5,597,762 Members 36,497 Now Online
XDA Developers Android and Mobile Development Forum

*******Upgrading 4.1.1 to 4.2.1 or 4.3********HELP!!

Tip us?
 
team_hob
Old
#1  
Junior Member - OP
Thanks Meter 0
Posts: 8
Join Date: Dec 2013
Default *******Upgrading 4.1.1 to 4.2.1 or 4.3********HELP!!

Hi Guys,

Here is a breakdown of the facts:

I have a SGH-I747 (Canadian version)

I wanted to unlock it so I downgraded and installed 4.1.1 (I747MUMLL1)
After, I realized that the 4.1.1 is outdated and don't like the layout...etc.

Now, I want to go back to 4.2.1 or 4.3.

What are the steps to install 4.2.1 or 4.3 ?
Do I have to root the phone before installing anything?


Any help would be appreciated.

Thanks
 
SaHiLzZ
Old
#2  
Senior Member
Thanks Meter 297
Posts: 1,367
Join Date: Jan 2011
either Odin to 4.3 or check system update in setting

sent from my mobile device
 
rx15901
Old
#3  
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Feb 2014
Default downgrade?

Quote:
Originally Posted by team_hob View Post
Hi Guys,

Here is a breakdown of the facts:

I have a SGH-I747 (Canadian version)

I wanted to unlock it so I downgraded and installed 4.1.1 (I747MUMLL1)
After, I realized that the 4.1.1 is outdated and don't like the layout...etc.

Now, I want to go back to 4.2.1 or 4.3.

What are the steps to install 4.2.1 or 4.3 ?
Do I have to root the phone before installing anything?


Any help would be appreciated.

Thanks
How did you downgrade?
...i've been looking around a a way to unlock on 4.3 but most info is for 4.1.1 and 4.1.2, do you remember how you did it?
 
audit13
Old
(Last edited by audit13; 8th February 2014 at 01:10 PM.)
#4  
audit13's Avatar
Senior Member
Thanks Meter 268
Posts: 1,673
Join Date: Jun 2012
Quote:
Originally Posted by rx15901 View Post
How did you downgrade?
...i've been looking around a a way to unlock on 4.3 but most info is for 4.1.1 and 4.1.2, do you remember how you did it?
You cannot downgrade the bootloader, only the ROM.

It has been theorized that downgrading the ROM to 4.1.1 and keeping the 4.3 bootloader would give you the necessary options to unlock the phone using the free method, but no one has posted the results of doing this.

I couldn't find a ROM matching MUMLL1 but many ROMs are located here: http://www.sammobile.com/firmwares/1...e=BMC#firmware
 
team_hob
Old
#5  
Junior Member - OP
Thanks Meter 0
Posts: 8
Join Date: Dec 2013
Quote:
Originally Posted by SaHiLzZ View Post
either Odin to 4.3 or check system update in setting

sent from my mobile device
Do you where I can download 4.3? Does it matter on the cellphone provider?

System update doesn't work...its say's system is up-to-date.
 
audit13
Old
#6  
audit13's Avatar
Senior Member
Thanks Meter 268
Posts: 1,673
Join Date: Jun 2012
Quote:
Originally Posted by team_hob View Post
Do you where I can download 4.3? Does it matter on the cellphone provider?

System update doesn't work...its say's system is up-to-date.
Look on samfirmware.com for stock ROMs for your carrier. The firmware must be flashed via desktop Odin.
 
Larry2999
Old
#7  
Senior Member
Thanks Meter 34
Posts: 185
Join Date: Feb 2014
Location: Atlanta, GA
Quote:
Originally Posted by audit13 View Post
You cannot downgrade the bootloader, only the ROM.

It has been theorized that downgrading the ROM to 4.1.1 and keeping the 4.3 bootloader would give you the necessary options to unlock the phone using the free method, but no one has posted the results of doing this.

I couldn't find a ROM matching MUMLL1 but many ROMs are located here: http://www.sammobile.com/firmwares/1...e=BMC#firmware
I read in one of these threads that flashing via Mobile Odin, rather than desktop Odin, will flash the ROM but not the bootloader. Can anyone confirm if it is possible to safely downgrade from 4.3 to 4.1.1 via this method?
 
team_hob
Old
#8  
Junior Member - OP
Thanks Meter 0
Posts: 8
Join Date: Dec 2013
Quote:
Originally Posted by audit13 View Post
Look on samfirmware.com for stock ROMs for your carrier. The firmware must be flashed via desktop Odin.
I have downloaded lastest firmware for Telus from Sammobile.

Should I just use odin and install the new firmware? Do I need to do something to the ROM before I install the firmware? I'm a newbie to flashing so all the help would be help.

Thanks
 
audit13
Old
#9  
audit13's Avatar
Senior Member
Thanks Meter 268
Posts: 1,673
Join Date: Jun 2012
Quote:
Originally Posted by team_hob View Post
I have downloaded lastest firmware for Telus from Sammobile.

Should I just use odin and install the new firmware? Do I need to do something to the ROM before I install the firmware? I'm a newbie to flashing so all the help would be help.

Thanks
If you are using an i747m, you can use Odin to flash the firmware.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes