[G3 General] Robert LG:
Do it at own risk.

Hello evreybody!!!

After 1 months of hard work,I found out how to solve “Service disabled” (‘Current version not available for user”phone model:D855RE) no network error.

I know,that a lot of people have this problem with his device,so I decided to share it with you. ;)

I have bought D855 from alliexpress.It worked well with KitKat.When updated it with D85530 MM firmware,after booting the 2G\3G\LTE network is gone and in the screen appears a message “Service disabled”I have tried flash many D855 stock \custom firmwares,modems,restored several d855.qcn file but nothing.I was so disappointed,that the only solution is the motherboard replacement.But I talked with guy,and he said me,that my device can be a”Frankenstein”phone.(D855 body with D850 motherboard)It easily can be happened,if you buy a Refrubised phone from China)So that was my problem.When I flashed a D850 stock SW and restored a qcn from a working D850,my 2G\3G network worked like a charme.

My device has been through a lot of truble.(Soft and Hard brick,softwer version has become D855RE,Current version not available for user e.g)

So let’s start!

1.At first,make sure that in your D855 body,a D850 motherboard.

2.Download and install Lg Flashtools V1.8 and stock firmware for D850(LGD850AT-01-V10d-310-410-JUN-19-2014+0.tot).

from here:

http://xdaforums.com/showthread.php?t=2785089

3.Download LGUP 8974.dll(not d850.dll,with this dll,the flashtool will not allow you to flash the d850tot,because your currently device model is D855RE\V).

from here:

http://xdaforums.com/attachment.php?attachmentid=2473543&d=1387955530

4.Flash the LGD850AT SW and LGUP 8974.dll.After this step you will not have a network,but you will have a d850 model.

[If the flash procces isn't starting because of this error"ERROR CROSS DL (D855) to (D850) Sw Version",you must edit one Hex string on your downloaded LGD850 tot,

with the help of any hex editor. Then drag and drop your .D850TOT file into hex editor to modify it, Then click on search => Find. Type d850 or 850 and You will see this Hex string (not the same exact one but something similar),and modify xVLG-D850 to xVLG-D855\D855RE or D855V(Depending on your phone model)( https://yadi.sk/i/5ptKOYmQsaVZu ).Finally just click to the save butten,and flash the modified tot with lgup 8974 dll.]

5.After the success flashing,you must root your device and install the latest twrp on it.

6.Boot into recovery and restore efs partition backup from here :

https://yadi.sk/d/ZiKLY33jsZMSP

[After it you will have a 2G network but no 3G\4G network because of the imei of the device is 0.So you must restore it with QPST.

1.	Make sure you LG G3 is running the stock LG firmware.(in our case LGD850AT-01-V10d). If your phone does not have official firmware installed on it, restore it to stock first. Install the latest LG USB drivers on your computer.

2.	Now download the IMEI converter tool and unzip it.

3.	Download QPST (Qualcomm Product Support Tools) and unzip it.

4.	Open the QPST_2.7_378 and run the setup file to install it on your computer.

5.	Enable USB debugging on your device. You can find this option under Settings> Developer options. Connect your device to the computer.

6.	Run QPST configuration and click on Ports tab. Click on Add new port option.

7.	Your current port should show as COM4/5.

8.	Select the port and click OK. The port should come up on active phones.

9.	Select the phone and click the Software Download option from Start clients menu.

10.	Now click on Backup tab. You should see your phone’s port.

11.	Click on Start to initiate backup.

12.	Now navigate to C:/ Program Files/ qualcomm/ qpst/bin folder.

13.	Run RF_NV_Manager.

14.	Click File> Read from phone. Your phone’s IMEI number should appear on number 550; NV_IMEI_I

15.	If you do not see item 550, do not panic.

16.	Click on File> Read supported RF NV items.

17.	Click on item 550. You would see 9 blank fields.

18.	Now run IMEI Converter.exe.

19.	Now type your phone’s IMEI in Enter IMEI field. You can find your IMEI on your phone’s bill or the box your device came in.

20.	Then click on <Convert IMEI> button.

21.	You should see 18 digits in groups of 9.

22.	In RF_NV_Manager program, click on Hex by Write NV button.

23.	In the 9 boxes, type in the numbers from IMEI converter starting from left. Type in first group of two numbers in the first field, then go to the next field and type in second 2 digits.

24.	When you are done with doing this, click on Write NV option.

25.	Then click File> Read from phone.

26.	Item number 550 should appear now.

27.	Disconnect the USB cable and reboot it.

28.	Open phone’s dialer and dial *#06#. You should see your phone’s IMEI now.

That’s all!You are done!:good::good::good:

If I helped you,plz push to the thanks button .

Sorry for my bad English.