Database Users

[Q] Help repairing my IMEI with QPST and EFS Professional tools

Hello again folks,
I opened another thread regarding this problem I have, but since no one replied, I did some research and made some progress. Here's what happened: my cousin bought me an gt-i9301i in the UK, made a 5 min call or more with her SIM as instructed, and sent me the phone here in Brazil. When I received, the phone asked for the SIM network unlock PIN. I tried to unlock it by myself, with no success. Before sending it to a local store to try unlocking it, the only things I did were flashing a Chain Fire rom to root it, and then flashed a Stock rom to turn it back to its original state before sending it to be repaired. The store "unlocked" the phone, but now my IMEI is gone.
In the last days, I'm trying to fix it using QPST and the EFS Professional tools, as instructed in this thread (http://forum.xda-developers.com/gal...warning-guide-backup-restore-imei-nv-t1946915) and also this external tutorial (http://droidmodderx.com/galaxys3/?page_id=79).
I did the following procedures on my phone using its stock ROM, with USB debugging on, and tried with both root access turned on and off.
This is what I achieved so far: I connected my phone to QPST (by the way, the working code for my S3 Neo phone is *#0808#), and after turning on the RNDIS + DM + MODEM mode on, made a backup using the "Download" QPST tool. I tried to edit that backup (the file has about 260 Kb) using the "RF NV Manager", as instructed in the second post I mentioned, by going to the item 550 and writing my IMEI in blocks and everything, and then creating a separate QCN file. When I try to restore the new file using the Download QPST tool, which supposably has my IMEI number on it, I receive the message "Received an invalid command from the phone" at just 1%. When I try to restore the original backup, it goes to 100%, but in the end, I receive the message "Could not Reset the Phone. Communication Errors Occurred". When I try to edit my IMEI directly on the phone, when I reboot it and turn it back to MTP + ADB, my IMEI is still showing nothing.
Using the EFS Professional Qualcomm NV Tools, when I try to write my IMEI on the phone, using the Secure Ops. tab, I recieve an error message saying NV_ERR_BAD_SECURITY_MODE, and when I try to edit my QCN backup, I receive the message "Unable to write selected byte data to QCN Backup!".
Any thoughts on what else can be done to restore my IMEI?
Thanks

EFS Professional says "Phone connection has been lose".

Hi, i trying to write my lose imei (i obtain from my box) with EFS Professional again, because after to flash, the phone says imei null.
In my PC always says "phone connection has been lose" when i press connect. Today i try in other pc and in the first time the phone connect fine, But the phone restart and not connect again.
Whats happened? How to solve??
Sorry for my english

Write certificate? (not sure)

Hi, so after messing up my NVRAM I've managed to restore my IMEI and there is connectivity, but it's emergency only. It can see the SIM card, but can't connect to a service provider for normal connectivity. I've looked into *#0011# and it says IMEI Cert failed -4, is there any way to fix this, and would it make the phone functional again?

No IMEI || CDS information is not available in mtk engineering mode

Greetings guys!
I've flashed stock rom (6.0) in my phone using SP flash tool with the setting "format all and download" and now I've lost my imei number and even in mtk engineering mode the CDS information is not present under the connectivity tab.
I thought that the problem was with the stock rom and so I flashed MIUI 9 rom by macBlaze. But still I can't get my imei number and there is no CDS information in the mtk engineering mode.
I'm really stuck here.
Any help would be greatly appreciated!!
Thank you
Screenshots:
https://drive.google.com/file/d/1sBNh3FnzkMq0cPUGfb2h3gZd_Jbyl26Q/view?usp=drivesdk
https://drive.google.com/file/d/18mYUN1PpplxPfyiFdGFRn37KAo7CvaWJ/view?usp=drivesdk

same thing is happened to me too
plz somebody help !!!!!!!!!

Maui Meta
try sp maui meta tool it will be able to fix your imei problem.

What is the main reason why imei is important in custom roms?

edarick said:
What is the main reason why imei is important in custom roms?
Click to expand...
Click to collapse
Imei controls the communication side of things,
Without it the device will not even acknowledge a sim card,

I've flashed stock rom in my karbon k9 smart 4g phone using SP flash tool with the setting "format all and download" and now I've lost my imei number and even in mtk engineering mode the CDS information is not present under the connectivity tab. i tried my downloading cds.apk aslo but mobile not allowing to install
I tried sn write tool also. but my windows 8 does not detecting my mobile using usb cable. please help me

Same Issue with My LAVA Iris 88s
I've flashed stock rom in my Lava Iris 88s smart 4g phone using SP flash tool with the setting "format all and download" and now I've lost my IMEI number and even in mtk engineering mode the CDS information is not present under the connectivity tab. I tried my downloading cds.apk, aslo but mobile not allowing to install. I am not able to root my mobile.
I tried SN write tool also. but my windows 8 does not detecting my mobile using usb cable. please help me

help,No network issue after complete flash

My yu yureka a05510 was stuck in bootloop automatically. To resolve the issue i downloaded Yu_Yureka_AO5510_V2_15.04.15_lollipop and flashes it with YGDP software. After setting up the device ,my network is unavailable. The sim detects on both slots but there is no network. I went to the *#*#4636#*#* and tried chaging the settings there by turning off the radio but no luck.
I even deleted the access points and setting the AP manually but still no network. I flashed modems from stock rom but i the cellular network is still not available.
Can anyone help me with this problem

Bro I will also have the same problem
How to fix this please help me bro

did you find any solution?

Did you find the solution?

1 Download this file
https://androidfilehost.com/?fid=745849072291689565
2 extract it
3 rename flash.txt into flash.bat
4 connect your phone into fastboot mode
5 open the flash.bat file, commands will run automatically
6 reboot your phone
Done

Any data lose?

Check the IMEI.
If it syas 0123456789 or some thing like that then your IMEI number gone.
You have to restore IMEI number
then only network signal connects