Android 4.3 on Galaxy S3 after root and custom rom

Well it depends on what style of android are you looking for, a stock android look like the Nexus phones have or a Samsung Touchwiz.

It depends on you (as for me I wanted to go back stock so I cleared the flashcounter as well)

THIS WILL WIPE YOUR INTERNAL STORAGE ! ( loose all apps and stuff )

A) If you don't care about the flashcounter

- Just download Odin 3.0.9 http://xdaforums.com/showthread.php?t=2189539
- I downloaded I9300XXUGMK6_I9300OXAGMK6_OXA which is a clean 4.3 UK NO Bloatware firmware ( if you need a fast Mega download link PM me )
- Open Odin3 v3.09
- Restart phone in download mode (Press and hold Home + Power + Volume down buttons)
- Connect phone and wait until you get a blue sign in Odin
- Add AP_I9300XXUGMK6_2168382_REV00_user_low_ship.tar.md 5 to AP
- Add BL_I9300XXUGMK6_2168382_REV00_user_low_ship.tar.md 5 to BL
- Add MODEM_I9300XXUGMK6_REV02_REV04_CL1413323.tar.md5 to CP
- Add CSC_OXA_I9300OXAGMK6_2168382_REV00_user_low_ship.tar.md5 to CSC
- Make sure re-partition is NOT ticked
- Click start button, sit back and wait a few minutes.
- If you encounter any issues with the firmware (Any FC, Bootloop etc)
- Boot into recovery mode (Home+power+vol up)
- Choose to wipe/factory reset. (THIS WILL ERASE ALL OF YOUR DATA INCLUDING YOUR INTERNAL SD CARD!)
- Then choose reboot and you should be good to go!

B) If you want to have Official ( so you can send it back to Samsung if you still have warranty )

- Just download Odin 3.0.9 http://xdaforums.com/showthread.php?t=2189539
- Search for your 4.1.2 firmware http://xdaforums.com/showthread.php?t=1646610 or on Google, download it.
- Extract the zip you downloaded so you will have a the .tar.md5 on your desktop or where you extracted it.
- Open Odin , and click on AP and select the .tar.md5 you got from the zip.
- Restart phone in download mode (Press and hold Home + Power + Volume down buttons)
- Connect phone and wait until you get a blue sign in Odin
- Make sure re-partition is NOT ticked
- Click start button, sit back and wait a few minutes.
- If you encounter any issues with the firmware (Any FC, Bootloop etc)
- Boot into recovery mode (Home+power+vol up)
- Choose to wipe/factory reset. (THIS WILL ERASE ALL OF YOUR DATA INCLUDING YOUR INTERNAL SD CARD!)
- Then choose reboot and you should be good to go!
- Then you must root the phone again,
- Use the Triangle Away app
- Reset the flashcounter and from there just follow the steps from A)

Hope it helped you

minu94 said:

So i can flash the 4.3 stock rom directly taking into account that now I have a 4.1.2 based custom rom? And I guess thay I have to choose my country from that rom list

Sent from my GT-I9300 using xda app-developers app

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Yes, and you don't have to choose the one for your country. You can you any firmwork you want. My phone came with XEF ( France ) but I live in Romania and currently I have a UK one and there is no call or mobile network errors.

minu94 said:

Thank you! I live in Romania aswell. I was thinking on flashing the rom for Switzerland. I heard that it is one of the best 4.3 stock rom's.

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Yep it's the best one out there yet