Develop Bugs

Downgrade from 4.3 to 4.1

My Note 2 was on stock 4.1.2, never rooted or flashed anything. And I have upgraded to 4.3 via OTA.
Before downgrading, everything was fine in Download Mode.
Today, I downgraded back to stock 4.1.1 (from Sammobile), and in Settings, Device Status says Modified.
In Download Mode, KNOX Warranty Void: 1, Custom Binary Download: Yes - 1, System Status and Current Binary: Custom.
So I wonder why my phone is detected as it has been hacked when everything is stock.

KNOX by nature disables you from downgrading your firmware. By doing so you've tripped it and raised a flag of 0x1. It doesn't matter whether you were rooted or stock. It's all the same.

So I have read these 2 threads talking about how to downgrade the bootloader, making it KNOX free.
One is for AT&T model and the other is for international model.
On the AT&T thread, they are flashing the old bootloader from 4.1.2.
The files they are using are sbin (I don't know the extension), tz.img, sboot.bin, and param.bin.
I found sboot.bin and tz.img from the 4.1.2 stock firmware (downloaded from Sammobile).
http://forum.xda-developers.com/showthread.php?t=2500823
http://forum.xda-developers.com/showthread.php?t=2502464

Double-post. Deleted.

[Q] MJ5 'safe' ? If not, what to avoid?

Hi All,
I have a 4.3 custom rom and the MJ5 bootloader.
Mostly I have read that the bootloader is safe and the warranty flag will not be triggered.
However some posts speak about a warranty flag 0x1 while using MJ5.
Is the bootloader completely safe or are there some things I should not flash? (Besides newer bootloader)
Thanks in advance.
Regards

It's not warranty flag, it is Knox flag. It doesn't have anything in common with warranty And yes, MJ5 is safe since it has no Knox.

dalanik said:
It's not warranty flag, it is Knox flag. It doesn't have anything in common with warranty And yes, MJ5 is safe since it has no Knox.
Click to expand...
Click to collapse
Does this mean with MJ5 bootloader I can root, flash custom recovery and nonknox-firmware by PC Odin or knox-firmware by Mobile Odin freely without worrying about knox flag 0 to 1?

congminh1709 said:
Does this mean with MJ5 bootloader I can root, flash custom recovery and nonknox-firmware by PC Odin or knox-firmware by Mobile Odin freely without worrying about knox flag 0 to 1?
Click to expand...
Click to collapse
You can flash custom recovery (Phils v5.15 recommended) and custom ROMs. The only thing that will change is flash counter, but you can reset that with Triangle Away (will be increased each time you go to recovery, so you must run triangle away again), but you don't have to worry about KNOX, if you don't flash ROM wih KNOX (that is update bootloader). ROMs that are flashed from ODIN can have bootloader but if you flash from RECOVERY then you don't have to worry because these ROMs can't have bootloader.

dalanik said:
You can flash custom recovery (Phils v5.15 recommended) and custom ROMs. The only thing that will change is flash counter, but you can reset that with Triangle Away (will be increased each time you go to recovery, so you must run triangle away again), but you don't have to worry about KNOX, if you don't flash ROM wih KNOX (that is update bootloader). ROMs that are flashed from ODIN can have bootloader but if you flash from RECOVERY then you don't have to worry because these ROMs can't have bootloader.
Click to expand...
Click to collapse
It means if I flash stock ROM 4.3+ wih KNOX by PC Odin (update bootloader), does knox flag security change 0 to 1? If knox security is 1 then no way to revert back to 0?

congminh1709 said:
It means if I flash stock ROM 4.3+ wih KNOX by PC Odin (update bootloader), does knox flag security change 0 to 1? If knox security is 1 then no way to revert back to 0?
Click to expand...
Click to collapse
No, if you flash STOCK 4.3+ with KNOX, you will have KNOX security and you will not be able to DOWNGRADE bootloader ever again. Only if you try to flash other non-official ROM without KNOX, will you have KNOX security 1.
And yes - there is no way to reverse KNOX security back to 0.

[Q] Help me choose correct files and order for Odin-ing

Greetings!
I urgently need help to verify what files and in what order to flash to restore my GF's Note2:
It's a GT-7100 that is still on 4.1.1 and eMMC Brickbug Check app reports it as SDS vulnerable... original firmware, execpt for Exynos Abuse, SuperSU and AFwall+, but that was apparently enough to trigger "modified" state and so prevent OTA updates. Installing Wanam Exposed to hide modificatioon did not work, so we unrooted, but forgot to reverse Exynos Abuse fix. Now we're still unable to OTA, but without root as well
I think the next best step will be to flash to 4.3 via Odin and then apply saferoot from cosmyndemeter.
To prevent any warranty issues, I would prefer to keep the phone knox-free, which means that 4.4 update is not an option, and I need the botloader to keep to version mj5 or below.
I got N7100XXUEMK9_N7100VIAEML2_VIA.zip from sammobile.com, which seems applicable (region- and operator-wise), and BL_MJ5_DN3.rar for the unknoxed bootloader.
If I simply flash those two files, will that already trigger a reaction from knox (preventing any future BL-upgrades) or am I safe as long as the phone does not reboot between the two flash processes?

LordHelmchen138 said:
Click to expand...
Click to collapse
Here's what I know.sorry if i cant answer all.
-Stock firmwares from sammobile or other site already have a bootloader included with it, no need to flash other BL.
-Not sure if the bootloader from the MK9 is MJ5 or below, please search.
-Knox enabled bootloaders are upgradable, but can no longer have downgrade.
-If based from your search that MK9 base has a bootloader MJ5 or below, you are good to go.backup and flash via odin.
-Else, find an older rom base with BL MJ5 or below from sammobile.
Good luck. ^.^
Sent from my GT-N7100 using XDA Premium 4 mobile app

Well... I decided to go a longer way that seemed a bit safer:
- got N7100XXDLL4_N7100VIADLL2_VIA from sammobile, which is still exynos-abusable.
- rooted with exynosAbuse
- installed Mobile Odin
- flashed the aforementioned N7100XXUEMK9_N7100VIAEML2_VIA with Mobile Odin, relaxing in the knowlege that Mobile Odin will not flash the bootloader
- flashed the aforementioned mj5 bootloader only with Odin
- unsuccessfully flashed UPDATE-SuperSU-v1.94.zip with Mobile Odin. I guess this was stupid
- rooted with saferoot
result:
rooted phone on 4.3 , so far so good.
Phone Info app reports:
Code:
Knox Warranty Void: 0x0
Bootloader Version: N7100XXUEMJ5
Baseband Version: N7100XXUEMK9
PDA Version: N7100XXUEMK9
CSC Version: N7100VIAEML2
Only my noobishly overoptimistic attempt at rerooting is now visible:
Code:
CUSTOM BINARY DOWNLOAD: yes (1 counts)
CURRENT BINARY: Samsung Official
SYSTEM STATUS: custom
WARRANTY BIT: 0
Can anyone reassure that mj5 bootloader means that knox warranty void cannot trigger, so using triangle away is safe ? I'm still slightly worried that the bootloader simply does not display the knox bit, but that it is still 'primed' in the background and just waiting to blow up...

LordHelmchen138 said:
Code:
Knox Warranty Void: 0x0
Bootloader Version: N7100XXUEMJ5
Baseband Version: N7100XXUEMK9
PDA Version: N7100XXUEMK9
CSC Version: N7100VIAEML2
Only my noobishly overoptimistic attempt at rerooting is now visible:
Code:
CUSTOM BINARY DOWNLOAD: yes (1 counts)
CURRENT BINARY: Samsung Official
SYSTEM STATUS: custom
WARRANTY BIT: 0
Can anyone reassure that mj5 bootloader means that knox warranty void cannot trigger, so using triangle away is safe ? I'm still slightly worried that the bootloader simply does not display the knox bit, but that it is still 'primed' in the background and just waiting to blow up...
Click to expand...
Click to collapse
Knox warranty void 0x0 means the bootloader didn't trigger the Knox but honestly after a point we should all stop caring about Knox ( unless you use it for business purposes or still under warranty ). Now you can flash any custom KitKat ROM and be on Mj5 bootloader. Only thing is that phone won't charge when turned off ( draw back of mj5 and other jelly bean bootloaders ) only being on KK boot loader can charge your phone when turned off . here you got two options if you only flash nd3 bootloader after upgrading to custom KK ROM it will trigger Knox and it will show 0x1 or you can flash the official stock KK rom via odin that will flash the ND3 boot loader and knox remains 0x0 since its an official ROM . So it depends on you what do you plan on doing on your note II ,if you want to try newer ROMs or stick to 4.3 based ROMs
Sent from my GT-N7100 using Tapatalk

Well, the phone is not mine, and there's still about six months of warranty left. So yes, I still have to care about knox
As it stands, 4.3 and mj5 bootloader look fine, so it's only the flash counter and system :modified that I want to take care of.
Sent from my D5503 using XDA Free mobile app

Upgrade from 4.3 MOB to 4.4.2 ATO, no Knox 0x1

Hello,
gives a way to flash with odin from 4.3 to 4.4.2 with odin, but no knox Counter?
greetz

TomTOm_83 said:
Hello,
gives a way to flash with odin from 4.3 to 4.4.2 with odin, but no knox Counter?
greetz
Click to expand...
Click to collapse
If you haven't triggered Knox already when on 4.3 when you flash official stock 4.4.2 via Odin or Kies or OTA it wouldn't trigger Knox but if already triggered while on 4.3 then you can't reverse it

will knox be set to 0x1 when i flash the MJ5 Bootloader with odin?

Hi,
I want to update my note 2 from 4.1.2 to 4.4.2.
Now i have found out that the MJ5 bootloader not flag the Knox counter to 0x1.
So, what happend when I flash the official stock 4.4.2 and directly after that the bootloader MJ5 with odin (WITHOUT installing a custom recovery) ?
Will the knox counter stay at 0x0 or will it change to 0x1?
thx