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Want to root my Samsung Galaxy s3 4G confused

Hello all,
I have read many posts about rooting the phone above but am confused.
All i want to do is root the phone and keep the original rom.
If i root it then update to 4.1.2 jellybean when its released for my phone do i have to root it again?
I really need to know step by step the process so i dont mess it up.
Firstly i beleive i need to backup my iemi is this http://forum.xda-developers.com/showthread.php?t=1946915 the correct procedure?
I then save that file it generates incase i need to restore is this correct?
I was then going to use this http://forum.xda-developers.com/showthread.php?t=1125414 but am confused where it says "Flash an Insecure Kernel before using Samsung Quick Root".
Where do i find an insecure kernal for the above phone?
I then read about ClockworkMod Recovery what does this do and should i use it?
Can someone please help me step by step as im really new to Android.
Sorry for so many questions but coming from years having an iphone to Android its like wow.
Cheers and thanks in advance.

Simply follow this thread by btemtd
http://forum.xda-developers.com/showthread.php?t=1967124
Absolutely everything you need to know is in there.
I would only use methods that are intended for i9305.
Sent from my GT-I9305 using xda app-developers app

Obagleyfreer i read this http://forum.xda-developers.com/showpost.php?p=32235061&postcount=1 and unsure of part 13.
I want to root but just keep the standard rom that the phone came with.
Also if i update to 4.1.2 jellybean do i need to backup and root again?

You just need to flash the zip that's linked in part 13 to get root access.
You do this in CWM recovery.
Sent from my GT-I9305 using xda app-developers app

Thanks Obagley.
Ok so if i root it then i upgrade to jellybean 4.1.2 which has not been released for my phone will i then have to root it again or do i just do it through cwm rcovery?

Android Noobie said:
Thanks Obagley.
Ok so if i root it then i upgrade to jellybean 4.1.2 which has not been released for my phone will i then have to root it again or do i just do it through cwm rcovery?
Click to expand...
Click to collapse
Hi
Seems like you ar pretty novice to this.
If you root you cant update to latest from Settings -》About -》 Update. Root makes it imposible that way.
Instead you have to flash the latest rom from www.sammobile.com using Odin (windows) and rootvit again.
Or you wait till some one kind pre roots the rom and makes it flashable through Clockworkmod (easiest way)
All the strange words you have to look up your self.
Sent from my GT-I9305 using XDA Premium HD app

Ok i check www.sammobile.com and i dont see a version of 4.1.2 jellybean for my phone.
Will the international versions of 4.1.2 work on my phone?
Will they have bloatware or carrier logos?
When i flash a rom do i have to flash the modem as well?
Can i just flash rom over rom or should i clean the cache first?

Android Noobie said:
Ok i check www.sammobile.com and i dont see a version of 4.1.2 jellybean for my phone.
Will the international versions of 4.1.2 work on my phone?
Will they have bloatware or carrier logos?
When i flash a rom do i have to flash the modem as well?
Can i just flash rom over rom or should i clean the cache first?
Click to expand...
Click to collapse
Its not released yet for every country. I dont find it for sweden either.
And you can expect the same thing from updated rom as the rom you are on now.
The roms from sammobile is only for your country becaus it contains the proper modem and apn info for your country and carrier.
As I said before best way to get a rooted and neat rom is letting the experts in xda compile a version that is flashable through cwm.
Look in the description if modem is included.

[Q]How to updrade from GB to JB XXMC8

i tried to upgrade From GB to JB via ODIN
JB I8160XXMC8 from samsung-updates.com
doesn't contain pit file
the phone bricked it restarts before bootscreen animation
any help plz ?

Master-ZizO said:
i tried to upgrade From GB to JB via ODIN
JB I8160XXMC8 from samsung-updates.com
doesn't contain pit file
the phone bricked it restarts before bootscreen animation
any help plz ?
Click to expand...
Click to collapse
install leaked mb2 and then mc8..

mkel91 said:
install leaked mb2 and then mc8..
Click to expand...
Click to collapse
MB2 or MB4 is it ok ? Or Just MB2 ?

hy,
for installing the new jelly firmware for i8160 please follow next step:
1. flash first firmware jelly bean I8160_OXAMB2, like in this link:
http://www.youtube.com/watch?v=2LZqCD3-Ytk
2. then flash the last firmware jelly bean I8160XXMC8

Thank u all...
problem solved after flashing MB4 or MB2 then Going to MC8

baseband unknow
flashing stopped on "nand write" while flash mb2 or mb4.
if flashing mc8 directly from gb stock rom region hongkong success..
but baseband unknow.
Try flash back to gb stock different region still baseband unknow..
Now i flash gb stock region hk, and back normal again..
How should i do?thank u.

For a moment I thought I wasn't browsing on the ace forums....! Had to check back... Please post on the right forums peeps.
Sent from my GT-Xperia S using xda premium

how to uprgrade i9070 taiwan to jellybean???

hello,, how to upgrade i9070 from taiwan (i9070zlsd1) to jellybean??? because i cant find any JB official frimware for these phone..
i read some tread is danger to cross flashing i9070 from taiwan to other frimware region,,,
thanks for replay

There is NO danger flashing with Odin. But stay AWAY from the China firmware. It caused many phones to be bricked.
DDULP8,XXLQE are very good.
For the steps, refer:
http://forum.xda-developers.com/showthread.php?t=2198341
My Device : Rooted GT-I9070
ROM - 4.1.2 Stock I9070DDULP8
Kernel - CoCore-E-5.0
Recovery - TWRP

harith.unnikrishnan said:
There is NO danger flashing with Odin. But stay AWAY from the China firmware. It caused many phones to be bricked.
DDULP8,XXLQE are very good.
For the steps, refer:
http://forum.xda-developers.com/showthread.php?t=2198341
My Device : Rooted GT-I9070
ROM - 4.1.2 Stock I9070DDULP8
Kernel - CoCore-E-5.0
Recovery - TWRP
Click to expand...
Click to collapse
thanks for replay...
i will try tonight,,, i will post result hope my phone will not bricked....
thanks

l_m_husni said:
thanks for replay...
i will try tonight,,, i will post result hope my phone will not bricked....
thanks
Click to expand...
Click to collapse
you're welcome..... btw u can always press thanks

Old thread, but I had a similar problem. I bought my i9070 in Taiwan and got tired of waiting for my carrier to release the upgrade, so I tried a couple of official Samsung Jellybean firmwares. Sadly, there seems to be a SIM conflict between versions of the phone, as none of the firmwares recognized my SIM card (Taiwanese Fareastone), until I tried the official Hong Kong ROM. Works well so far, had it for a month now. Hope this helps.

[Q] If update official update from different country will baseband change?

Hello guys, i will explain the story in order, sorry for my bad Grammar.
first i have the official GTI9070 but i forgot the baseband (GB)
then i accept software update that appear in notification bar, my baseband become I9070DXLK2 (GB)
and i see there's CM11 out that can make kit kat running in I9070.
but it requires root to install CMW / TWRP..
so hard to find root zip for DXLK2, and then i found one full ROM rooted then flash it with odin.
my baseband still I9070 (GB) but rooted (binary counter++)
after that i flash TWRP with odin too.
then i try flashing CM11 with TWRP.
it success, but no mobile network.
i search at this forum and someone say "no mobile network happen because flashing from GB (2.3.x) directly to KK (4.4.x)"
he said first update from GB to official samsung JB.
the problem, there's no official samsung JB update for my country/region (DXLK2)
my question, if i flash the official samsung JB update from other region.. let say it italy.. will my baseband change?
if it changed, what's the problem and whats the negative impact? what should i do better?
thx in advance.
PS: my device is Samsung Galaxy S Advance GT-I9070 (Indonesian)

amaDetoir said:
my question, if i flash the official samsung JB update from other region.. let say it italy.. will my baseband change?
if it changed, what's the problem and whats the negative impact? what should i do better?
thx in advance.
Click to expand...
Click to collapse
You don't have any negative impact if you flash any stock JB firmware, only with your warranty if you still have one.
Please, follow this guide from point A (JELLYBEANIZATION): [GUIDE] From stock GB to Custom JB (Noob-friendly)
After you updgraded to JB, ask/read some tutorials linked here: [{INDEX of GUIDES/TUTORIALS}] Galaxy S Advance [GT-I9070].
Be sure when you proceed to do something OR ASK before, NOT AFTER you doing something wrong.

R_a_z_v_a_n said:
You don't have any negative impact if you flash any stock JB firmware, only with your warranty if you still have one.
Please, follow this guide from point A (JELLYBEANIZATION): [GUIDE] From stock GB to Custom JB (Noob-friendly)
After you updgraded to JB, ask/read some tutorials linked here: [{INDEX of GUIDES/TUTORIALS}] Galaxy S Advance [GT-I9070].
Be sure when you proceed to do something OR ASK before, NOT AFTER you doing something wrong.
Click to expand...
Click to collapse
thank you for the response.
i'll tell the result later after i can download it, at my office the download link show 404 Not Found (maybe blocked)

Search JB on www.samsung-updates.com.
Powered by CM11

amaDetoir said:
thank you for the response.
i'll tell the result later after i can download it, at my office the download link show 404 Not Found (maybe blocked)
Click to expand...
Click to collapse
Or maybe removed. Try on samsung-updates.com or sammobile.com

In Canada, have XXLK2 (Africa?). Want JB, use UK version?
I bought my unlocked I9070 almost 2 years ago and am thinking about upgrading to Android 4.1.2 (JB).
On samsung-updates there appear to be lots of JB versions for different regions.
Can I just select the one for Britain (XXLQE)? Is there anything I need to check re: compatibility?

coghlan said:
I bought my unlocked I9070 almost 2 years ago and am thinking about upgrading to Android 4.1.2 (JB).
On samsung-updates there appear to be lots of JB versions for different regions.
Can I just select the one for Britain (XXLQE)? Is there anything I need to check re: compatibility?
Click to expand...
Click to collapse
Yes you can flash any stock firmware for I9070. Be sure you don't flash firmware for I9070P.
Powered by CM11 M11 snapshot

Flashing worked...once I found a .zip file
R_a_z_v_a_n said:
Yes you can flash any stock firmware for I9070. Be sure you don't flash firmware for I9070P.
Powered by CM11 M11 snapshot
Click to expand...
Click to collapse
I had a lot of trouble trying to get the samsung-updates.com download to work (used the free one, which either didn't start most of the time or died during download). Eventually, I took the filename (for Britain) and Googled it, and found a download site that let me download it (required 3 hours).
Armed with the .zip file and ODLIN, it worked like a charm. All my installed apps and data survived, which surprised me. I thought this would be a vanilla install.

[Q] can't update via Kies

guys, i need some help. i am from romania, and my Galaxy s advance is running stock 2.3.6, and i want to upgrade it to jelly bean, but in kies , when it connects it says me that i have the latest firmware..... what should i do?
ok...so i managed to flash a firmware with odin, and now its hard bricked i think, i cant do anythink with it, no recovery, no download, no charging... my phone is gt i9070P, and i flashed a I9070 firmware from italy...help pls

Go to service center or try To find somewhere a JTAG. Google it.

thanks man... i will try...it's the only way? it can't be done with a usb jig, and after that , flash a stock firmware?

cj430s said:
.. it can't be done with a usb jig, and after that , flash a stock firmware?
Click to expand...
Click to collapse
Yes it can be. USB JIG is only the way to boot your phone in Download Mode. After that, your only step is to flash thru Odin stock firmware.
Good luck

ok, thanks... i will try...but how can i find a jelly bean firmware for romania? i saw that are for regions,and i dont know wich one to use, i want it to work on orange romania...if you can give me a link or some advice, i just want stock jelly bean unlocked on my I9070P

Search on sammobile/Samsung-updates for I9070P firmwares.

R_a_z_v_a_n said:
Search on sammobile/Samsung-updates for I9070P firmwares.
Click to expand...
Click to collapse
ok , but there i can't find one for romania...wich region should i choose for romania?

cj430s said:
ok , but there i can't find one for romania...wich region should i choose for romania?
Click to expand...
Click to collapse
It should be all good as long as you DO NOT take Hong Kong.
Not sure about P versions but non-P HK versions were reported as messing up - possible bricks.
At 1st everyone who wanted early try used leaked russian JB (before there were official ones for other regions) - it worked pretty much all over the world
Sent from my TF300T using XDA Free mobile app

ok , i will try russian version... after i will get my phone from service, due to that hard brick
anyway, thank you very much for helping me