[Galaxy S III General] lajournalista:
Hi all,

First post ever after years of using your advices.

My writted english is pretty bad, so my apologizes in advance. If you understand spanish you can also see this tutorial in my own languaje where maybe I explain better (lajournalista.cl/tecnologia/tutorial-update-s3-i9300-a-android-4-3-despues-de-reparar-imei/)

This are the steps that I follow to update my S3 I9300 from 4.1.2 to 4.3 after lost & recovery my IMEI (0049) (by box)

So, it's probable that if you never lost your IMEI the bottom half of this tutorial is not needed, the first part is ODIN update but I'm going to explain anyway.

This is my first tutorial, so I really appreciate any question to improve the info, advice to make it better or ask for credit if something here is yours and I didn't have your name here.

IMPORTANT:

This tutorial is what works for me, please if you don't what are you doing be carefull ALWAYS backup your phone in case something whent wrong. I'M NOT RESPONSABLE IF YOU BRIKE YOUR PHONE

You must have a backup of your EFS folder

In my case, the IMEI whas recovered by box

My phone is from Entel company in Chile model GT-I9300

AGAIN... make a backup of your EFS folder AND a complite backup of your phone

I used the following apps/files for this tutorial:

- ROM stock from Brazil ZTO I9300UBUGMK6_I9300ZTOUGMK3_ZTO downloaded from Sammobile, I choose this ROM cause the chilean is not available yet, but usualy is the same ROM used in Brazil

- Kernel & modem parcheados by yesilcin.com XXUGMK6 (I can't remember from where I download this files, so if this is your hint clame your credit)

- Backup of your EFS folder, specifically the files nv_data.bin and nv_data.bin.md5

- Root Explorer

- SuperSU v1.65

- UPDATE SuperSU v1.80 (optional)

- ODIN 3.09

- CF Root v6.4

Let's do this:

1.- Extract (unzip) the firmware file

2.- Open Odin3 v3.09 in admin mode from Windows 7 and up

3.- Restart phone in download mode (Press and hold Home + Power + Volume down buttons)

4.- Connect phone and wait until you get a blue sign in Odin with something like 0:[COM7] & <ID:0/007> Added!! in “Message”

5.- Click in AP and select the file I9300UBUGMK6_I9300ZTOUGMK3_ZTO.tar.md5.

6.- Wait till ODIN check the file and when you have a check mark in AP make sure that Auto reboot and F.Reset Time are checked and that Re-partition is UNCHECKED

7.- Press Start

8.- After reset and when the upper left box is green and say PASS your are Ok... this is after white and blue color and a lot of steps boot, system, modem, etc.

*** Until here, this is a regular update, if your phone have signal and your IMEI is ok, you're done and can skip the next steps***

*** If your IMEI is right but still "No signal" follow the next steps***

9.- After reset go to Config --> More --> About the device click severel time in "Compilation N°" till activate the Developer Options

10.- In Developer Options activate USB debugging

11.- Turn off the phone and go back to ODIN (repeat steps 2, 3 & 4)

12.- In AP put the CF-Root-v6.4 to root your phone, press Start and wait till ODIN says PASS

13.- Then copy this files in to the SD:

- Kernel & modem parcheados by yesilcin.com XXUGMK6

- Backup of your EFS folder, specifically the files nv_data.bin and nv_data.bin.md5

- Root Explorer APK

- SuperSU v1.65 APK

- UPDATE SuperSU v1.80 (optional)

14.- Turn off the phone and turn on in Recovery mode (home + power + volume up)

15.- Install the modem and kernel

***This pictures are from IOSDROIDE

DSCF1243.jpg

DSCF1245.jpg

DSCF1246.jpg

DSCF1247.jpg

***When you reboot your S3 is going to be with generic IMEI***

16.- Reboot and install SuperSU v1.65 and Root Explorer

17.- Go to Root Explorer give it SuperSU permission and make sure in the upper left corner says "Mount r/o" and a button that says Mount R/W if this is the other way, press Mount r/o

18.- Copy the nv_data.bin AND nv_data.bin.md5 files from your backup to the EFS folder in your phone

19.- Once copied click on the new files in your phone and "Change Owner" to:

Owner 1001-radio

Grouping 1001 – radio

20.- Restart your phone... Now you should have signal and your IMEI is back

Files used:

4shared.com/zip/-054KS6iba/I9300UBUGMK6_I9300ZTOUGMK3_ZTO.html

4shared.com/rar/iLTvF5Hxba/S3_online.html

***Sorry I'm too new to post links