[Q] Galaxy S3 4.1.2 XXELLA HELP! - Galaxy S III Q&A, Help & Troubleshooting

Hi guys, Im a newbie here. But i always visited xda forum for information. But the question i wanted to ask wasnt into any thread. Or i was unable to find.
My Question is: I have a stock latest 4.1.2 XXELLA ROM in my Galaxy S III, But it is Creating some issues not major but Battery is draining far more quickly than old 4.1.1. So now i wanna flash back old 4.1.1 into my SGS3. But i m aware of it that Samsung did change their bootloader in this update. Will it be safe to flash back old 4.1.1 keeping this bootloader?? Or what? Should i have to flash old bootloader aswell? (The one from 4.1.1)?? Or I Just have to simply flash back old stock 4.1.1 ROM in my SGS 3 via Odin? Thanks
Quick help required

Noob-superuser said:
Hi guys, Im a newbie here. But i always visited xda forum for information. But the question i wanted to ask wasnt into any thread. Or i was unable to find.
My Question is: I have a stock latest 4.1.2 XXELLA ROM in my Galaxy S III, But it is Creating some issues not major but Battery is draining far more quickly than old 4.1.1. So now i wanna flash back old 4.1.1 into my SGS3. But i m aware of it that Samsung did change their bootloader in this update. Will it be safe to flash back old 4.1.1 keeping this bootloader?? Or what? Should i have to flash old bootloader aswell? (The one from 4.1.1)?? Or I Just have to simply flash back old stock 4.1.1 ROM in my SGS 3 via Odin? Thanks
Quick help required
Click to expand...
Click to collapse
I went bak and forth btween 4.1.1 and 4.1.2 with no problem....but remember when u downgrade by flashng stock rom u wont b able to boot until u go to recovery, wipe cache nd restore device from there...

russeini said:
I went bak and forth btween 4.1.1 and 4.1.2 with no problem....but remember when u downgrade by flashng stock rom u wont b able to boot until u go to recovery, wipe cache nd restore device from there...
Click to expand...
Click to collapse
+1 thanks, I was stuck at the boot logo & was gone mad, Then read yewr comment now its all oki here

Related

[Q] Galaxy SII Original Android Unlocked (Noob Question)

Hey bros - you guys have helped me a lot, and this will be my final galaxy S2 question as I am selling my phone (http://www.ebay.co.uk/itm/281021279081?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649). It's currently running CM9 RC, and i want to flash it back to a stock 4.0.4 ROM and Radio. So does anyone know where I can find a stock ROM and radio and does anyone know what an Unlocked UK International i9100 would be running?
Also, if i flash a stock rom and radio, will the next owner be able to update his phone via KIES? Can anyone help me restore this phone back to normal?
Thanks guys - see you guys on the nexus 4 forum soon!
*Just realised that this should be in Q/A. Now do I move it?*
Question, wouldn't a factory reset put everything back to what came out of the box?
Sent from my Samsung GT-i9100M
ROM Dilidroid UHLPS
Kernel Siyah 4.15
jebuchanan said:
Question, wouldn't a factory reset put everything back to what came out of the box?
Sent from my Samsung GT-i9100M
ROM Dilidroid UHLPS
Kernel Siyah 4.15
Click to expand...
Click to collapse
Unfortunately not, a factory reset just wipes the /data partition, which would remove all my data but still leave the ROM. What I *think* I have to do is to flash stock, and then flash the stock radio, and pray that the new owner of the phone can flash the official Jelly Bean thru KIES when it comes out.... can you shed some light on this?

[Q] S3 4.2.1 leaked downgrade to 4.2.1???/

Hi All
I downloaded and flashed the leaked 4.2.1 jelly bean (odin flashable) rom and flashed it on my S3. I want to downgrade to I9300XXEMB1 4.1.2. How do i do that? I flashed the 4.1.2 rom but when it reboots it just go into a bootloop, rebooting to the samsung logo every time. Then i had to flash it back to 4.2.1 rom. The new rom also dos not have developer options in settings. Please Help i want 4.1.2 back. ps my phone is not rooted.
Thanx
If you want to go completely stock
Run triangle away
Flash Rom with Odin
Factory reset
It should then boot after the reset, you will lose your data and sd card content doing this
---------- Post added at 07:47 AM ---------- Previous post was at 07:45 AM ----------
Btw.....to get dev options on 4.2.x go to settings/about phone. Tap build number 7 times and dev options will appear in setting/
Hi Thanx very much.
Is triangle away an app, i will get it and run it, the flash 4.1.2 with odin and then factory reset. Thanx
Hi thanx allot, but i see to use triangle away the S3 must be rooted. My phone is not rooted.
your thread title misleading people =_=
Sorry, dont know how else to put it. just want to downgrade my S3 with leaked stock jellybean 4.2.1, from samfirmware to stock jellybean4.1.2. Ps my phone is not rooted.
Thanx
ruddag said:
Sorry, dont know how else to put it. just want to downgrade my S3 with leaked stock jellybean 4.2.1, from samfirmware to stock jellybean4.1.2. Ps my phone is not rooted.
Thanx
Click to expand...
Click to collapse
Just do as I said, but your flash counter(alerts warranty claims that you have flashed custom/leak firmware) will remain at 1 so your warranty may well be voided.
I if you want to circumvent that you need to root, then proceed as I instructed
ruddag said:
Hi All
I downloaded and flashed the leaked 4.2.1 jelly bean (odin flashable) rom and flashed it on my S3. I want to downgrade to I9300XXEMB1 4.1.2. How do i do that? I flashed the 4.1.2 rom but when it reboots it just go into a bootloop, rebooting to the samsung logo every time. Then i had to flash it back to 4.2.1 rom. The new rom also dos not have developer options in settings. Please Help i want 4.1.2 back. ps my phone is not rooted.
Thanx
Click to expand...
Click to collapse
when you flashed back to 4.1.2 did you try going into recovery and wiping data and cache? if not that should help
Hi Yes got it right. In odin do not tick reboot. Then after flash go into recovery mode and wipe data and cache. Thanx

HELP ME PLEASE! Downgrade SGS3 JB 4.3(Ireland) to stock 4.1.2 :(((( NEED IT SO BAD!

Guys. please hel me. I'm noob in android and I'm new in XDA.I updated my Samsung Galaxy Siii GT-I9300 to a leaked version of JB4.3(Ireland) and I regret it. It eats up my battery so fast and it has some bugs including the music player when locked. I want to restore it to the Stock JB 4.1.2. But I've read some threads that downgrading will cause errors on IMEI/EFS thing ( I badly want to downgrade it and wait for the official release of the Firmware. Please HELP ME GUYSS!
First of all, is your device rooted?
vhngu930 said:
First of all, is your device rooted?
Click to expand...
Click to collapse
Nope. My GT-I9300 is not rooted. I flashed the leaked version of JB through Odin 3.09. it drains my battery. Huhu
noobdroiduser said:
Nope. My GT-I9300 is not rooted. I flashed the leaked version of JB through Odin 3.09. it drains my battery. Huhu
Click to expand...
Click to collapse
Flash the stock ROM through odin
vhngu930 said:
Flash the stock ROM through odin
Click to expand...
Click to collapse
Huhu. But the other threads states that downgrading will cause a problem with my Imei. And leads to no network thing. is there any other way? Or an specific ROM that wont cause that problem? Thanks for lending your time.
noobdroiduser said:
Huhu. But the other threads states that downgrading will cause a problem with my Imei. And leads to no network thing. is there any other way? Or an specific ROM that wont cause that problem? Thanks for lending your time.
Click to expand...
Click to collapse
I did have a GT-9300 and i could not remember how many times i flash up and down stock roms by ODIN and there was no error at all?
4.3 sucks bad...
Yes After downgrading to 4.1.2 My S3 (GT-I9300) does not show any Network. It is just a Emergency Call Only phone now.. Though after coming back to 4.3 again it works fine. I am also pissed off with this stupid update by Samsung. Please help if any buddy can...
Is it the official one from the Samsung website?
just downgrade it to 4.1.2 and flash a 4.1.2 modem, it will surely work.
Downgrade SGS3 4.3 to 4.1.2
I had similar issue upgraded to UK Stock 4.3 from Samfirmware ad had a terrible experience. I came across this 4.1.2 stock rom for Germany that worked with no issues as this one has MG4 modem that reads EFS2 partition newly implemented by Samsung,
Product Code: MBC
PDA: I9300XXEMG4
CSC: I9300MBCEMH1
MODEM: I9300XXEMG4
simply flash it through ODIN
http://www.hotfile.com/dl/250954845/08fe425/I9300XXEMG4_I9300MBCEMH1_MBC.zip.html
If your S3 doesn't reboot on its own, enter Recovery Mode by pressing Volume Up + Power + Home button simultaneously and then performing a Data Wipe/Factory Reset and wipe any cache partition. Then select Reboot System Now and you should be good to go.
Hope your problem will also solved as mine. Click Thanks if it works

[Q] downgrade to 4.1.2 stock?

Hello guys actully i would like to ask that i have galaxy s3 i9300 recently i update it with 4.3 jb rom but in this rom loads of bugs some time when i turn off screen then bck it on its takes ,2 ,3 secounds to onn nowi want downgrade it to 4.1.2 jb stock rom i hve read on sites mostly had downgrade it they all mentioned that after downgrade it say no registerd on network please help me out what should i do i want go bck old 4.1.2 rom cos i recently month ago bought s3 brand new dont wana brick it myself thnx ?
Rash732 said:
Hello guys actully i would like to ask that i have galaxy s3 i9300 recently i update it with 4.3 jb rom but in this rom loads of bugs some time when i turn off screen then bck it on its takes ,2 ,3 secounds to onn nowi want downgrade it to 4.1.2 jb stock rom i hve read on sites mostly had downgrade it they all mentioned that after downgrade it say no registerd on network please help me out what should i do i want go bck old 4.1.2 rom cos i recently month ago bought s3 brand new dont wana brick it myself thnx ?
Click to expand...
Click to collapse
Wrong Section!!
But you can downgrade to XXEMG4.
Rash732 said:
Hello guys actully i would like to ask that i have galaxy s3 i9300 recently i update it with 4.3 jb rom but in this rom loads of bugs some time when i turn off screen then bck it on its takes ,2 ,3 secounds to onn nowi want downgrade it to 4.1.2 jb stock rom i hve read on sites mostly had downgrade it they all mentioned that after downgrade it say no registerd on network please help me out what should i do i want go bck old 4.1.2 rom cos i recently month ago bought s3 brand new dont wana brick it myself thnx ?
Click to expand...
Click to collapse
One you are posting in the wrong forum.
Two you need to read the 4.3 threads and read the faqs and guided before asking repetitive questions .
help me out
HtcDesire2 said:
Wrong Section!!
But you can downgrade to XXEMG4.
Click to expand...
Click to collapse
plz help me how can i do acttualy i dont realy knw where should i send my question worried about my s3 ?
Rash732 said:
plz help me how can i do acttualy i dont realy knw where should i send my question worried about my s3 ?
Click to expand...
Click to collapse
Download XXEMG4 firmware from sammobile and flash it using ODIN (Same way you did for 4.3)
Did you do a nandroid bk up? Restore that? When you flashed 4.3 it's changes efs. So to fix network simply flash mg4 or newer modem. I use mj3 modem that comes with 4.3 mg9 firmware.
Please refer and use help threads which have already been made on these topics.
Moved to Q&A.
h
andrewwright said:
Did you do a nandroid bk up? Restore that? When you flashed 4.3 it's changes efs. So to fix network simply flash mg4 or newer modem. I use mj3 modem that comes with 4.3 mg9 firmware.
Click to expand...
Click to collapse
i just simply went settings about phone in software update and took update from thr then install i dont flash it via odin ?
hlp
a.cid said:
Please refer and use help threads which have already been made on these topics.
Moved to Q&A.
Click to expand...
Click to collapse
where from i can download that modem file and how to install it ?
No actually I took the updates from about phone software updates I don't use odin etc so I don't back up etc
Now what should I do for downgrade ?????
Sent from my GT-I9300 using xda app-developers app

Downgrading from 4.3 to 4.2.1 and the No Network Issue...

Hello guys....
I am very thankful to the xda forum and all the members who helped me to get through a serious problem..
Recently I installed 4.3 Leaked version on my GT-I9300 and the ROM proved to be worst ROM of life. So I decided to go back to 4.1.2.
I installed the Stock ROM via Odin but I confronted a serious issue, when I was finished the installation I found that there was no network at all... Samsung's official told me that it is impossible to reverse the Android version...
I had no clue what to do. I flashed many ROMs but no solution at all. My IMIE was also kinda jumbled..
Many guys said it is EFS issue... But it is not EFS issue...
It is all because of different Modem issue.. all you need to do is just install a clean Stock ROM from http://www.sammobile.com/firmwares/2/ and Install the patched modem... you are done..
So here is the solution:
1. Download your desired Stock ROM for your Country from Sammobile...
Link http://www.sammobile.com/firmwares/2/
2. Install the ROM via Odin
3. Root it and Install your favorite recovery.
4. Install the Patched MG4 Modem Zip in Recovery Mode. Link https://www.dropbox.com/s/geispctijpxqjms/Patched_Modem_I9300XXEMG4.zip
You are done....
This problem is all about MODEM version, so I don't think if EFS tricks are involved here.....
Finally credits go to all the XDA Members who put their heart and soul to present all the required guidance for me to be able to downgrade to lower Android Version.. I have only compiled the whole stuff into a single thread....
Thanks,,,
Custom rom from sammobile ???????since when have sam made custom roms .
STOCK ROM yes .
The Downgrading from 4.3 to 4.2.1 and the No Network Issue...
Is well posted in the faqs and guides for those that actually read them .
Sadly most are to lazy /
Sorry for the Wrong Term...
JJEgan said:
Custom rom from sammobile ???????since when have sam made custom roms .
STOCK ROM yes .
The Downgrading from 4.3 to 4.2.1 and the No Network Issue...
Is well posted in the faqs and guides for those that actually read them .
Sadly most are to lazy /
Click to expand...
Click to collapse
Sorry I wrote that mistakenly...... My bad...
Thanks for the guide you save me from a lot of work :good::good:
hugs
First time flashing a Samsung device, are there any risks involved in the above process i.e. wrong country and secondly, @featherknox why is a custom recovery required, is there no way to flash a stock rom straight over another stock rom with out it?
featherknox said:
Hello guys....
I am very thankful to the xda forum and all the members who helped me to get through a serious problem..
Recently I installed 4.3 Leaked version on my GT-I9300 and the ROM proved to be worst ROM of life. So I decided to go back to 4.1.2.
I installed the Stock ROM via Odin but I confronted a serious issue, when I was finished the installation I found that there was no network at all... Samsung's official told me that it is impossible to reverse the Android version...
I had no clue what to do. I flashed many ROMs but no solution at all. My IMIE was also kinda jumbled..
Many guys said it is EFS issue... But it is not EFS issue...
It is all because of different Modem issue.. all you need to do is just install a clean Stock ROM from http://www.sammobile.com/firmwares/2/ and Install the patched modem... you are done..
So here is the solution:
1. Download your desired Stock ROM for your Country from Sammobile...
Link http://www.sammobile.com/firmwares/2/
2. Install the ROM via Odin
3. Root it and Install your favorite recovery.
4. Install the Patched MG4 Modem Zip in Recovery Mode. Link https://www.dropbox.com/s/geispctijpxqjms/Patched_Modem_I9300XXEMG4.zip
You are done....
This problem is all about MODEM version, so I don't think if EFS tricks are involved here.....
Finally credits go to all the XDA Members who put their heart and soul to present all the required guidance for me to be able to downgrade to lower Android Version.. I have only compiled the whole stuff into a single thread....
Thanks,,,
Click to expand...
Click to collapse
I can confirm that this method works. XEMB5 (4.1.2 stock rom) on top of the crappy 4.3 update, rooted it and then installed CWM. flashed the patch modem from the link he gave and the XEMB5 rom is working with network running again. but it seems like the battery is awful, 95% in just 10 minutes? lost 5 percent for that short amount of time -_-
then again, thanks for this!
Battery Drain
thehavoc said:
I can confirm that this method works. XEMB5 (4.1.2 stock rom) on top of the crappy 4.3 update, rooted it and then installed CWM. flashed the patch modem from the link he gave and the XEMB5 rom is working with network running again. but it seems like the battery is awful, 95% in just 10 minutes? lost 5 percent for that short amount of time -_-
then again, thanks for this!
Click to expand...
Click to collapse
Yes after flashing this modem the battery drains so quickly..
I am looking for any solution. Hopefully any developer would come with a good solution.
In battery system I see The Android System draining almost 25 to 30 percent of battery
I had the same issue, but with the help of xda , now everythings normal. but i have a question, with no oficial advances from samsung can i go back to flashing with no danger ?
thx , sorry for my english
Josemonteiro90 said:
I had the same issue, but with the help of xda , now everythings normal. but i have a question, with no oficial advances from samsung can i go back to flashing with no danger ?
thx , sorry for my english
Click to expand...
Click to collapse
My problem is little different. I can flash any ROM via Odin[DO NOT FORGET TO CHARGE YOUR MOBILE ABOVE 80% battery level!]:
1. Goto recovery by pressing "vo upl+home+power" release when you Samsung's bootloader.
2. Do factory reset/wipe everything.
3. Remove battery for 10secs. Then put it back.
4. Now press "vol down+home+power" to bring it into download mode. Then follow odin flashing procedure. It will work for any Samsung rom. No need to intall any custum roms.
Now going to my problems:
A. My s3 shuts down when it's idle.
B. Bluetooth button does not work. It tries to go to ON position but goes back OFF after 2/3 sec.
After downgrading from earlier 4.3 [SWC] I have even upgraded it with latest 4.1.2 xxemh4 but no luck!
Every thing works network, wi-fi etc. except above two problems!
Help me please!!
I FOUND SOMETHING, WHEN I DO *#1234* IT SAYS CSC: UNKNOWN though my network is ok and wi-fi works fine. Lemme try patching CSC as featherknox suggested!
@featherknox, But your patched modem can not be flashed in recovery[stock] mode as it says "Signature verification failed". HELP ME WHAT I SHOULD DO?
problem after flashing rom
why when i flashing that rom to downgrade from 4.3 to 4.2.1(ROM from sammobile) it stuck at samsung logo and always repeat the samsung logo. help me please. thanks
wannn97 said:
why when i flashing that rom to downgrade from 4.3 to 4.2.1(ROM from sammobile) it stuck at samsung logo and always repeat the samsung logo. help me please. thanks
Click to expand...
Click to collapse
first of all 4.2.1 or 4.1.2 ?
secondly have you wiped data/cache/dalvik cache and format system ?
Third did you try flashing any other supported kernels for your current android version ?
Galaxy S3 Updating causes Emergency Calls Only
Hi People i want to share my problem here which im facing from many days , I have updated My Galaxy S3 from Android 4.0 ICS to Offical Android 4.1.2 Jelly Bean for my country which i have downloaded from Sammobile via Odin After updating my phone im facing Emergency Calls only problem and also lost my IMEI which changed like 0049 i have searched many time on google nut cannot find a perfect solution for it plz any one help me it will be appriciatiable Thanx
Go read the efs thread in general forum, stickies.
Sent from my GT-I9300 using Tapatalk
Unknown baseband and null IMEI on samsung gs3 (I9300) after downgrading from 4.3
Dear All, pls give me a solution for my problem.
i have intl version of GS3 (I9300), recently i have updated my GS3 to 4.3 via ODIN then i have rooted my mobile to install slimbean rom. all was well until yesterday. but i decided to go back to 4.1.2 and flashed official ROM with baseband (MG4). from then onwards my mobile is showing sim not found, unknown baseband and null imei.
can anyone help me in solving this problem. thousand thanks in advance.
rajugsg2702 said:
Dear All, pls give me a solution for my problem.
i have intl version of GS3 (I9300), recently i have updated my GS3 to 4.3 via ODIN then i have rooted my mobile to install slimbean rom. all was well until yesterday. but i decided to go back to 4.1.2 and flashed official ROM with baseband (MG4). from then onwards my mobile is showing sim not found, unknown baseband and null imei.
can anyone help me in solving this problem. thousand thanks in advance.
Click to expand...
Click to collapse
Read my signature for your answer.
Sent from my GT-I9300 using Tapatalk
i will test this tuto, because i have the same problem , the generic imei 0049 etc.. i dont have the efs backup , i hope this make my s3 funcional
sorry for my ingles!
Edit
Not working for me.... any ideas?
boomboomer said:
Read my signature for your answer.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
i am still waiting for solution to my problem. can anyone answer pls.
regards
rajugsg2702 said:
i am still waiting for solution to my problem. can anyone answer pls.
regards
Click to expand...
Click to collapse
Have You tried this solution by featherknox ??????
1. Download your desired Stock ROM for your Country from Sammobile...
Link http://www.sammobile.com/firmwares/2/
2. Install the ROM via Odin
3. Root it and Install your favorite recovery.
4. Install the Patched MG4 Modem Zip in Recovery Mode. Link https://www.dropbox.com/s/geispctijp...9300XXEMG4.zip
You are done....
plz try this again and tell me if this works...
Muhammad Ameen said:
Have You tried this solution by featherknox ??????
1. Download your desired Stock ROM for your Country from Sammobile...
2. Install the ROM via Odin
3. Root it and Install your favorite recovery.
4. Install the Patched MG4 Modem Zip in Recovery Mode.
You are done....
plz try this again and tell me if this works...
Click to expand...
Click to collapse
it didnt work for me. i did the sameway as u have mentioned, i have even read featherknox posts in this forum but failed to bring back baseband version. pls suggest me what next
rajugsg2702 said:
it didnt work for me. i did the sameway as u have mentioned, i have even read featherknox posts in this forum but failed to bring back baseband version. pls suggest me what next
Click to expand...
Click to collapse
Read the faqs and guides or take to a service centre .

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