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[Q] "Invalid magic string" - Downgrade Android 4.4 to 4.3

OP AlaronTamnar

20th August 2014, 05:25 AM   |  #1  
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Hi

I'm trying to downgrade Android 4.4 KitKat to 4.3 JellyBean

Had this error "Invalid magic string" when I flashed from Odin

Flashed a custom Phill Recovery and did a format /system /data thinking it would erase the Knox protection.

Now im stuck with no OS and I cant flash.

Any help?

20th August 2014, 06:36 AM   |  #2  
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You have to re-flash 4.4.2 KitKat from Odin.

Once you've installed the KitKat bootloader which is KNOX enabled you've already tripped the warranty flag if you have since flashed any unsigned firmware image (recovery, ROM, kernel) and once it is tripped it cannot be reset, nor can the KitKat bootloader be downgraded.

You can flash a Jelly Bean based ROM if you want but that will have no effect on the KNOX flag that you have probably already tripped. Users of supported devices who have not upgraded their bootloader to KitKat can flash @civato's FlexNote ROM if they want to experience KitKat on the Note 8.0 without tripping the Knox flag.

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20th August 2014, 08:00 PM   |  #3  
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Question [Q] "Invalid magic string" - Downgrade Android 4.4 to 4.3
Quote:
Originally Posted by ramjet73

You have to re-flash 4.4.2 KitKat from Odin.

Once you've installed the KitKat bootloader which is KNOX enabled you've already tripped the warranty flag if you have since flashed any unsigned firmware image (recovery, ROM, kernel) and once it is tripped it cannot be reset, nor can the KitKat bootloader be downgraded.

You can flash a Jelly Bean based ROM if you want but that will have no effect on the KNOX flag that you have probably already tripped. Users of supported devices who have not upgraded their bootloader to KitKat can flash @civato's FlexNote ROM if they want to experience KitKat on the Note 8.0 without tripping the Knox flag.

ramjet73

Hi Ramjet

Thanks for your kind assistance.

Ive flashed the 4.4.2 KitKat with Odin and the device is working.
However, I was not able to flash the JellyBean rom as it prompted the "Invalid magic string" error again.

I'm using this Google Play: MultiWindow Manager app to enable all my programs to run multi-windows.

With KitKat firmware, I was prompted the following error message after rooting:
java.io.FileNotFoundException: /system/csc/others.xml: open failed: EROFS (Read-only file system)

Hence, I would really need JellyBean back.

Any possibility?

Thanks!
20th August 2014, 08:22 PM   |  #4  
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Quote:
Originally Posted by AlaronTamnar

Hi Ramjet

Thanks for your kind assistance.

Ive flashed the 4.4.2 KitKat with Odin and the device is working.
However, I was not able to flash the JellyBean rom as it prompted the "Invalid magic string" error again.

I'm using this Google Play: MultiWindow Manager app to enable all my programs to run multi-windows.

With KitKat firmware, I was prompted the following error message after rooting:
java.io.FileNotFoundException: /system/csc/others.xml: open failed: EROFS (Read-only file system)

Hence, I would really need JellyBean back.

Any possibility?

Thanks!

Some users have claimed to flash back to 4.2 from 4.4 using Odin but that always excludes the bootloader and strange things can happen when using the KitKat bootloader with a Jelly Bean ROM. Here's a thread from the SamMobile website that talks about those issues. In theory flashing a Jelly Bean ROM zip should be the same as flashing JB with Odin since the KK bootloader can't be downgraded so I'm not surprised that you are having some issues.

There seems to be a variety of experiences when flashing a 4.2 ROM with the 4.4 bootloader installed and there is a thread in the Q&A section that discusses that. I'm running the FlexNote ROM by @civato and it fixes some of the KitKat issues like Spen alignment so I'm not even considering going back to Jelly Bean.

ramjet73
16th December 2014, 07:29 AM   |  #5  
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HI i am facing a serious problem. i was just trying to do a factory reset to my phone and i got stuck. It rebooted and it didnt go to team win. i was using DN3 Rom v5 with agni kernel. so i decide to go to stock. and now i have a problem. i booted a 4.1.2 original rom and i was back to stock and then i tried to update using ATT and after rebooting it got stuck in The Samsung Galaxy note 2 boot screen and i tried everything i know to work things out. but it doesnt work. i cannot enter into recovery mode all i can do is go to download mode. i have tried installing jellybean but when i read about it it said kk boot loader is locked and the only way is to install a kk ...4.4.2 rom. but the rom file i have is zip and i dont know how to convert it into md5 file so that i can boot using odin. i would really appretiate if you can help me with this problem. i tried installing a custom recovery but it doesnt work,,, please help
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