I9506 lost signal after unlock and update software from 4.2.2 to 4.3

[cristi33]

I9506 from orange france vers 4.2.2, after unlock signal drop, imei and baseband was ok. after firmware update to 4.3, imei was changed from 3586720538xxx in 35867205223xxx...?!?! now signal oscillates... how can I restore original imei in to the phone, how can i relock, restore security and unlock it with codes? I can't downgrade firmware from 4.3 to 4.2.2...

[cristi33]

with new update, I choose repair with tick skip back-up/restore NVM, on restore settings I tick reset EFS, put original IMEI and SN

Selected model: I9506
Selected port: COM32 SAMSUNG Mobile USB Serial Port 
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: GT-I9506
Android version: 4.3
Product code: GT-I9506ZWAFTM
Phone version: I9506XXUBMK7
PDA version: I9506XXUBML5
CSC version: I9506FTMBML1
IMEI: 358672052231374
Phone S/N: RF1DB5S44ZE
Checking Super user right... true
Backuping MMCBLK... OK
Writing data to phone... OK
Reseting EFS... OK
Rebooting phone... OK
Waiting phone... OK
Bypass MSL... OK
Repairing... OK
Disabling TEST mode... OK
Reseting... OK
Repair done
Done with Samsung Tool v.17.0

but no registering on the network

[shak360]

Try the "repair network" option first

and post result .

also try with latest version 17. 0

[cristi33]

Originally Posted by shak360

Try the "repair network" option first

and post result .

also try with latest version 17. 0

yes, I used the latest version, 17.0. Where is "repair network" option for I9506?

[shak360]

Sorry yes your right option is greyed out - have you tried to write a different imei?

also try a new sim card?

Also what happens when you attempt the downgrade?

[cristi33]

yes, I try with 3 others sim carrier. with one I have signal, but signal drop after firs call, with 2 others no network. when I do search network, all networks found, but not registering in home network.
this is the error when I'm trying to downgrade from 4.3 to 4.2.2

Selected model: I9506
Selected port: COM32 SAMSUNG Mobile USB Serial Port 
Selected port speed: 115200
File analysis... OK
Total file size: 0x7CB0F0A0
Searching USB Flash Interface... detected COM23
Setup connection... OK
Reading PIT from phone... OK
Saved to C:\Program Files\Z3X\Samsung\SamsungTool\Pit\I9506_20-2-2014_21-35-47.pit
Sending aboot.mbn... Error
Done with Samsung Tool v.17.0
Done with Samsung Tool v.17.0

[a65333002]

Hi，bro.
copy I9506_mmcblk0p12(date)，I9506_mmcblk0p13(date)，I950 6_mmcblk0p18(date) to phone'inernal card from C:\Program Files\Z3X\Samsung\SamsungTool\Backup
root the phone,and rename to i9506_mmcblk0p12.img,etc
and download adb command
run cmd
adb shell
su
if=/sdcard/I9506_mmcblk0p12.img of=/dev/block/mmcb1k0p12
if=/sdcard/I9506_mmcblk0p13.img of=/dev/block/mmcb1k0p13
if=/sdcard/I9506_mmcblk0p18.img of=/dev/block/mmcb1k0p18
reboot
now,your phone comes back to the original imei,and lost unlock,you can unlock it by the code.

[cristi33]

C:\adb>adb shell
shell@ks01lte:/ $ su
su
root@ks01lte:/ # if=/sdcard/I9506_mmcblk0p12.img of=/dev/block/mmcb1k0p12
if=/sdcard/I9506_mmcblk0p12.img of=/dev/block/mmcb1k0p12
root@ks01lte:/ # if=/sdcard/I9506_mmcblk0p13.img of=/dev/block/mmcb1k0p13
if=/sdcard/I9506_mmcblk0p13.img of=/dev/block/mmcb1k0p13
root@ks01lte:/ # if=/sdcard/I9506_mmcblk0p18.img of=/dev/block/mmcb1k0p18
if=/sdcard/I9506_mmcblk0p18.img of=/dev/block/mmcb1k0p18
root@ks01lte:/ # reboot
reboot

nothing happened with my phone...

[cristi33]

few minor additions: with sim card from orange romania -> not registering on the network, with sim card from cosmote romania -> i have network, i can do calls from phone

[denard]

I have the same problem with mine but 4.3 no network or low network before and after i unlock.try 03 different Card Sim but no network.when search for network,display but can't register on network. what the solution? i want to relock the phone and return it like that to customer but how to do? i write backup nvm but it don't relock the phone.

Selected model: I9506
Selected port: COM613 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: GT-I9506
Android version: 4.3
Product code: GT-I9506ZWAFTM
Phone version: I9506XXUBMK7
PDA version: I9506XXUBML5
CSC version: I9506FTMBML1
IMEI: 358672051545204
Phone S/N: RF1DA8A1MWP
Checking Super user right... true
Backuping MMCBLK... OK
Checking phone at COM613
Backuping NVM... OK
Writing data to phone... OK
Rebooting phone... OK
Waiting phone... OK
Bypass MSL... OK
Unlocking... OK
Checking phone at COM613
Restoring NVM... OK
Reseting... OK
Unlock done
Done with Samsung Tool v.17.8

[lexro93290]

repair nvm with this file Network_FIX_v1_z3x

[blang]

Originally Posted by denard

I have the same problem with mine but 4.3 no network or low network before and after i unlock.try 03 different Card Sim but no network.when search for network,display but can't register on network. what the solution? i want to relock the phone and return it like that to customer but how to do? i write backup nvm but it don't relock the phone.

http://forum.gsmhosting.com/vbb/f453...-only-1841588/

[denard]

ok Sorry Sir but can i relock my phone?

[blang]

Originally Posted by denard

ok Sorry Sir but can i relock my phone?

Please switch phone to flash mode, backup file choise like pda, after this phone will be locked in original fresh status.

After this please read nvm and nvm full, attach here, i will creat for you network fix nvm using your phone nvm.

Waiting for nvm.

[alecsisvladimir]

Big Problem ! I hav a Sgh i9506 death boot ,i can't find a box for the moment to make him j-tag,do you have anny ideea ? please help me if you can,thx in advance