Fight the Heat and Conserve Battery with EaseUS Coolphone

Memory hungry Android applications are often responsible for making our device … more

Battery Charged in 30 Seconds? Maybe in 2016

Phones and tablets are getting more and more power hungry with each passing generation. Their … more

ZArchive Manages Your File Archives

Today smartphones are quite powerful devices that can handle multiple processes at once. In fact, some of … more

Regain Double Tap to Wake Functionality on the Nexus 6

A few months ago, Google announced its newest flagship device, the Nexus 6, alongside … more

Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

[Q] downgrade i747 from 4.3 to 4.2.1

OP tmpro

24th February 2014, 03:23 PM   |  #1  
OP Junior Member
Thanks Meter: 0
 
19 posts
Join Date:Joined: Sep 2012
How do I downgrade my S3 i747 from 4.3 to 4.2.1?
24th February 2014, 03:31 PM   |  #2  
audit13's Avatar
Senior Member
Toronto
Thanks Meter: 865
 
3,023 posts
Join Date:Joined: Jun 2012
More
Quote:
Originally Posted by tmpro

How do I downgrade my S3 i747 from 4.3 to 4.2.1?

If your phone is running a stock 4.3 bootloader, you cannot downgrade the bootloader, only the OS.
24th February 2014, 04:56 PM   |  #3  
OP Junior Member
Thanks Meter: 0
 
19 posts
Join Date:Joined: Sep 2012
Quote:
Originally Posted by audit13

If your phone is running a stock 4.3 bootloader, you cannot downgrade the bootloader, only the OS.

Do i need to downgrade my bootloader to downgrade to 4.2.1? All I want to do is revert back to 4.2.1 OS.
24th February 2014, 05:11 PM   |  #4  
audit13's Avatar
Senior Member
Toronto
Thanks Meter: 865
 
3,023 posts
Join Date:Joined: Jun 2012
More
Do you have access to the stock AT&T 4.2.1 ROM? I looked on sammobile and couldn't find it.

You may be able to downgrade to 4.2.1 using mobile Odin but you would need root access on your current ROM.

Do you have knox on your phone? If you do, knox may interfere with obtaining root. Also, tripping the Knox counter will void any warranty left on your phone.
24th February 2014, 05:21 PM   |  #5  
OP Junior Member
Thanks Meter: 0
 
19 posts
Join Date:Joined: Sep 2012
Quote:
Originally Posted by audit13

Do you have access to the stock AT&T 4.2.1 ROM? I looked on sammobile and couldn't find it.

You may be able to downgrade to 4.2.1 using mobile Odin but you would need root access on your current ROM.

Do you have knox on your phone? If you do, knox may interfere with obtaining root. Also, tripping the Knox counter will void any warranty left on your phone.

No i do not have access to 4.2.1 ROM that why i was asking here to see what i could do. I thought with Odin you could flash stock firmware with out being rooted. No i do not have Knox on my phone.
24th February 2014, 06:52 PM   |  #6  
audit13's Avatar
Senior Member
Toronto
Thanks Meter: 865
 
3,023 posts
Join Date:Joined: Jun 2012
More
Quote:
Originally Posted by tmpro

No i do not have access to 4.2.1 ROM that why i was asking here to see what i could do. I thought with Odin you could flash stock firmware with out being rooted. No i do not have Knox on my phone.

You don not need to be rooted to flash with Odin but you need a ROM that can be flashed via Odin. Unless AT&T released full a 4.2.1 ROM, it's unlikely you will find one on the Internet.

If you try to flash a stock ROM using desktop Odin that includes an older bootloader, you will probably brick your phone.
Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes