Database Users

[Q] If the eFuse is tripped, will there really be no way to reset it?

This is a real problem in terms of warrantys and OTAs. It is a complete pain, and I hope it isn't ever included again (or that they only enable it after you enable and download Knox)
As it is, I will still get a note 3, and as I always have my phone insured, it shouldnt be a problem if I brick it, as it is always quicker and easier to get it replaced via insurance anyway.

No. Efuse counter is hardwarebased. Imagine a littel Chip which explodes when counter gets from 0x0 to 0x1. So only option is to replace the chip.
Gesendet von meinem SM-N9005 mit Tapatalk

Well right now we have no definite proof that it is indeed an eFuse, only speculation.
Give the scene more time, they will figure it out.

I think its not an efuse

HitBobLer said:
This is a real problem in terms of warrantys and OTAs. It is a complete pain, and I hope it isn't ever included again (or that they only enable it after you enable and download Knox)
As it is, I will still get a note 3, and as I always have my phone insured, it shouldnt be a problem if I brick it, as it is always quicker and easier to get it replaced via insurance anyway.
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There may be a European law in that Samsung have to prove that what you did to trip knox really did 'break' the phone.
By law modifying your phone does not void warranty.

safereg said:
I think its not an efuse
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Samsung says it's an eFuse: https://www.samsungknox.com/en/blog...ox-enabled-devices-and-knox-warranty-void-bit
MystaMagoo said:
There may be a European law in that Samsung have to prove that what you did to trip knox really did 'break' the phone.
By law modifying your phone does not void warranty.
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EU Directive 1999/44/EC says that the software modification needs to cause the hardware failure to void your warranty, but it's vague about who carries the burden of proof.

rogier666 said:
Samsung says it's an eFuse: https://www.samsungknox.com/en/blog...ox-enabled-devices-and-knox-warranty-void-bit
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Yeah, we need proof.
Exynos can have it reset. Qualcomm no. Efuses are one time programmable. You can't "unblow" an efuse.

exploding?
Um, To the best of my knowledge, e_fuse are are field programmable hardware, not exploding chips. I also know that the warranty center than reset the flag on serviceable trade ins that people surrender. This for a fact from my days at t-mobile, talking to samsung on the phone. People actually send back working phones to recycle, and I had a customer who was worried about having a pre-tripped counter with a refurb. We called, and they told us that if a refurb comes in with 0x1, they can return it to 0x0. More likely than not, the reset path is on a circuit through a service port or sim slot. I've cross posted the bounty the 2600ers. Even if it were akin to a fuseable link, the odds of it being physically impossible to spoof or repair is unlikely.

Above may be true but so far its unfixable for users .
Many of the best development guys have dropped any further investigation .
The how the flag is reprogrammed is yet to be discovered and we are three years down the line with Knox .

Spoofing the knox warranty bit should be no problem if you can play with the code that sends the knox flag to the screen. Software can always misrepresent hardware status.
Repairing a blown efuse is something different.
Samsung says it's an eFuse and that replacing hardware is the only way to reset the knox flag. Why would Samsung repeatedly lie about that on its own site and risk lawsuits from its paying corporate customers if it turns out reversible after all?
Samsung wrote:
an e-fuse will be burned to indicate that a non-KNOX kernel image has been loaded to the device.
[...]
"It is a one-time programmable bit in e-fuse, which can only be turned from “0” to “1” (i.e. burned)."
[...]
There is no way to reverse the Warranty Bit without replacing the Printed Board Assembly (PBA), a hardware component, on the device.
[...]
The KNOX warranty bit is a onetime programmable fuse that signifies whether the device has ever been booted into an unapproved state. If the Trusted Boot process detects that nonapproved components are used, or if certain critical security features such as SELinux are disabled, it sets the fuse. Thereafter, the device can never run Samsung KNOX, device access to the DUHK and DRK in the TrustZone Secure World is revoked
[...]
If the Warranty Bit is fired, the device displays KNOX WARRANTY VOID: 0x01.
If that is the case, unfortunately there is no way to revert the Warranty Bit and KNOX won't work on this device.
The only way to get the device back to its original settings is to replace the PBA (Printed Board Assembly) on the device; hardware replacement will be required.
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Singapore Samsung Live Chat @ KNOW WARRANTY VOID: 0X1

Hi all,
I just had a live chat with one of the samsung rep and this is the reply i got with regards to the KNOW WARRANTY VOID: 0X1.
Regards,
Riz

Chat people say anything at times. The only way we'd know is when someone sends in a device for repair with the Knox flag tripped.
Sent from my Nexus 7 using Tapatalk

riz91060936 said:
Hi all,
I just had a live chat with one of the samsung rep and this is the reply i got with regards to the KNOW WARRANTY VOID: 0X1.
Regards,
Riz
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Sorry I couldn't read the message. I got stuck at the realisation that the browser is IE. It blew my mind. So you're that one person who still uses it!
Joking aside, there have been many cases where the response has been different. You will never know until you actually come across a situation where you have to give the phone in for warranty and get it repaired.

kingzain900 said:
Sorry I couldn't read the message. I got stuck at the realisation that the browser is IE. It blew my mind. So you're that one person who still uses it!
Joking aside, there have been many cases where the response has been different. You will never know until you actually come across a situation where you have to give the phone in for warranty and get it repaired.
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I did send mine for repair with a tripped Knox counter to get the proximity sensor repaired here in the UK it came back reapired and not a problem. But what i did find was the the service centre flashed my phone with an MGA firmware which is pretty old. So in all fairness i can argue that samsung service centre themselves tripped the counter. Samsung at the moment is a headless chicken when it comes to the knox. So guys sit tight and make sure you have your phone insured just in case

nikzDHD said:
Chat people say anything at times. The only way we'd know is when someone sends in a device for repair with the Knox flag tripped.
Sent from my Nexus 7 using Tapatalk
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well, at least i have something in black and white should i need to claim the warranty for my device.

kingzain900 said:
Sorry I couldn't read the message. I got stuck at the realisation that the browser is IE. It blew my mind. So you're that one person who still uses it!
Joking aside, there have been many cases where the response has been different. You will never know until you actually come across a situation where you have to give the phone in for warranty and get it repaired.
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Click to collapse
i was in the office to IE is what i had to use.
my dear cousin tripped his knox warranty counter few weeks back, while flashing firmwares and rooting them over and over again.
recently his i9505 camera and flash stopped working so he had to send it in to the service centre, with the knox warranty still tripped.
few days later he got a call saying his phone was ready for collection and nothing was mentioned about the knox warranty counter.
he later checked and the counter was still tripped, so samsung did nothing about it and still honor the warranty.
maybe different service centres in different countries have different warranty issues about the knox thingy?

I've been saying this over in the KNOX thread in general. The service centers are simply contracted companies. None of them are officially Samsung.
Sent from my GT-I9505G using XDA Premium HD app

Still it is best for someone to try it out instead of relying on the Samsung Live Chat especially when the person "Anthony" does not seems to know is "Knox Flag:0x1" is.

tanjiajun_34 said:
Still it is best for someone to try it out instead of relying on the Samsung Live Chat especially when the person "Anthony" does not seems to know is "Knox Flag:0x1" is.
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Just to inform you guys that regardless of whatever the counter displays,That tripping the Knox counter would result in an permanent efuse on the hardware.And of course not reversible unless you switch the entire board out.Chainfire had given up with anything thats got to do with Knox.

Root note 4 WITHOUT Tripping KNOX???

Will be in the near future a way to Root The Note 4 WITHOUT Tripping KNOX? I want to root but don't want to loose my warranty.
Is it possible???

i doubt it if so it will be months away but rooting alone does not void Warranty

Uniquebarbee said:
i doubt it if so it will be months away but rooting alone does not void Warranty
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Are you sure about this?

pedmond said:
Are you sure about this?
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From what i've read it's supposed to void your warranty, yet there's people who say they've had warranty repairs carried out with KNOX tripped, so it's pot luck as far as i tell

Have them explain how tripping knox broke your hardware.
Sent from my SM-N910P using Tapatalk

I work for an authorized Samsung Service Center in Canada and we do not check knox fuse when you bring your device in. Just make sure it's unrooted before you bring it in not to make things too obvious

There must be someone like the dev who create towelroot that didnt trip knox for note3 and previous versions.
Am using it on my tab note 2014 edition.

Honestly, atm it's too risky to root with tripping KNOX and then hope that your warranty service won't care about that. It's a 50/50. Waiting for a non-KNOX root.

If you're in the EU with all the many consumer protection laws, I doubt Samsung would get away with not repairing a hardware fault on a device unless they can prove it's because you rooted.
I'd soon be taking them to a small claims court if my now unrooted phone screws up within two years and they refused to repair or replace (I tripped knox)
knox being a hardware fuse is simply a shameful attempt by Samsung to claim you have modified the hardware and therefore voiding your warranty.
Just root if you really want it, like people have said before, most repair centres don't care if the knox fuse had been changed.

Would Knox will be tripped if I install stock firmware through Odin?

captainbirdseye86 said:
If you're in the EU with all the many consumer protection laws, I doubt Samsung would get away with not repairing a hardware fault on a device unless they can prove it's because you rooted.
I'd soon be taking them to a small claims court if my now unrooted phone screws up within two years and they refused to repair or replace (I tripped knox)
knox being a hardware fuse is simply a shameful attempt by Samsung to claim you have modified the hardware and therefore voiding your warranty.
Just root if you really want it, like people have said before, most repair centres don't care if the knox fuse had been changed.
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Click to collapse
Hmm, here in Lithuania, my almost 2 yr old, heavily modified S3's SIM reading died (EFS partition R.I.P) and they said they won't repair it because of obvious reasons. I forgot to unroot though. That's why I'm really scared to touch my N4 yet.

Just make sure you unroot flash a stock firmware if you have to repair your phone for some reason. Who needs KNOX anyways

Uniquebarbee said:
Just make sure you unroot flash a stock firmware if you have to repair your phone for some reason. Who needs KNOX anyways
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Don't you think those 'professional' guys check KNOX before doing anything?

Actually if you still want to retain warranty status I would suggest to root after 8-9 months(assuming it's 1yr warranty) after getting the phone. If you can maintain that long without going to service centre, I'm certain that one would not need to visit a service centre after rooting the phone.
That way 8-9 mnths from now more developments would have been released and you'll have more things to try out without the need of going to a service centre.

I'm not sure what professional guys you speak of but the carriers service center does not care when fixing your phone as long as you return to stock firmware before you turn it in. So you could always wait for eternity

Uniquebarbee said:
I'm not sure what professional guys you speak of but the carriers service center does not care when fixing your phone as long as you return to stock firmware before you turn it in. So you could always wait for eternity
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By professional I meant carriers service. So basically once my phone, god let that not happen, breaks, I just install non-rooted firmware with ODIN and I'm good to go?

Yes :good:

Uniquebarbee said:
Yes :good:
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Well I'ma trust you on this one, let the customization begin!

:good: ^5 welcome to the darkside

I'm not rooted yet but am considering it once a few more weeks pass.
If something's fundamentally wrong with the hardware, it should manifest within a month, I'd like to think. Plus, I've never had a phone need repairs in the past. Which obviously bears no relation to this one going bad or not.
I doubt there'll be a ton of ROM choices for the Duos version but Play Store, Titanium, and Nandroids are nice to have.
Sent from my SM-N9100

[Q] knox issue

hi there, have been a long time lurker and learnt alot through this site, but ..
i have an issue with a knox flag.. i know its not reversible but, the phone has never been rooted by me.
it was purchased brand new on a contract and developed a charging fault, it was sent back to the service provider who stated the phone was not under any warranty due to this. why would i want to remove warranty on a £600 phone??
it was updated to the latest firmware via kies on its initial supply and has been restored to factory defaults before it went back.
so my question is, how has the knox flag been tripped ?
any help would be gratefully received...
thanks all ..

Knox triggers when there are changes to the bootloader and system that are not signed by samsung.
When did you notice that knox was tripped?

No ideas ??

GDReaper said:
Knox triggers when there are changes to the bootloader and system that are not signed by samsung.
When did you notice that knox was tripped?
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many thanks for the reply. . We were told by Vodafone when it was sent for repair as not charging.. They stated when the knox goes that's one of the symptoms. .. knowing what I do know that statement is a bit rubbish ... I'm not going to void a Warranty on a phone . It's never been rooted .. was updated via kies even says the firmware is valid and official

Many people have tripped knox and no one has a charging problem. So yeah, they talk nonsense.
Unfortunately samsung won't have any say in this because you bought it from vodafone and that means that they have to take care of the repairs.

GDReaper said:
Many people have tripped knox and no one has a charging problem. So yeah, they talk nonsense.
Unfortunately samsung won't have any say in this because you bought it from vodafone and that means that they have to take care of the repairs.
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Vodafone have refused to repair it .. apparently as it's blue case is not supported by them. So this means it's trial by fire and have to send it to samsung to get repaired . They were not willing to do anything.
I was wondering of the effort involved in changing the case to white or black.. seems Vodafone only repair the normal colours..
but that still makes me wonder about how the knox was tripped in the first place.

So just to confuse everything... we sent it back to samsung ... It came back supposedly repaired .. no mention of knox issue . It now overheats on charge so is going back BUT it was passed by them as in Warrenby ...

I don't think they check if the knox flag was tripped when it's a hardware related issue.
Mine gets hot too when charging. I think it's normal. It also says in the provided user manual that it might get a hot while charging and that this is normal.

Knox tripped = warranty repair denial

I've seen a few threads with people asking what the ramifications are of having knox tripped. I rooted my Note 4 as soon as I could and tried a few custom roms. I consistently had problems with bluetooth connectivity and gps tracking across stock, Cyanogen, and modified TW roms. I'd had enough and decided to send my phone to Samsung for repair citing these three issues:
1. Gps cannot determine my location accurately
2. Bluetooth audio skips/stops every few minutes on all devices
3. In one corner of screen there is a hairline crack but there doesn't appear to be any physical damage. It's hard to describe this but it wasn't from a drop. My best guess is pressure from accidentally sitting on it.
Unit was received and immediately sent back unrepaired due to Knox flag being tripped. I'm not really upset at that they wouldn't troubleshoot the gps and bluetooth. Those could be software and according to their terms i've modified that. I'm surprised they didn't email or call to offer a paid out of warranty service though.
Granted, I represent a sample size of 1 so keep that in mind.
* Unit was flashed to stock via Kies before being sent in for service.

Well, that's exactly what "Knox warranty void" flag is for... You can get it repaired through the store you bought it from if you are in EU though.

If you're in the European Union and your device falls faulty within the first 6 months, it is assumed it is a manufacturer's defect. Rooting your device does not void your warranty with the store because in order for the store to say "we cannot repair the device because it's been rooted" they have to have evidence that rooting the device was the direct cause of the malfunctions. If they refuse, threaten with Trading Standards and inform them that they're in breach of your statutory rights.

You should have a look at this: http://forum.xda-developers.com/android/general/samsung-knox-trigger-bothers-t3028728

Hello!
I need send my note 4 to warranty but I have KNOX WARRANTY VOID: 1
PLEASE, there are some way to clean this count for warranty reasons...??? (in note 2 was possible)
THANK YOU SO MUCH !

Carom3de said:
Hello!
I need send my note 4 to warranty but I have KNOX WARRANTY VOID: 1
PLEASE, there are some way to clean this count for warranty reasons...??? (in note 2 was possible)
THANK YOU SO MUCH !
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Click to collapse
That's been patched and not possible that I've seen.

nine5raptor said:
That's been patched and not possible that I've seen.
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Click to collapse
Thank you

speedyjay said:
If you're in the European Union and your device falls faulty within the first 6 months, it is assumed it is a manufacturer's defect. Rooting your device does not void your warranty with the store because in order for the store to say "we cannot repair the device because it's been rooted" they have to have evidence that rooting the device was the direct cause of the malfunctions. If they refuse, threaten with Trading Standards and inform them that they're in breach of your statutory rights.
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This. It's along the same lines of dealerships attempting to void warranties on modified cars when there are failures that are in no way due to the modifications. The main issue is all the runaround you may have to deal with to get the carrier or manufacturer to step up depending on whom you're dealing with.