Develop Bugs

[Q] Information needed after being inactive for a long time.

So after being inactive for months I came across stuff about "KNOX"(Knox free etc) and MIJ MJ5 stuff and that it looks like its hard to downgrade or something like that, can anyone explain me what exactly KNOX is and what MIJ is?
I assume MIJ and MJ5 stuff is the firmware version.. and roms using those tags in their title are based of them? Or can I only flash those when I have that firmware?
I actually didn't even have any problem yet.. but I've been running official MIUI for the past months anyway..

If you search at forum little bit you'll find all your answers
Sent from my GT-N7100 using Tapatalk 2

vagsvag said:
If you search at forum little bit you'll find all your answers
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Very helpful... in fact I already did that which is why I posted this question in the first place.

DeadSix17 said:
Very helpful... in fact I already did that which is why I posted this question in the first place.
Click to expand...
Click to collapse
Sure, maybe you have to search better I suppose.
OK no problem you need help you are saying if I understood well, knox is new security function for secure phone's communication for company use etc, it is using many levels of security starting from bootloader and goes to system etc etc Google it for more information, also knox checking your system for rooting etc and voids your warranty (look at note 3 forum), is difficult or impossible to remove it, but if you have already install it drketan made a patch for n7100 which is removing successfully knox from your bootloader.
http://forum.xda-developers.com/showthread.php?t=2500823
Follow the instructions and knox finished from bootloader, after this
you can downgrade to 4.1.2 use triangle away flash stock f/w restore warranty etc
Little bit more searching noone hurts
Sent from my GT-N7100 using Tapatalk 2

vagsvag said:
Sure, maybe you have to search better I suppose.
OK no problem you need help you are saying if I understood well, knox is new security function for secure phone's communication for company use etc, it is using many levels of security starting from bootloader and goes to system etc etc Google it for more information, also knox checking your system for rooting etc and voids your warranty (look at note 3 forum), is difficult or impossible to remove it, but if you have already install it drketan made a patch for n7100 which is removing successfully knox from your bootloader.
http://forum.xda-developers.com/showthread.php?t=2500823
Follow the instructions and knox finished from bootloader, after this
you can downgrade to 4.1.2 use triangle away flash stock f/w restore warranty etc
Little bit more searching noone hurts
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
So if knox is installed, i will still be able to root, but its somehow setting a value which manufacturers can check and see if I rooted or what? (I also don't believe I have Knox im not sure, i updated to 4.3.x once via odin but only used that to fix my EFS and then go back to CM10.2 and or MIUI (depends on my mood))

You can see if you have or not at download mode volume down +home+power at last line, it is writing knox something.... . Knox is present at mj5 second leak 4.3, if you have it you need to use drketan's 2 patches to remove it before downgrade.
Are you ok now? Your questions answered?
Sent from my GT-N7100 using Tapatalk 2

vagsvag said:
You can see if you have or not at download mode volume down +home+power at last line, it is writing knox something.... . Knox is present at mj5 second leak 4.3, if you have it you need to use drketan's 2 patches to remove it before downgrade.
Are you ok now? Your questions answered?
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Yep thanks.

DeadSix17 said:
Yep thanks.
Click to expand...
Click to collapse
Why don't you hit the "thanks" button beyond the posts of the guy who helped you?
I tought it is even mentioned in your signature one should....

tetakpatak said:
Why don't you hit the "thanks" button beyond the posts of the guy who helped you?
I tought it is even mentioned in your signature one should....
Click to expand...
Click to collapse
Guess I should rephrase it then?

Newbie help on 4.2 to 4.3 tmo (KNOX)

Hello,
Fairly new to android and rooting. Only rooted one phone (Dad's gs2 bc it had firmware and camera issues) but I was successful.
Using a virgin Galaxy S4 on tmobile since april only mild battery issues. Was waiting for uodate and shocked that we only get jellybean instead of 4.4 kitkat??!!
So question:
Upgrade and lock bc of KNOX and just wait?
OR
Dont upgrade and root and add kitkat now?
Is it worth the upgrade?
Galaxy s4 on Tapatalk

KNOX doesn't lock your phone. Its builtin to the 4.3/4.4 bootloader and if you root or flash roms, it trips the flag and voids your warranty. That is all. If you don't care about the warranty, flash away. You can root your current firmware and flash the 4.3 or 4.4 roms that are on thr forums that have KNOX removed. I'm on 4.2.2 and Ive upgraded using flashable roms and came back without having to worry about KNOX
Sent from my SGH-M919 using XDA Premium 4 mobile app

Thanks, do you happen to have a link to a How to?
Galaxy s4 on Tapatalk

95gsrturbo said:
Thanks, do you happen to have a link to a How to?
Galaxy s4 on Tapatalk
Click to expand...
Click to collapse
That would be handy, as bouncing around the threads on the update and the initial ROMs being developed leaves a lot of questions and there are a number of soft bricked devices because of it.
Apparently, if you want to stay totally away from knox, you cannot simply flash the new radio as-is, as without having loaded the new knox bootloader, a number of functions will not work. And if you just flash the new OTA based ROMs, you can have problems also,
Work is being done to de-knox the radio, but I don't know where that stands. Nor am I sure if when that is done if you will be able to flash and use the new OTA ROMs and also revert to 4.2.2 without having to first revert to previous radio.
So again, a guide on living with knox would be helpful.

gaww said:
That would be handy, as bouncing around the threads on the update and the initial ROMs being developed leaves a lot of questions and there are a number of soft bricked devices because of it.
Apparently, if you want to stay totally away from knox, you cannot simply flash the new radio as-is, as without having loaded the new knox bootloader, a number of functions will not work. And if you just flash the new OTA based ROMs, you can have problems also,
Work is being done to de-knox the radio, but I don't know where that stands. Nor am I sure if when that is done if you will be able to flash and use the new OTA ROMs and also revert to 4.2.2 without having to first revert to previous radio.
So again, a guide on living with knox would be helpful.
Click to expand...
Click to collapse
I'd like to know whether, if I upgrade to 4.3 using Kies (I'm on rooted 4.2 stock), I can re-root and remove Knox (as I've done in 4.2). I know I can re-root, and permanently void the warranty, but I don't know if Knox is removable in 4.3.

ubizmo said:
I'd like to know whether, if I upgrade to 4.3 using Kies (I'm on rooted 4.2 stock), I can re-root and remove Knox (as I've done in 4.2). I know I can re-root, and permanently void the warranty, but I don't know if Knox is removable in 4.3.
Click to expand...
Click to collapse
If you upgrade to 4.3 via Kies you will trip KNOX if you change ANYTHING. Once it's tripped, you can't clear it.
The only way to avoid tripping the KNOX flag is to use a rom with KNOX removed

Can someone clarify something for me. Does having the 4.3 bootloader and knox 0x1 prevent you from flashing CM/GE/AOSP/Non-TW4.3+ ROMs? I've been staying on the old bootloader and am considering just updating. If the knox 0x1 only affects warranty and not flashing of any ROM I want, then I don't care if I have 0x1

95gsrturbo said:
Thanks, do you happen to have a link to a How to?
Galaxy s4 on Tapatalk
Click to expand...
Click to collapse
Use the thanks button
Synergy510 said:
Can someone clarify something for me. Does having the 4.3 bootloader and knox 0x1 prevent you from flashing CM/GE/AOSP/Non-TW4.3+ ROMs? I've been staying on the old bootloader and am considering just updating. If the knox 0x1 only affects warranty and not flashing of any ROM I want, then I don't care if I have 0x1
Click to expand...
Click to collapse
Only voids warranty afaik. Why not stick with the old bootloader and just flash new roms without the new knox bootloader? Best of both worlds.
Sent from my SGH-M919 using XDA Premium 4 mobile app

xdapowerapps said:
Only voids warranty afaik. Why not stick with the old bootloader and just flash new roms without the new knox bootloader? Best of both worlds.
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I was considering it only because I thought the new bootloader made a difference. Thanks for the reply

Synergy510 said:
I was considering it only because I thought the new bootloader made a difference. Thanks for the reply
Click to expand...
Click to collapse
Np. In my honest opinion, this new bootloader is just another middle finger to the consumers under the false pretense of solidifying security measures for the few coorporations that have actual need for KNOX. This is Samsungs way of avoiding responsibility for failed hardware. Okay enough ranting lol. New bootloader serves only as a way to inform Samsung or the store you are returning to that your warranty is void.
Sent from my SGH-M919 using XDA Premium 4 mobile app
---------- Post added at 12:17 PM ---------- Previous post was at 12:15 PM ----------
He put it in a better way:
Skipjacks said:
As for upgrading to 4.3 you do not need the 4.3 bootloader and you don't want it. It has a way to show that you've previously rooted the device that cannot (as of yet) be reset.
Just flash 4.3 ROMs in recovery. Anything you find in the development section will work fine. But if you want Wifi Calling you HAVE to use a T Mobile specific Touch Wiz ROM. You cannot use just any Touch Wiz ROM or any AOSP ROM at all.
If you want the T Mobile Wifi CAlling on the stock 4.3 rom and don't want all the other BS that comes with it, use this guide...
http://forum.xda-developers.com/showthread.php?t=2546024
Click to expand...
Click to collapse
Sent from my SGH-M919 using XDA Premium 4 mobile app

xdapowerapps said:
Np. In my honest opinion, this new bootloader is just another middle finger to the consumers under the false pretense of solidifying security measures for the few coorporations that have actual need for KNOX. This is Samsungs way of avoiding responsibility for failed hardware. Okay enough ranting lol. New bootloader serves only as a way to inform Samsung or the store you are returning to that your warranty is void.
Click to expand...
Click to collapse
Umm, many people with real jobs have security requirements for their mobile devices. KNOX has nothing to do with Samsung attempting to avoid responsibility for hardware failures. They have nothing to do with each other. Where did you get this BS from?
I guess it is the interwebs so people can make up anything they want.

xdapowerapps said:
Use the thanks button
"Thanks button"???
:good:???
Click to expand...
Click to collapse

jcbofkc said:
Umm, many people with real jobs have security requirements for their mobile devices. KNOX has nothing to do with Samsung attempting to avoid responsibility for hardware failures. They have nothing to do with each other. Where did you get this BS from?
I guess it is the interwebs so people can make up anything they want.
Click to expand...
Click to collapse
I specifically stated in my first sentence that it is my personal opinion. I also stated that corporations do use KNOX but not to the extent that everyone needs to have it pushed out to them without a choice. Quit getting your panties in a bunch and learn to read.

xdapowerapps said:
I specifically stated in my first sentence that it is my personal opinion. I also stated that corporauselesso use KNOX but not to the extent that everyone needs to have it pushed out to them without a choice. because toing your panties in a bunch and learn to read.
Click to expand...
Click to collapse
My panties are not in a bunch. KNOX has nothing to do with the samsung warranty in the case of hardware failure. Your opinion is useless if it is based on garbage. Make sure you know what you are talking about instead of making stuff up when giving advice.

jcbofkc said:
My panties are not in a bunch. KNOX has nothing to do with the samsung warranty in the case of hardware failure. Your opinion is useless if it is based on garbage. Make sure you know what you are talking about instead of making stuff up when giving advice.
Click to expand...
Click to collapse
You're not reading anything I wrote and are living in your own bubble. Your arrogance precedes you. I've stated the facts and I've stated my opinion, if you can't connect two and two, you shouldn't be responding in the thread. Now kindly be quiet and bring the thread back to topic.

Question for devs regarding MK2 and Knox

Is anyone working currently working on a solution to this catastrophe? I'm one of the unfortunate individuals that happened to acquire an S4 with this build preinstalled. Needless to say, I'm pissed.I'm curious as to if it's even possible to bypass Knox. I'd love to liberate my Galaxy from Touch Wiz and install a the official GE ROM.

I'm more interested in the updated LTE modem that seems to be tied into the 4.3 knoxed up bootloader since I'm still on 4.2.2.

aka_word said:
Is anyone working currently working on a solution to this catastrophe? I'm one of the unfortunate individuals that happened to acquire an S4 with this build preinstalled. Needless to say, I'm pissed.I'm curious as to if it's even possible to bypass Knox. I'd love to liberate my Galaxy from Touch Wiz and install a the official GE ROM.
Click to expand...
Click to collapse
there is nothing to solve. you may install CWM/custom ROM as normal.

dcd1182 said:
there is nothing to solve. you may install CWM/custom ROM as normal.
Click to expand...
Click to collapse
If you care about your warranty this may trip a counter "KNOX WARRANTY VOID 0X1" or something like that. But anyway, the part about voiding you warranty is a theory. In some cases I've read where a device was repaired in store with a simple re-flash of stock firmware, resetting the counter. Other cases have reported sending them in to either be fixed for free or sent a bill for tripping the counter. So the choice is your, just be informed of the concequences before you make your decision. This phone is damn near $700.

omnifarious said:
If you care about your warranty this may trip a counter "KNOX WARRANTY VOID 0X1" or something like that. But anyway, the part about voiding you warranty is a theory. In some cases I've read where a device was repaired in store with a simple re-flash of stock firmware, resetting the counter. Other cases have reported sending them in to either be fixed for free or sent a bill for tripping the counter. So the choice is your, just be informed of the concequences before you make your decision. This phone is damn near $700.
Click to expand...
Click to collapse
Exactly. I don't know about anyone else, but I'd prefer to keep my warranty intact as well as the resell value. By the time I'm ready to sell it, I'm sure people will start caring about having the manufacturer's warranty still intact.

dcd1182 said:
there is nothing to solve. you may install CWM/custom ROM as normal.
Click to expand...
Click to collapse
The latest build prevents users from gaining root access.

What build ? CM?
My S4 Is Insane
DEVIANT DEVELOPMENT MEMBER

aka_word said:
The latest build prevents users from gaining root access.
Click to expand...
Click to collapse
I was able to run CF-Autoroot after taking the update via Kies. I haven't installed Knox but I am on the MK2 bootloader. I don't believe it prevents root access...

aka_word said:
The latest build prevents users from gaining root access.
Click to expand...
Click to collapse
totally irrelevant.

re: gaining root
aka_word said:
The latest build prevents users from gaining root access.
Click to expand...
Click to collapse
I just wonder where you read that rumor. LOL
You must be google'ing way too much!

Misterjunky said:
I just wonder where you read that rumor. LOL
You must be google'ing way too much!
Click to expand...
Click to collapse
This is drawn from my own experience.

[HOW TO][ROOT] T-MOBILE GS4 NB4 [KNOX 0x0]

ROOT [KNOX 0x0]
Did you update to NB4 and are on the verge of rooting but really do not want to trip that eFuse?
Well thanks to @geohot and his wonderful work of art over at: http://forum.xda-developers.com/showthread.php?t=2783157 we now have a
KNOX 0x0 root ability!
Step 1: Go to www.towelroot.com on your Galaxy S4 Device from T-Mobile and click the Logo in the middle (Lambda or upside down Y)
Step 2: Install the app (Google will try and halt you from installing just click next)
Step 3: Once App is installed tripple click on "Welcome to TowelRoot" Header.
Step 4: Once Text Box pops up enter the values "1337 0 1 7380 4 0" close keyboard and then press "Make it Ra1n"
There should be about a 10 Second wait and a dialog should pop up and say you are successfully rooted!
**Check your KNOX by going into download mode!
So shoot on over to his thread and give him a big thumbs up or even better... Donate!:good:
- I do not take any resposibility if your devices decides to melt in your hand like a hershey kiss on a 100 degree day nor if your late to work because your alarm clock stops working! Neither does geohot im sure. So beware you do this at your own risk.

Mine

Worked for me!!

Worked for me. Big thanks for modstring!

Dude....it's awesome to see @geohot again at work. He's an awesome guy with extreme skills. Good to see he moved away from video game console hacking to mobile phones. :victory:
If only there was a way to find a way to reverse the trip counter on already rooted phones.

brian117 said:
Dude....it's awesome to see @geohot again at work. He's an awesome guy with extreme skills. Good to see he moved away from video game console hacking to mobile phones. :victory:
Click to expand...
Click to collapse
I first knew about him from jailbreaking iOS and unlocking the first iPhone, he was wasn't just into game console but it is good to see him with android, that dude is a beast!

serio22 said:
I first knew about him from jailbreaking iOS and unlocking the first iPhone, he was wasn't just into game console but it is good to see him with android, that dude is a beast!
Click to expand...
Click to collapse
Yeah that too. He will always be known for jailbreaking iOS, and hacking the PS3 and getting "sued". He's had a crazy life . He even attempted working on hacking the Nintendo 3DS. But he might've moved away from that. All I know is, geohot is awesome and extremely knowledgable. Good to see him advancing with more technology.

Towelroot is awesome and all, but if you can find a way to flash recovery without tripping Knox let me know.

Does this work with the AT&T version of the S4?

Caferacer said:
Does this work with the AT&T version of the S4?
Click to expand...
Click to collapse
It should

add another success! first time i tried towel root all it did was reboot my phone . this worked.! verified with root checker and Knox is 0x0 !

serio22 said:
It should
Click to expand...
Click to collapse
Confirmed working for NB1 build brand new AT&T S4. The new build was giving me hassle since she just got her phone. Thanks!

wanted to see how far i could push it.
installed SU and let it disable Knox, ok , knox 0x0 still good booted n=into download mode and confirmed
installed rom manager and flashed clockwork knox 0x1 so don't flash any custom recovery. it will trip Knox.
hope that helps anyone who actually needs a knox to be 0x0. i didn't

merchant2112 said:
wanted to see how far i could push it.
installed SU and let it disable Knox, ok , knox 0x0 still good booted n=into download mode and confirmed
installed rom manager and flashed clockwork knox 0x1 so don't flash any custom recovery. it will trip Knox.
hope that helps anyone who actually needs a knox to be 0x0. i didn't
Click to expand...
Click to collapse
Thank you guys it works!!
I'm just wondering though now that I have root, can I use some app to start removing bloatware from my phone safely? (Including KNOX, I'm talking about the app not the efuse) can I disable things like Carrier IQ without tripping the Knox fuse too now?
Thanks again! just trying to get an idea of what I can do without tripping the flag as I do want to have warranty on this guy for 6 more months. (last 2 replacements were defective and had to use warranty, still got 6 months left)

mansilla.jb said:
Thank you guys it works!!
I'm just wondering though now that I have root, can I use some app to start removing bloatware from my phone safely? (Including KNOX, I'm talking about the app not the efuse) can I disable things like Carrier IQ without tripping the Knox fuse too now?
Thanks again! just trying to get an idea of what I can do without tripping the flag as I do want to have warranty on this guy for 6 more months. (last 2 replacements were defective and had to use warranty, still got 6 months left)
Click to expand...
Click to collapse
Km not sure about Carrier IQ, but you can't remove KNOX (it's at the system level, basically); but you can remove bloatware.
In regards to your warranty, as long as your device is bootable, you can get back to a stock state, with KNOX not tripped (there's various guides, though the S4 forums aren't the most organized, so it might take some digging).
Sent from my Galaxy S4 using XDA Free mobile app

Does this work on encrypted device?

Safe?
Hello Guys,
Works great and I did it on my device. But my Avast Antivirus detect it as a Trojan. It's ok if it had detected as a hack tool or something like that, but as a trojan.... That got me scary... So I went to virustotal.com and got same results from other AVs...
Is it a safe apk or it's just an false positive? What you guys have to say about that? My device is safe to sensitive information as Bank app, email, etc?

lsmmello said:
Hello Guys,
Works great and I did it on my device. But my Avast Antivirus detect it as a Trojan. It's ok if it had detected as a hack tool or something like that, but as a trojan.... That got me scary... So I went to virustotal.com and got same results from other AVs...
Is it a safe apk or it's just an false positive? What you guys have to say about that? My device is safe to sensitive information as Bank app, email, etc?
Click to expand...
Click to collapse
It's safe.. Look up what a trojan is.. I also accidently pressed the thanks button so you got a free one

Thanks!
serio22 said:
It's safe.. Look up what a trojan is.. I also accidently pressed the thanks button so you got a free one
Click to expand...
Click to collapse
So, thank you twice!

This did not work for me on NB4 - phone just reboots. Any suggestions?

a5 knox thread

Hi, I am looking for a thread on xda that is about knox and finding a way to reset the flash counter on the a5, so that I would be able to follow progression on that topic. I have been looking but I couldn't find one. Are developers working on that?

Sn0w0nS said:
Hi, I am looking for a thread on xda that is about knox and finding a way to reset the flash counter on the a5, so that I would be able to follow progression on that topic. I have been looking but I couldn't find one. Are developers working on that?
Click to expand...
Click to collapse
Knox can NOT be changed back in any way.
You can only replace the board to get knox back

MaDaLiNoSt said:
Knox can NOT be changed back in any way.
You can only replace the board to get knox back
Click to expand...
Click to collapse
Does that mean that it is certain that developers will never be able to find a way to reset knox like they did before on older galaxy's?

Sn0w0nS said:
Does that mean that it is certain that developers will never be able to find a way to reset knox like they did before on older galaxy's?
Click to expand...
Click to collapse
Do a research about the new knox. It.s an e-fuse. Once that bit is burn on the emmc, it can.t be erased

However there might be at some point a kernel which spoof Knox. This won't reset warrznty but you'll at least br able to use things like pay

Ok, I have been looking for knox and e fuse and I totally understand now. To bad it is done this way.