Hello,
I recently picked up a Canadian Galaxy S4. This is my first android device after using an iPhone 4 for the last 3 years. I'm a tinkering kind of guy so when I heard about the whole custom ROM community for the s4, I was excited. I've been reading up on this for the last 3 weeks and I still have a couple questions that I haven't really seen a solid answer for specifically regarding the 1337m model.
1) If I root it would be nice to be able to reverse things should I need to send it in for warranty repair. I understand that triangle away isn't working on the latest MG1 firmware (which my device came with). I know that the ME7 update on the US version included a bootloader that no longer allowed downgrading firmware. Is this the case with the Canadian models as well? If it is possible to downgrade are there any special steps that need to be taken, or can I just flash a stock MDJ image via odin/heimdall
2) I have read the whole thread about the issues with the knox warranty void efuse. I checked the download mode on my phone and it does not have any of the knox info on it, so as I understand it, knox isn't enabled and therefore as long as I don't update to new stock firmware and I shouldn't trip the efuse. I have disabled auto-update in the settings. Is there anything else that I should do or be aware of to make sure that my phone doesn't update and force the knox stuff on my phone.
At the end of the day, if my warranty is permanently void, that's fine, but if there's a way that I can still keep the ability to restore my phone to 100% stock without tripping and binary counters or efuses I'd like to make sure that I know and understand how to do that before I start flashing custom roms rather than trying to figure it out in a panic if something goes wrong on my device.
i have a galaxy s4 i9500 with android 4.2.2 and i read that if i update to 4.3 i will get a security feature called KNOX which tracks your custon kernel flashes and cannot be reset. and also you can't flash back to 4.2.2. is that true?
if it is so:
1.what will happen if you'll try to flash 4.2.2 with odin?
2.what other disadvantages KNOX have?
3.shoiuld i really care about KNOX if my phone's warranty is already void?
4.can KNOX harm my device by any way?
please answer the question by order!
i am thankful for any help i can get in this forum and appriciate everyone who answers my questions beacause i wanna know if i should update or not.
P.S.:if i have 4.2.2 can i install cyanogenmod 11 (unofficial) or i need to update to 4.3 to do that?
Knox doesn't track custom kernel flashes specifically, it detects if you flash anything non-samsung (whether it's cf-autoroot, custom recovery or whatnot). It just says knox 0x0 or 0x1, if it's 0x1 your warranty is void. There is another counter detecting number of flashes, but that can be reset with TriangleAway. Knox cannot be reset. EDiT: TriangleAway only works on i9505, sorry.
1. If you don't have a knox-enabled bootloader you can flash an older rom version. Boot into recovery mode, if you see a knox counter there you cannot flash older firmwares than the one you already have (on i9505 there was one knox-enabled fw before 4.3). If you don't see anything knox related you can flash what you want, but once you flash a knox enabled rom you cannot downgrade to older official samsung roms.
2. Besides not being able to reset the knox counter there isn't really anything special. Atleast none that I have noticed. SuperSU asks if you want do disable knox-features upon first run.
3. No, then it doesn't really matter. Unless you really want to flash an older firmware from samsung.
4. No, it's a samsung feature.
If I were you I'd flash official 4.3 builds anyway, as they're generally much faster and much more stable, atleast for me on i9505. And the improvements outweigh the downsides of knox. 4.3 feature list: http://www.sammobile.com/2013/10/18...al-android-4-3-update-for-galaxy-s4-gt-i9500/
Hey,
I have recently acquired SGS4 in place of my SGS3. I have used to change a rom every week, but now all I would like is a stable, rooted and .
I just discovered all the fuss about Knox and I am even more dissapointed. I really didn't want to buy another Samsung device (Exynos resources, SDS and their horrible overlay) but the offer on it was just insanely good compared to everything else to I took it.
Anyway, below are my current bootloader/firmware information:
http://i.imgur.com/G5pThnv.png
http://i.imgur.com/sl7M1VC.png
As you can see it is 4.3 from T-Mobile from november.
Now would you be so kind and tell me:
Can I root and modify my rom and bootloader on any custom without loosing my warranty?
If not, can I root and change the rom to the google edition?
If nope again, hopefuly I can at least use root with one of the latest Samsung roms? (without T-Mobile bloatware)
You live in the EU. That means that even if Samsung doesn't want to fix your device because you tripped Knox (unlikely that they won't fix it), the store you bought it from still has to fix it even with Knox tripped. That is consumer law which should also apply in Poland.
You can only root without tripping Knox.
You can not flash a recovery without tripping Knox, thus you cannot flash custom roms without tripping it.
So just root and flash the rom you want. You can even skip the part of rooting and just flash a custom recovery.
There are no downsides if you tripped Knox.
Hello,
I want to flash cyanogenmod or any other custom rom on my Galaxy s4. (1 year old)
I'm too scared to trip my knox and void my warranty if it ever breaks.
Is there any way to install a custom rom without tripping it?
Thanks!
No way to install AOSP rom without tripping knox. However, you can install custom touchwiz rom without tripping knox.
we are in the same boat. My warranty has only three months remaining. I will only trip knox if ktoonsez kernel come for official TW lollipop.
ha966 said:
Hello,
I want to flash cyanogenmod or any other custom rom on my Galaxy s4. (1 year old)
I'm too scared to trip my knox and void my warranty if it ever breaks.
Is there any way to install a custom rom without tripping it?
Thanks!
Click to expand...
Click to collapse
I tripped knox 2 months after purchase.
Chances are low that a brand new device malfunctions. Even so, there are reported cases where people who tripped knox said that they were still able to send the device to be serviced in warranty conditions.
I'm going to try it, I will let you guys know if it worked.
Flashed cyanogenmod, works like a charm.
I have 0x1 but that seems that i still have warranty.
ha966 said:
Flashed cyanogenmod, works like a charm.
I have 0x1 but that seems that i still have warranty.
Click to expand...
Click to collapse
Your warranty is void.
ha966 said:
Hello,
I want to flash cyanogenmod or any other custom rom on my Galaxy s4. (1 year old)
I'm too scared to trip my knox and void my warranty if it ever breaks.
Is there any way to install a custom rom without tripping it?
Click to expand...
Click to collapse
You cannot flash cyanogenmod (or other AOSP roms), but you can flash other Samsung-based custom roms without tripping knox.
The method is quite complex though. Generally you have to downgrade your kernel, root with towelroot, use Mobile Odin Pro to flash a new rom preserving root, update bootloader to have wifi.
The risk of mistakes is quite high.
But if you want to have a deeper look, jump here
As you will see the first step is rooting without tripping knox, which is already a challenge.
Once you achieve that, you will find that root gives you already enough mod opportunities, so you may not feel the need to flash custom roms.
khsh97 said:
Your warranty is void.
Click to expand...
Click to collapse
Incorrect. He lives in the Netherlands. Tripping knox never voids your warranty in the Netherlands. Samsung made an official statement about it.
It depends entirely in which country you live. In the EU for example, tripping Knox can never void your consumer rights.
Lennyz1988 said:
Incorrect. He lives in the Netherlands. Tripping knox never voids your warranty in the Netherlands. Samsung made an official statement about it.
It depends entirely in which country you live. In the EU for example, tripping Knox can never void your consumer rights.
Click to expand...
Click to collapse
That is awesome. But as far as I know Samsung are not the ones who will handle the warranty, but the store from where you bought it the phone.
I bought mine from DOMO (an electronics store here in my country), which means that they will handle the warranty, not Samsung.
Either way, warranty is void once you temper with the software (rooting and changing roms), it is even stated in the "Warranty will be void if" clause. Unless you change back to stock before sending it in.
GDReaper said:
That is awesome. But as far as I know Samsung are not the ones who will handle the warranty, but the store from where you bought it the phone.
I bought mine from DOMO (an electronics store here in my country), which means that they will handle the warranty, not Samsung.
Either way, warranty is void once you temper with the software (rooting and changing roms), it is even stated in the "Warranty will be void if" clause. Unless you change back to stock before sending it in.
Click to expand...
Click to collapse
Samsung gives warranty to their product. They do that freely. But that's completely separate from your consumer rights.
The store where you bought it from has a legal obligation to fix the phone within a certain period of time. You can even pull the device apart, put it back together and you still have your rights. As longs as the fault is not caused by you. I'm talking about countries within the EU. The warranty void message has absolutely zero consequences.
Compare it with a pc. You can reinstall Windows, install a different Windows version, install Linux and when your motherboard breaks down, it will never void your warranty because you installed different software.
So you basically have two options. You can send it directly to Samsung or send it to the store you bought it from.
In the Netherlands Samsung made an announcement that tripping Knox, flashing your phone will NEVER void your warranty. Even if you manage to brick it, they will fix it free of charge.
Hello,
I am new to samsung and knox and really I am lost with so much information specially because I have a original version.
I have a i9505 without any upgrade, so I still have the Apr 12 kernel with I understand doesn't have knox.
Can I install any custom rom?
Can I then revert back to stock? And to stock without knox?
If I install custom roms in the forum they will upgrade my kernel and knox will be installed?
What is the best approach to continue knox free?
Thanks
Custom roms or GPE roms are your best bet if you want knox free roms.
Better upgrade to the latest software and root, then install a custom rom.
If you want stock without knox, you can install a knox-free (knox has been removed by the dev) touchwiz rom.
Thanks for replying.
If I upgrade the software first it will also upgrade the kernel to a version with knox with I will not be able to remove again. Isn't correct?
If I install a custom rom will it also upgrade my kernel to a version with knox?
filtragem said:
Thanks for replying.
If I upgrade the software first it will also upgrade the kernel to a version with knox with I will not be able to remove again. Isn't correct?
If I install a custom rom will it also upgrade my kernel to a version with knox?
Click to expand...
Click to collapse
1) Yes.
2) Kernel has nothing to do with knox. Knox is in the bootloader and the rom. Custom roms do not upgrade your bootloader.
So what is the advantage of upgrading first?
Isn't best to install a custom rom as is without having knox even close to my phone?
My previous question about returning to stock was if I need to send my phone for repair (I am still on warranty) can I be stock again but remain knox free, after installing a custom rom?
Thanks and sorry for probably so basic questions
Please read this thread and gain knowledge from Chainfire (developer of CF-Auto-root, SuperSU). Many of the questions asked have answer there.
http://forum.xda-developers.com/showthread.php?p=45666586
AFAIK from reading the referenced thread only Knox-apps and libs are removed. That isn't truly Knox-free when bootloader is still holding the Knox features.
Even Chainfire hasn't been able to remove Knox.
Please give example what custom ROM is truly Knox free.
Lennyz1988 said:
Incorrect. He lives in the Netherlands. Tripping knox never voids your warranty in the Netherlands. Samsung made an official statement about it.
It depends entirely in which country you live. In the EU for example, tripping Knox can never void your consumer rights.
Click to expand...
Click to collapse
what about Asian countries?
O-T said:
Please read this thread and gain knowledge from Chainfire (developer of CF-Auto-root, SuperSU). Many of the questions asked have answer there.
http://forum.xda-developers.com/showthread.php?p=45666586
AFAIK from reading the referenced thread only Knox-apps and libs are removed. That isn't truly Knox-free when bootloader is still holding the Knox features.
Even Chainfire hasn't been able to remove Knox.
Please give example what custom ROM is truly Knox free.
Click to expand...
Click to collapse
Thanks, I will read it.
I don't know if any custom rom is knox free.
I am still knox free because I have an old bootloader, and didn't install any update.
It's possible to install a new rom without updating the bootloader?
If I install a CM rom will it install a bootloader with knox? If not, can I later reinstall a samsung rom with a bootloader without knox?
filtragem said:
Thanks, I will read it.
I don't know if any custom rom is knox free.
I am still knox free because I have an old bootloader, and didn't install any update.
It's possible to install a new rom without updating the bootloader?
If I install a CM rom will it install a bootloader with knox? If not, can I later reinstall a samsung rom with a bootloader without knox?
Click to expand...
Click to collapse
Any version CM/AOSP rom don't include bootloader or modem/non-hlos firmware as @GDReaper reply 2). Most Deodexed TouchWiz (TW-based) usually neither. Mind there can be exceptions for TW-based roms.
CWM or TWRP recovery isn't the same as bootloader hence it don't trip Knox.
I had previously CWM 6051, changed to TWRP 2840 and CM11. Updated to complete Samsung stock 501 lollipop directly from that state using PC Odin 3.07. Recovery back to stock and unrooted in one single Odin flash with preserved state Knox 0x0. Phone is GT-I9295 hardware 95% identical to GT-I9505 (some buttons +screen/camera difference).
Downgrade to Samsung TouchWiz rom with Knox-free bootloader =< MH1 when bootloader is newer (N** =kitkat or O** =lolipop) will trip Knox. Because Knox featured bootloader can't be downgraded without trip 0x1.
Updating to any Samsung TouchWiz rom with bootloader don't trip Knox.
Find version:
ADB or Terminal command: getprop ro.bootloader
It's common to press XDA Thanks Button sometimes.
Hello,
So recently, I've encountered the same Issue I've been having for a long time with any sort of Samsung device - performance. I find my device annoyingly slow. A factory reset fixes this but then the phone bogs down.
I've decided to look into potentially flashing a custom rom to see if they're far more optimised than the stock rom. The problem is, I'm a warranty freak. I like to keep my warranty intact and modify the device later on once the warranty has gone. Obviously, the Knox flag is a thing and I don't want to trip it.
When I had my One Plus 3, I had none of this and rooting/custom roms didn't bother me as it was covered in the warranty - this is a big no no with Samsung.
I'm not so much wanting to change the kernel or the bootloader or use TWRP - just install a new custom rom to hopefully get some performance gains and maybe root too.
TL;DR Is there a viable method to installing a custom rom without tripping Knox?
I am precisly on the same situation as you are
WhaleTrain said:
Hello,
So recently, I've encountered the same Issue I've been having for a long time with any sort of Samsung device - performance. I find my device annoyingly slow. A factory reset fixes this but then the phone bogs down.
I've decided to look into potentially flashing a custom rom to see if they're far more optimised than the stock rom. The problem is, I'm a warranty freak. I like to keep my warranty intact and modify the device later on once the warranty has gone. Obviously, the Knox flag is a thing and I don't want to trip it.
When I had my One Plus 3, I had none of this and rooting/custom roms didn't bother me as it was covered in the warranty - this is a big no no with Samsung.
I'm not so much wanting to change the kernel or the bootloader or use TWRP - just install a new custom rom to hopefully get some performance gains and maybe root too.
TL;DR Is there a viable method to installing a custom rom without tripping Knox?
Click to expand...
Click to collapse
If you have a exynos version then its impossible this moment to have a custom rom without having twrp, which in turn will trip Knox and may effect warranty depending what currently in
sofir786 said:
If you have a exynos version then its impossible this moment to have a custom rom without having twrp, which in turn will trip Knox and may effect warranty depending what currently in
Click to expand...
Click to collapse
Dang it, I do have the Exynos version.
So is there an exploit only applicable to the SD variant?
WhaleTrain said:
Dang it, I do have the Exynos version.
So is there an exploit only applicable to the SD variant?
Click to expand...
Click to collapse
Yep, the kind-of exploit is only on SD variant.
Although, it can be said that the exploit isn't that good as well, since you will be unable to flash custom ROM (only debloats etc IIRC).
So, they are unable to flash cutom kernel etc.
hi , what about installing custom rom with heimdall? no need for root, no need for twrp. will this triggger knox as well? does exynos/snapdragon matter in this scenario?
hey,
heimdall is only an alternative to odin, anything non samsung trips knox
Is there any way to flash an official rom without rooting to replace my actual one from my carrier? or just a way to at least change the boot screen logo?
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