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A few things on knox / rooting and bootloaders that need more testing / development

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By xclub_101, Senior Member on 9th February 2014, 04:08 PM
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3rd May 2014, 04:11 PM |#81  
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Hmm I analyzed this. It contains an sboot.bin for exynos devices AND an EMMC1 firmware update file.
That is the key to knox reset.
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3rd May 2014, 06:27 PM |#82  
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Just re read a couple of pages back and it shows that it has been possible to restore original status - no Knox trip info in DL mode - very interesting indeed.

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4th May 2014, 11:31 AM |#83  
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Quote:
Originally Posted by RuchRha

PS : I had done all this steps on ND1 firmware, and this will not keep root access, to root Knox has to be tripped. Also to note this might get (patched) in future updates (bootloaders) if we look at Samsung's history of patching stuff , though not sure about it...

This will not work on any variant other than Exynos (Note 3) due to different processors and the boot system of both Exynos and Snapdragon. (the file for resetting Knox (Exynos) contains Sboot which is only for the Exynos variant which cannot be used on Snapdragon as it uses Aboot). So this is by no way meant to work on SD variant or any other Samsung device ie S5/S4/Note 2 etc. and hence requested NOT TO USE IT on any other model than Exynos Note 3.

Really interesting step!
But from my understanding, this method tested only on ND1 firmware with ND1 bootloader, and how about if we have older bootloader? (I use NC1).

Many thanks for this founding!
4th May 2014, 11:37 AM |#84  
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Quote:
Originally Posted by haybill

Hello @RuchRha--I saw you on another thread and tracked you down to this one--it has been reported that flashing Root using CF-Root, to a Canadian N900W8, was possible to do without compromising KNOX warranty counter-- do you know whether the same applies to SM N900 variant?

Apologies if this has been asked./answered but couldn't find reference to the answer.

It certainly is not possible at the moment, but trying to see what we can/could achieve regarding this pretty soon..

Quote:
Originally Posted by smeet.somaiya

Attempting to downgrade is worth trying. If it succeeds it would be great. If it fails with "Firmware Upgrade encountered issue" no worries just flash stock recovery back and the phone would be up again.


Sent from my Galaxy S5 GT-N7100

Well yes, it's actually worth a shot but I am pretty annoyed I dint had an 4.3 firmware and trying to download the same from sammobile but it failed every time when only 10-20 mb is left to be downloaded and this has happened 3 times, I am looking for any mirrors for them instead of using sammobile.

Quote:
Originally Posted by iede

Really interesting step!
But from my understanding, this method tested only on ND1 firmware with ND1 bootloader, and how about if we have older bootloader? (I use NC1).

Many thanks for this founding!

It should work on any fw/bootloader related to 4.4.2, but I have no idea about 4.3
4th May 2014, 12:03 PM |#85  
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@RuchRha can u post a video on how to reset knox on exynos?
4th May 2014, 03:42 PM |#86  
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after flashing test bootloader maybe a problem with input stock recovery, so, for fixing I'm made package with standart bootloader and param.bin

http://forum.xda-developers.com/show...1&postcount=21
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4th May 2014, 03:47 PM |#87  
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Quote:
Originally Posted by xclub_101

Quick question to have a more complete view on where things are - I do not have the N900 and I know little about it so the question might already not be a problem there but it certainly is on N9005 - can you also downgrade the firmware after you write the knox-reset piece?

I'll test it!

Edit/Update 1 : Wowzer guys, I have some good news for you all, I have been successfully able to downgrade from 4.4.2 to 4.3 without any issues, The firmware I downgraded to is MI3 and Knox is not present in download mode will post steps soon and guide you through steps for a safe downgrade, PS : this is only for SM-N900/N9000/Exynos for now, screenshots attached..

Edit/Update 2 : Steps to Downgrade (Note 3 Exynos only!)

1 - Download the bootloader.zip and extract then flash in Odin. (Find in attachments) (don't select any other option in odin except F reset time and auto reboot) (are selected by default).

2 - Download any 4.3 JellyBean Firmware from sammobile.

3 - After flashing the bootlaoder reboot into stock recovery (power+ home+ vol up) and wipe data/factory reset and cache partition

4 - Turn off the device and reboot into download mode and flash the 4.3 Firmware in Odin.

5 - After flashing completed let the device boot till boot screen and pull out the battery and turn it off then turn it on again and reboot into recovery (power+ home+ vol up) and wipe data/factory reset and cache partition once again and reboot and let the device boot up.

That's pretty much it, you've safely downgraded to Android 4.3 from 4.4

This is only for Note 3 Exynos!

I'll be testing some work around's for the N9005 (Snapdragon) to reset Knox/Firmware Downgrade once I get that device as I have given mine to a friend, and have been saving money to buy a new or used N9005.
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6th May 2014, 12:44 PM |#88  
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To anyone who wanted to try this knox reset tool.
I can confirm the method by @RuchRha that it definitely valid and I done it myself on N900 ND1 Firmware. I'm now very happy rooting my phone and will be able to get full warranty when needed.
However, this method will WIPE YOUR INTERNAL SD. So make all the necessary backup before reset knox.

----------------

There's ND2 Firmware released, can anyone confirm that this method still work or not ?
I hope it's not a patched to prevent knox reset.
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6th May 2014, 10:18 PM |#89  
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Quote:
Originally Posted by XZQ't

To anyone who wanted to try this knox reset tool.
I can confirm the method by @RuchRha that it definitely valid and I done it myself on N900 ND1 Firmware. I'm now very happy rooting my phone and will be able to get full warranty when needed.
However, this method will WIPE YOUR INTERNAL SD. So make all the necessary backup before reset knox.

----------------

There's ND2 Firmware released, can anyone confirm that this method still work or not ?
I hope it's not a patched to prevent knox reset.

I doubt they would patch as it's official file they use to reset. If they did they would have no method to reset themselves

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6th May 2014, 10:22 PM |#90  
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How about the check whether KNOX is actually tripped on an N900W8 without knowing it yet, we're still on the two region different bootloaders - Leaked Mexican NA2 and Canadian NB7, which is identical as they are the first N900W8 4.4.2 ROM bootloaders.

Well first of all, as the Mexican NA2 is a leak, you can't download it officially anywhere, and could have been a leak from a developer build.

Also to think, why does this only work on the Canadian N900W8 and not the Mexican N900W8? (verify this for me, I have seen 0 reports of successful Mexican 0x0 flashes as of yet).

We essentially flash Mexican NA2 over Canadian 4.3 which allows us to do anything we want and not trip KNOX. BUT -> If you flash official NB7 Canadian, you cannot downgrade back to an older firmware and not trip KNOX, unlike on NA2 Mexican.

Is there a possibility that the chip already blown the fuse but the system fails to detect that particular fuse due to a bug, and still reports fine to the system (Bootloader view, and in-system view (Phone Info))?
9th May 2014, 01:05 PM |#91  
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Quote:
Originally Posted by XZQ't

The site is gone for few days now. It's believed to be taken down by Samsung.
But there're people offer the file via pm in knox bounty thread, you can try your luck there.

Here is the link

Subhash Chander has shared a file with you - Subhash Chander shared "BL_HA3GZS_CLEAR_WARRANTY_BIT.tar": https://onedrive.live.com/redir?resi...hint=folder%2c



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