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] Galaxy S3, Android 4.04 ICS

OP andyb1712

24th March 2014, 10:01 AM   |  #1  
OP Junior Member
Flag Fareham
Thanks Meter: 0
 
6 posts
Join Date:Joined: Mar 2014
More
I recently tried to downgrade my Galaxy S3 from Jelly Bean 4.1.2 to ICS 4.04 using Odin and a ROM file downloaded from Sammobile.

The installation was succesful and after doing a factory reset and clearing cache the phone booted up ok. It connected to my network provider for several seconds and then disconnected.

After several attempts at this process using different files, I noticed that the IMEI of my phone was no longer correct. At this point I thought I had bricked my phone by somehow corrupting the IMEI.

In an attempt to put it right, I reloaded Jelly Bean 4.1.2 and my phone now works fine again. Please can someone advise what I am doing wrong with this process and why the IMEI gets corrupted as this is obviously why the network rejects my phone when I install ICS.
24th March 2014, 10:14 AM   |  #2  
Andr3y29's Avatar
Senior Member
Flag Buzau
Thanks Meter: 151
 
401 posts
Join Date:Joined: Jan 2013
More
If you would look here: http://forum.xda-developers.com/gala...ction-t1740061 you will found this link for ICS ROMs: https://www.wuala.com/UpInTheAir/SGS...y=n0KVwtIMZPE8 . From here, select CWM folder if you want to flash the modem via recovery, or the Odin one if you want to flash it with Odin. Choone one of the file, download it, and then flash it via the method you want.
QuickQuestion: Why would you wanna use ICS when it has been released 4.3 for our device, and 4.4 it is said to be released in the following weeks (Hope so! ). If you want, you can answer, if not, it'ss not a big problem
24th March 2014, 11:15 AM   |  #3  
OP Junior Member
Flag Fareham
Thanks Meter: 0
 
6 posts
Join Date:Joined: Mar 2014
More
Thanks for the reply. Is this the reason my IMEI is corrupted when I flash a PDA from Sammobile? I am new to using Odin etc and followed the instructions on the website.

There are some features I liked in ICS that were removed in Jelly Bean, such as direct access to words in the custom dictionary and the 3 x 4 keypad that was removed in 4.3. I already downgraded from 4.3 to 4.1.2 but wanted to try ICS 4.04. So far I can install it but cannot get a network connection for more than a few seconds.

#EDIT: After further research this problem appears to be an issue with the phone's EFS data. I have now used EFS Professional to back up this important area. What I don't know is can I restore this backed up EFS data to correct the problem I'm having when I downgrade Jelly Bean 4.1.2 to ICS 4.04?
Last edited by andyb1712; 24th March 2014 at 01:58 PM. Reason: New info found
24th March 2014, 03:58 PM   |  #4  
Senior Member
Thanks Meter: 15
 
147 posts
Join Date:Joined: Jan 2012
Quote:
Originally Posted by andyb1712

Thanks for the reply. Is this the reason my IMEI is corrupted when I flash a PDA from Sammobile? I am new to using Odin etc and followed the instructions on the website.

There are some features I liked in ICS that were removed in Jelly Bean, such as direct access to words in the custom dictionary and the 3 x 4 keypad that was removed in 4.3. I already downgraded from 4.3 to 4.1.2 but wanted to try ICS 4.04. So far I can install it but cannot get a network connection for more than a few seconds.

#EDIT: After further research this problem appears to be an issue with the phone's EFS data. I have now used EFS Professional to back up this important area. What I don't know is can I restore this backed up EFS data to correct the problem I'm having when I downgrade Jelly Bean 4.1.2 to ICS 4.04?

If you have a 16GB s3, u might want to keep JB, 16GB ICS S3 has the possibility for sudden death. But, i too am considering going back to ICS, Jellybean is a joke, it lags way more than ICS does. Trying to force the system to constantly render at 60FPS is hardware demanding and was probably a temporary approach. Its unfortunate that ICS ROMS are no longer available for download. Also, i doubt kitkat would be released for our phone.
24th March 2014, 04:16 PM   |  #5  
OP Junior Member
Flag Fareham
Thanks Meter: 0
 
6 posts
Join Date:Joined: Mar 2014
More
My S3 is 16Gb and was originally shipped with Jelly Bean. I watched a Youtube video comparing ICS and Jelly Bean and ICS was faster responding in virtually every test, despite the guy doing it being pro Jelly Bean.

I don't know much about the 'sudden death' problem with ICS on 16Gb models but from what little I've read, I thought this was more of a hardware issue due to defective memory chips and/or main boards?

My S3 updated to Jelly Bean 4.3 last December and I wasn't happy because they had removed the 3x4 Samsung keypad that I like to use. I tried a number of different keypads from Play Store but in the end decided to downgrade to 4.1.2, which went without a hitch.

My attempts to do the same with ICS 4.04 did not go so well and I'm still not sure why the IMEI was corrupted or even more surprising, that it was corrected when I re flashed 4.1.2
24th March 2014, 09:27 PM   |  #6  
Senior Member
Thanks Meter: 15
 
147 posts
Join Date:Joined: Jan 2012
Quote:
Originally Posted by andyb1712

My S3 is 16Gb and was originally shipped with Jelly Bean. I watched a Youtube video comparing ICS and Jelly Bean and ICS was faster responding in virtually every test, despite the guy doing it being pro Jelly Bean.

I don't know much about the 'sudden death' problem with ICS on 16Gb models but from what little I've read, I thought this was more of a hardware issue due to defective memory chips and/or main boards?

My S3 updated to Jelly Bean 4.3 last December and I wasn't happy because they had removed the 3x4 Samsung keypad that I like to use. I tried a number of different keypads from Play Store but in the end decided to downgrade to 4.1.2, which went without a hitch.

My attempts to do the same with ICS 4.04 did not go so well and I'm still not sure why the IMEI was corrupted or even more surprising, that it was corrected when I re flashed 4.1.2

Not sure exactly how the sudden death works, i just know it affects 16GB s3 variants. I know the video you are referring to, i watched the exact same one. I think most people got caught up in the hype of JB and forgot how good ICS was.
25th March 2014, 08:44 AM   |  #7  
OP Junior Member
Flag Fareham
Thanks Meter: 0
 
6 posts
Join Date:Joined: Mar 2014
More
Quote:
Originally Posted by Havoc-X

Not sure exactly how the sudden death works, i just know it affects 16GB s3 variants. I know the video you are referring to, i watched the exact same one. I think most people got caught up in the hype of JB and forgot how good ICS was.

The Youtube video made me laugh as it was supposed to encourage you to want the Jelly Bean upgrade, when all it did was make me want to run ICS even more! I tried a friend's Galaxy S2 with ICS the other day and it was smoother and faster responding than my S3.

I hope to have another go at getting it working but also I am concerned I probably came close to bricking my handset last time because I do not know enough about the process. This wouldn't be good as I still have another year on my network contract to go.
25th March 2014, 11:30 AM   |  #8  
Member
Flag Pattoki
Thanks Meter: 4
 
74 posts
Join Date:Joined: Jan 2014
More
Do post here if you succeed in downgrading to 4.0.4 as I am also looking for it but it's not working
And best of luck
25th March 2014, 11:45 AM   |  #9  
boomboomer's Avatar
Senior Member
Thanks Meter: 754
 
3,434 posts
Join Date:Joined: Jun 2010
Unless you have a backup of your efs folder, from before firmware EMG4 then you cannot downgrade.

EFS format was changed at EMG4 to v2, earlier roms are incompatible with v2 and later roms incompatible with v1 so IMEI will be corrupt.



Sent from my GT-I9300 using Tapatalk
The Following User Says Thank You to boomboomer For This Useful Post: [ View ]
25th March 2014, 04:13 PM   |  #10  
OP Junior Member
Flag Fareham
Thanks Meter: 0
 
6 posts
Join Date:Joined: Mar 2014
More
Thanks for the info.

My S3 was shipped with EMG4, so unfortunately I don't have any efs data that I can use with earlier ICS firmwares. I was trying in vain to load BLG8 but it just resulted in a corrupted IMEI and no network.

Unless there is some way of converting saved v2 efs data to the earlier format, then I will have to stick with the Android version I have.

Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes