5,600,429 Members 32,668 Now Online
XDA Developers Android and Mobile Development Forum

Problem with ROM installation after IMEI repair with box

Tip us?
 
avia99
Old
(Last edited by avia99; 10th December 2013 at 10:58 PM.) Reason: missing header
#1  
Junior Member - OP
Thanks Meter 0
Posts: 1
Join Date: Dec 2013
Default Problem with ROM installation after IMEI repair with box

I wanted to share with you a problem I had with my phone (I9300):

1. I upgraded the firmware to 4.3 through KIES.
2. Than i downgraded to version to 4.1.2 but did not back up EFS.
3. IMEI + SN were corrupted.
4. After many unsuccessful attempts to recover the IMEI-I had to go to the lab and restore the IMEI + SN with a box (i think it is z3x).
5. IMEI + SN successfully recovered - Netwrok is back. Rom is now 4.1.1
6. I installed version 4.3 via ODIN (without modem). This time you backed up EFS.
7. IMEI + Basband = unknonwn. Of course there was no network.
8. I Replaced EFS from the backup - didn't help.
9. I installed modem.bin MG4 => IMEI + Basband + S/N recovered -network was not - (emergency call only)
10. Zuluman patch didn't worked
11. Downgrade to 4.1.2 caused lost IMEI + SN.
12. I Replaced EFS from the backup- IMEI recovered - but there was no network.
13. ariza patch did not work.
14. I went back to the lab restore the IMEI again.

The conclusion from this long story - after restoring IMEI with a box - it is impossible to upgrade/ replace Rom without losing network again.
every ROM installation will require IMEI repair with a box.

I wanted to get confirmation from the experts who deal with boxes to restore IMEI.
 
dhiru1602
Old
(Last edited by dhiru1602; 11th December 2013 at 12:52 AM.)
#2  
dhiru1602's Avatar
Recognized Contributor / Recognized Developer
Thanks Meter 10661
Posts: 1,515
Join Date: Aug 2010

 
DONATE TO ME
Why so much pain?

You should have flashed the modem from 4.3 when you have downgraded to 4.1.2. That would have been a simple fix.

Your issue is because the original EFS has a security checksum which is not present if your rebuild the IMEI with any box. This security checksum is checked by the modem to confirm if the EFS is genuine. Because of that, you will have to flash a patched modem (which bypasses the EFS checkum) each time you update to a new firmware. You will need this: http://forum.xda-developers.com/show....php?t=1918601

Just don't keep trying random things. Do everything step by step. Do you have a backup before you had the IMEI repaired with a box?
 
JJEgan
Old
#3  
Senior Member
Thanks Meter 4406
Posts: 23,036
Join Date: Oct 2010
Quote:
Originally Posted by avia99 View Post
I wanted to share with you a problem I had with my phone (I9300):

1. I upgraded the firmware to 4.3 through KIES.
2. Than i downgraded to version to 4.1.2 but did not back up EFS.
3. IMEI + SN were corrupted.
4. After many unsuccessful attempts to recover the IMEI-I had to go to the lab and restore the IMEI + SN with a box (i think it is z3x).
5. IMEI + SN successfully recovered - Netwrok is back. Rom is now 4.1.1
6. I installed version 4.3 via ODIN (without modem). This time you backed up EFS.
7. IMEI + Basband = unknonwn. Of course there was no network.
8. I Replaced EFS from the backup - didn't help.
9. I installed modem.bin MG4 => IMEI + Basband + S/N recovered -network was not - (emergency call only)
10. Zuluman patch didn't worked
11. Downgrade to 4.1.2 caused lost IMEI + SN.
12. I Replaced EFS from the backup- IMEI recovered - but there was no network.
13. ariza patch did not work.
14. I went back to the lab restore the IMEI again.

The conclusion from this long story - after restoring IMEI with a box - it is impossible to upgrade/ replace Rom without losing network again.
every ROM installation will require IMEI repair with a box.

I wanted to get confirmation from the experts who deal with boxes to restore IMEI.

You are posting in the wrong forum .
 
Jonny
Old
#4  
Jonny's Avatar
Forum Moderator
Thanks Meter 7288
Posts: 7,442
Join Date: Jul 2011
Location: Cheshire

 
DONATE TO ME
In the interests of keeping the number of EFS/IMEI threads popping up to a minimum, I'm closing this as there is a full reference thread on what to do located here >>> http://forum.xda-developers.com/show....php?t=2393289
THREAD CLOSED
Subscribe
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes