPST configuration and go to "ports". If your port isn't already visible go to the device manager, look up the Qualcomm Diag port and add it. For me I believe it's COM9. Now you click on "start clients", then "software download". Tick the "Allow phone/file ESN mismatch", locate your saved qcn file and start restoring it.
10. All done. Reboot!
Apparently some XDA members managed to get their signal back once the modem was deleted so I guess somebody should know.
Other methods I've tried include flashing stock MM and installing OTA until you're on S251 as well as restoring an older full TWRP backup from when your signal used to work. Needless to say, they didn't work.
This procedure worked for me. Lenovo K6 Power with Qualcomm proc.
Successfully I found other users qcn file and wrote my IMEI in it.
Signal is back but diag port disappeared and I can't turn it on again.
WhatsApp me or call me 8436243173
WHERE CAN I GET THIS QNCN ? I'm confused
I had same problem, here are my steps with qcn backup file from working P2. My IMEIs stays right. Sorry for my english and here is my link and read next threads from that forum.
https://forum.xda-developers.com/showpost.php?p=73444145&postcount=70
mL-7 said:
This procedure worked for me. Lenovo K6 Power with Qualcomm proc.
Successfully I found other users qcn file and wrote my IMEI in it.
Signal is back but diag port disappeared and I can't turn it on again.
Click to expand...
Click to collapse
Have K6 power with IMEI turned 0 after fastboot erase modemst1 and 2. Could you please detail the steps to restore IMEI?
How can I restore IMEI of my phone. I also don't have any backup of IMEI. Tried a lot of methods but most of them are old and not working. Do we have a chance here?
Edit;
I restored some other imei using qpst and .qcn file but now I it has become a mess to write my own imei by coding in qcn file.
is your problem solved?
I need experts review and help to resolve my issue last night i am update my phone s20 ultra G988B/ds to its original software everything working fine except network i was using root phone it was fine on all networks but after updating my imei status goes to NG(not good) sim accepted phone but shows emergency calls both imei shoes but network not working plz give me suggestions and issue solution. I am again root my phone but still not working networks plz help
S20 ultra imei status NG
Why you experts not solving my issue no comments at all?
Bro i've posted same kind of post just now i hope someone replies soon otherwise i'll try z3x software or chimera and let you know about the results, i think if your imei is not corrupted then cert file will do the wonder.
well hey everyone same issue i have s20 plus phone was rooted and i flash the firmware and now imei is NG i trid the chimera tool but no luck if u find any fix please help me.
did you guys resolve it ?
i may have an idea
Any fix
do you guys even search before asking?
First, do a TWRP backup, all partitions including efs & modem.
Open the root explorer app, open the efs folder, delete the files named nv_data.bin
, nv_data.bin.md5 & the folder called imei. Then open twrp, wipe all partitions. Flash the latest firmware with Odin.
That solution work???
juda iskariotsky said:
do you guys even search before asking?
First, do a TWRP backup, all partitions including efs & modem.
Open the root explorer app, open the efs folder, delete the files named nv_data.bin
, nv_data.bin.md5 & the folder called imei. Then open twrp, wipe all partitions. Flash the latest firmware with Odin
Click to expand...
Click to collapse
Hi,
I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full nandroid backup before.
Everything went fine until I noticed that during the booting of the phone after the flashing, it didn't ask for the SIM code as it used to. And once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network.
I tried switching Sim cards with another mpbile. My SIM worked fine in the other mobile and the other SIM was not recognized by my mobile.
I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done before. Nothing. Same thing with the modem partition. Nothing.
I tried then to restore the EFS from a safety backup that I had using Fastboot. Nothing.
I could still try to restore the full nandroid backup done at the beginning, but I forgot to take out pin protection code before taking the Nandroid, and I've read somewhere that it could be an issue after restoring the system. I might not be able to restart the phone and be obliged to factory reset, witch I would really like to avoid. And anyway, if restoring with Fastboot did not work, I wonder if the full restore would change anything.
Anyway, anybody has a magic idea about might be happening? A little help please??
Same problem!
I'm having the same problem. I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full TWRP backup before, including my EFS partition.
I'm seeing this too:
>"once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. >They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network."
I did the same thing and had the same no result.
>I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done >before. Nothing. Same thing with the modem partition. Nothing.
I'm looking for a solution too.
I came across this: https://forum.xda-developers.com/oneplus-5t/help/baseband-imei-lost-t3834334 and this: https://www.getdroidtips.com/how-to-repair-and-fix-imei-baseband-on-oneplus-5t-a5010/
I've been reluctant to try and rebuild the QCN file, but it might work.
Working on this
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
rootlessabroad said:
I'm having the same problem. I have my 5T rooted with Magisk and TWRP recovery.
I've upgrated from OOS 9 to official OOS 10.0.1 flashing with TWRP as usual. I did a full TWRP backup before, including my EFS partition.
I'm seeing this too:
>"once the mobile had fully restarted, I could see 2 new icons on top of the screen picturing the 2 sim cards that can be contained in a OnePLus 5T. >They were striken through, as if not present, when I had My SIM in Slot 1. And so, no mobile signal, no data network."
I did the same thing and had the same no result.
>I've read that I could be facing problems of damaged EFS. So I tried restoring through TWRP the EFS partition from the Nandroid I had done >before. Nothing. Same thing with the modem partition. Nothing.
I'm looking for a solution too.
I came across this: https://forum.xda-developers.com/oneplus-5t/help/baseband-imei-lost-t3834334 and this: https://www.getdroidtips.com/how-to-repair-and-fix-imei-baseband-on-oneplus-5t-a5010/
I've been reluctant to try and rebuild the QCN file, but it might work.
Click to expand...
Click to collapse
Hi
I've found a code (*#06#) in a page that gives you the MEID. It worked for me. Hopefully, I have the correct MEID too. The code for the IMEI did not show anything. I'll check the lynks you posted later today.
Thanks for sharing!!
PS. I can not include the lynk to codes page as I'm too junior a member and XDA forums won't let me.
rootlessabroad said:
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
Click to expand...
Click to collapse
So I've tried te rebuild the QCN file. But my issue is that I can't make the ADB comunicate with my mobile. It is as the mobile was not plugged in?? The usb debugging is activated. I can browse the mobile memory from the computer. But the ADB doesn't lynk with the mobile; when you type adb devices, it says List of devices attached and nothing after. Any idea what might be happening?
What about you rootlessabroad? could you fix it?
rootlessabroad said:
So I'm working on reprogramming the IMEI using the Qualcomm tools. I was able to use them to back up my phone and see the it still has the correct MEID.
However, the .gcn file linked to below isn't accepted, with a weird error: "The file model MSM8998 does not match the phone model MSM8998. Please select a file for the MSM8998."
I'm not sure what it isn't liking. In theory, I think I could just put the IMEI numbers into the QPST programming tool, but I'm not certain where they would go and the correct format for them (with the chksm at the end or not?).
This is as far as I've gotten. I'm looking for an alternate .qcn or .qcnx (which is the kind the tool generates when saving files).
Click to expand...
Click to collapse