Downgrade android version? - T-Mobile, Samsung Galaxy SIII

Hello there.
I'm hoping someone will help me. I'm trying to downgrade the android version on my T999 from 4.1.2 To 4.1.1 please help.
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If you never did the 4.3 official update then you can just Odin to 4.1.1, or if you have custom recovery you can flash a 4.1.1 ROM as well.. Pretty sure there's threads on this subject
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serio22 said:
If you never did the 4.3 official update then you can just Odin to 4.1.1, or if you have custom recovery you can flash a 4.1.1 ROM as well.. Pretty sure there's threads on this subject
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I'm on 4.1.2, I'm unrooted. Which file should I download and flash to be stock 4.1.1?
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4.1.1 LJA firmware and flash in Odin
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serio22 said:
4.1.1 LJA firmware and flash in Odin
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Can I flash even if I'm not rooted?
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gibrannz said:
Can I flash even if I'm not rooted?
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AFAIK yes

gibrannz said:
Can I flash even if I'm not rooted?
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Yup
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serio22 said:
Yup
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Got it. Thank you.
fz8975 said:
AFAIK yes
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Related

Help for root leaked 4.3

Hello everyone
I wanna root my note running leaked version 4.3
What is the easiest way to root it ?
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romano_ezzat said:
Hello everyone
I wanna root my note running leaked version 4.3
What is the easiest way to root it ?
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Click to expand...
Click to collapse
Haven't read anything?
Try the toolkit! It's very easy to use and you just can follow its lead while flashing via odin etc.
Can I flash any tar file via odin
I think it easy for me
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Flash philz recovery tar file using odin and flash supersu1.65.zip through philz recovery.
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Thanks
I think this easy
But where is the link ?
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romano_ezzat said:
Thanks
I think this easy
But where is the link ?
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use search button its very easy

Flash i9505 4.3

How do I flash a 4.3 ROM made for the i9505....do I just flash it or do I have to do something special beforehand
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You would flash like you would with any other rom because oour varient and the i9505 have the same harware
ddizzy81 said:
How do I flash a 4.3 ROM made for the i9505....do I just flash it or do I have to do something special beforehand
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Actually you need to flash a Tmobile kernel over the rom BEFORE you reboot.
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SICK MADE DEVELOPMENT
alloycowboy said:
Actually you need to flash a Tmobile kernel over the rom BEFORE you reboot.
Sent from a Insane S4
SICK MADE DEVELOPMENT
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Can I flash the stock 4.2.2 kernel for 4.3 ?
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ddizzy81 said:
Can I flash the stock 4.2.2 kernel for 4.3 ?
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Negative. You'd need the corresponding 4.3 kernel; whether it's AOSP or TouchWiz.
lordcheeto03 said:
Negative. You'd need the corresponding 4.3 kernel; whether it's AOSP or TouchWiz.
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So Ktoonz 4.3 TW kernel will be OK?
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ddizzy81 said:
So Ktoonz 4.3 TW kernel will be OK?
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If you're using a 4.3 TW ROM, yes.

Can i flash a 4.1.1 rom and keep MJB bootloader?

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smallyetzon said:
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Yes you can. Post 3 here has an explanation from a dev. http://forum.xda-developers.com/showthread.php?t=2558311
You MUST be sure that the ROM you are flashing does not contain a bootloader.

[q] question !!!!

Does a rom for sgh-t999 works on sgh-t999L ? because I want to downgrade my phone so I really need an answer
Yes, you can flash ROMs but not firmware
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serio22 said:
Yes, you can flash ROMs but not firmware
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+1 on this. ROMs are OK, but not firmware or modems. But if you are trying to downgrade to unlock, you are out of luck. There is no 4.1 modem for the L.
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DJ_SpaRky said:
+1 on this. ROMs are OK, but not firmware or modems. But if you are trying to downgrade to unlock, you are out of luck. There is no 4.1 modem for the L.
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The 4.3 modem should still work
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serio22 said:
The 4.3 modem should still work
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For mobile data, but not for the USSD unlock process. It was patched before this variant was released.
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DJ_SpaRky said:
For mobile data, but not for the USSD unlock process. It was patched before this variant was released.
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Correct, but it didn't seem like that was the author's intention
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Modem flash odin problem

I cant flash my mobile with odin.I want to flash 4.3 bootloader to have wifi working and I get a F A I L
My phone is N7100 bought from Asia
My father has the same phone and flashed the bootloader properly with the same pc.
Can someone help me with this problem? ??
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Which rom currently you are using?
Is your phone rooted?
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nitol said:
Which rom currently you are using?
Is your phone rooted?
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Ditto N3
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