possible to downgrade to 4.1.x from 4.3? - Galaxy S III Q&A, Help & Troubleshooting

My phone currently has cm11 but it was stunning stock 4.3.x before that. I'm just wondering if I can download the ROM (including bootloader) via flashing the ROM (from Sammobile) via odin.
Thank you very much

4.1 and 4.3 have different efs folder versions so by downgrading you will most probably lose your imei.
workaround is if you have efs v1 backup.
If not you can flash the 4.1 firmware then flash a 4.3 modem
Happy flashing

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[Q] Updating from ICS 4.0.4 to Jellybean 4.3

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Help! From Gingerbread 2.3.6 to JellyBean 4.1.2

Hello,
a friend owns a nonrooted SG2 with GB 2.3.6 on it.
Now its time to update to a Sammy based custom Rom like Biftor-Rom v14, which is based on XWMS1.
So I will flash PhilZ XWMS! Kernel via Odin on this phone.
After recovery reboot I'd flash the Biftor Rom from PhilZ Kernel.
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Yes it will work
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Installation MIUI on Galaxy S3 with Samsung stock 4.3 rom

Hello gentlemen, I have Galaxy S3 and I have there stock rom from samsung android version 4.3 (specifically i9300XXUGNA8) and I would like to try a MIUI rom. However I find guide only with downgrade on stock rom version I9300XXDLJ4 which is android 4.1.1. But I know that it used old EFS file version 1 and in my rom is EFS v2. So if I downgrade it, the telephone was not work - especially signal from operator. Does anyone have any advice or some guidance on how the stock Samsung rom to MIUI. Thanks for the advice. (and sorry for my english)
pisek3 said:
Hello gentlemen, I have Galaxy S3 and I have there stock rom from samsung android version 4.3 (specifically i9300XXUGNA8) and I would like to try a MIUI rom. However I find guide only with downgrade on stock rom version I9300XXDLJ4 which is android 4.1.1. But I know that it used old EFS file version 1 and in my rom is EFS v2. So if I downgrade it, the telephone was not work - especially signal from operator. Does anyone have any advice or some guidance on how the stock Samsung rom to MIUI. Thanks for the advice. (and sorry for my english)
Click to expand...
Click to collapse
I've used the MIUI rom for s3, and trust me, it's really good. The only downside is that you have to downgrade to android version 4.2.2 which is CM based. The latest version is based on 4.2.2, not 4.1.1
You have to do this:
1) Root your s3 following a proper guide. There are plenty on the net. Just google it.
2) Install a custom recovery. I recommend TWRP or Philz Touch recovery.
3) Download the MIUI rom from their official website en.miui.com
4) Flash the rom using the recovery.
Done. Hope this helped

Updating from 4.4.2 to 5.0.1?

I'm looking for a rooted stock rom I can flash using Mobile Odin. Any help or direction will be helpful thanks:good:
At (galaxy note 3 root dot com, sorry I cant post links until 10 post made) they have the stock firmware. I flashed that (4.3) and was back to stock. It prompted me to upgrade to 5.0 (after two 4.4 upgrades) and than I rooted. You can go that route. I have a nandriod of rooted 5.0. Best bet is to flash stock firmware from link (via odin), factory upgrade to where you want and root.
Or my advice is forget about 5.0 as it sucks and flash an aosp based rom like cm12.1 or aicp 10 (both running 5.1.1) and....blast off! I never thought I could upgrade my phone and speed it up at the same time.
I just found this http://forum.xda-developers.com/note-3-sprint/development/rom-t3132662 rooted stock 5.0

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