Develop Bugs

[Q] Questions about the new 4.3 ROM: downgrading, KNOX and others

Hi there, I'm about to flash the brand new official 4.3 ROM in my Note 2 N7105. I've read some concerns about KNOX and it changing the bootloader and making impossible to downgrade, it that true?
If I flash this new 4.3, can't I reflash the 4.1.2 ROM using a nandroid backup, or even with Odin?
What about using 3rd party ROMs, would I still be able to do it as I do now? Any risk of EFS / IMEI problems? I am currently using both the 4.1.2 and CM 10.3.1 (I alternate frequently using nandroid backups with CWM), don't know if it's worth the risk of upgrading to the official 4.3 right now before knowing this and if CF-AutoRoot can root the 4.3 ROM.
Note: I don't care about warranty and KNOX at all, if those are the only issues.

It is fairly simple - if you flash 4.3 with Knox, you can't ever again flash any other custom ROM without loosing Knox. What it means is that, once you flash anything else, Knox will burn something inside your chip - and this is irreversible - and it will know your device has been modded. And you can never again use Knox.
If you don't care about Knox - this is no issue....

dalanik said:
It is fairly simple - if you flash 4.3 with Knox, you can't ever again flash any other custom ROM without loosing Knox. What it means is that, once you flash anything else, Knox will burn something inside your chip - and this is irreversible - and it will know your device has been modded. And you can never again use Knox.
If you don't care about Knox - this is no issue....
Click to expand...
Click to collapse
I flashed with Odin and lost WiFi. I tried to install a patch from another thread, but it seems that doesn't work on for the N7105, as I lost my IMEI and the phone doesn't get signal. I have an EFS backup, gonna try downgrading to 4.1.2 and restore the EFS (it doesn't allow me to do it on 4.3, it says that "a dangerous action has been blocked").

Help, I can't get my IMEI back, it seems that the EFS backup was useless Have I bricked my phone? I think it hasn't really lost the IMEI, it just forgot how to search for it, because I installed the wifi correction .bin file for the n7100. Any help?

good questions.. waiting for replys?

topaloglu321 said:
good questions.. waiting for replys?
Click to expand...
Click to collapse
Managed it:
http://forum.xda-developers.com/showthread.php?t=2533822
Now I will stay away from the 4.3 ROM, because I can't make WiFi work with it.

How to Install a custom rom on stock 4.3 with knox

Hi All,
May you please advise how can I install a custom rom after I have already updated my Note 2 using OTA to 4.3.
I have not yet downloaded knox and enabled it.
I am basically confused how to root and install custom recovery ?
My phone is just 1 month old - If I root and install a custom rom and would like to install stock sometime in future to gain back official status and claim warranty, would I be able to do that ?
Many thanks !
Nisha

nishantmnit said:
Hi All,
May you please advise how can I install a custom rom after I have already updated my Note 2 using OTA to 4.3.
I have not yet downloaded knox and enabled it.
I am basically confused how to root and install custom recovery ?
My phone is just 1 month old - If I root and install a custom rom and would like to install stock sometime in future to gain back official status and claim warranty, would I be able to do that ?
Many thanks !
Nisha
Click to expand...
Click to collapse
Your warranty will get void if you plan to flash any custom ROM after downloading 4.3
To root/flash custom ROMs, do the needful over your current ROM, which I suppose might be 4.1.x
Have a look: http://omegadroid.co/wanted-knox-void-warranty-0x1/

ngr.hd said:
Your warranty will get void if you plan to flash any custom ROM after downloading 4.3
To root/flash custom ROMs, do the needful over your current ROM, which I suppose might be 4.1.x
Have a look: http://omegadroid.co/wanted-knox-void-warranty-0x1/
Click to expand...
Click to collapse
Thanks for the reply. Problem is, I have already upgraded to stock 4.3 using OTA update.
I am not very much liking the update because of missing note 3 features.
And now am trying to find out a way using which I can flash DN3 rom with the possibilities of rolling back to stock 4.3 to regain the warranty in worst case scenario.
Please help.
Thanks,
Nisha

nishantmnit said:
Thanks for the reply. Problem is, I have already upgraded to stock 4.3 using OTA update.
I am not very much liking the update because of missing note 3 features.
And now am trying to find out a way using which I can flash DN3 rom with the possibilities of rolling back to stock 4.3 to regain the warranty in worst case scenario.
Please help.
Thanks,
Nisha
Click to expand...
Click to collapse
You need to follow Dr. Ketan's guide.
First in order to get N3 features on 4.3 Stock you need to flash Dr. Ketan's custom Rom for note 2 4.3 MI6
Install custom recovery by flashing one from odin.
Root your phone using supersu 1.65. Flash it (but no need, dr. Ketan's rom is prerooted)
GIVE A THANKS BUTTON IF I HELPED PLEASE
Sent from my GT-N7100 using XDA Premium 4 mobile app

yup
nishantmnit said:
Hi All,
May you please advise how can I install a custom rom after I have already updated my Note 2 using OTA to 4.3.
I have not yet downloaded knox and enabled it.
I am basically confused how to root and install custom recovery ?
My phone is just 1 month old - If I root and install a custom rom and would like to install stock sometime in future to gain back official status and claim warranty, would I be able to do that ?
Many thanks !
Nisha
Click to expand...
Click to collapse
Yup you can root, but say bye to warranty, just flash custom recovery then rom and done...... i dont know if you can go back to stock after flashing CwR hehe ...... XD .......

[Q] Samsung galaxy s3 i747M unroot on 4.3

Hi, im new on XDA but have quite a lot experience whit phone.
I tryed to root my samsaung galaxy s3 from Rogers (same as att) i747M whit CF-Auto root (im on android 4.3 jellybean).
I did it my phone is still working. I didnt flash a new recovery or anything.
Now i woudlike to remove root finally.
*the counter of the new Knox is set now to 0X1 but personnally i dont really mind.
The problem is that i woudlike to remove the root. I dont whant to downgrade i like 4.3 jellybean. (Anyway Att s3 cant be downgraded it will result to a soft brick)
I dont know how to remove the root and i woudlike to learn how to do it on my Samsung galaxy s3.
Thanks
(i was wondering about if i download the 4.3 stock Rom and i flash it will odin will it brick even if its on the same bootloader? because thats not downgrading...)
Thank you in advance for helping me out fast!

killer0123 said:
Hi, im new on XDA but have quite a lot experience whit phone.
I tryed to root my samsaung galaxy s3 from Rogers (same as att) i747M whit CF-Auto root ( su in the app itself4.3 jellybean).
I did it my phone is still working. I didnt flash a new recovery or anything.
Now i woudlike to remove root finally.
*the counter of the new Knox is set now to 0X1 but personnally i dont really mind.
The problem is that i woudlike to remove the root. I dont whant to downgrade i like 4.3 jellybean. (Anyway Att s3 cant be downgraded it will result to a soft brick)
I dont know how to remove the root and i woudlike to learn how to do it on my Samsung galaxy s3.
Thanks
(i was wondering about if i download the 4.3 stock Rom and i flash it will odin will it brick even if its on the same bootloader? because thats not downgrading...)
Thank you in advance for helping me out fast!
Click to expand...
Click to collapse
Im having the same problem. Cant downgrade to any version. Can't unroot phone, I have yhe the s3 i747 also on 4.3. Im kind.of.sad nobody has.replied to this. I tried unrooting removing.supersu via inapp permanent unroot option, then using rootbrowser to delete su files from system/bin and system/xbin. ( there wasnt any), root checker said my phone didny have root access.all I wanna do is upgrade to thr newest version lol then root that. Why does it.habe ti be so hard?

Nico de Pontiac said:
Im having the same problem. Cant downgrade to any version. Can't unroot phone, I have yhe the s3 i747 also on 4.3. Im kind.of.sad nobody has.replied to this. I tried unrooting removing.supersu via inapp permanent unroot option, then using rootbrowser to delete su files from system/bin and system/xbin. ( there wasnt any), root checker said my phone didny have root access.all I wanna do is upgrade to thr newest version lol then root that. Why does it.habe ti be so hard?
Click to expand...
Click to collapse
This will get you to the 4.4.2 stock update: http://forum.xda-developers.com/showthread.php?t=2789917
It depends on you having a custom recovery. It does provide a way to go back to the stock recovery once you are updated. I believe the same devolper has also posted the most recent update to NJ1 in a separate thread.

wifi not working now, and didnt update.
dawgdoc said:
This will get you to the 4.4.2 stock update: http://forum.xda-developers.com/showthread.php?t=2789917
It depends on you having a custom recovery. It does provide a way to go back to the stock recovery once you are updated. I believe the same devolper has also posted the most recent update to NJ1 in a separate thread.
Click to expand...
Click to collapse
it let me flash from mjb or whatever to the ne4. all that did was **** up my wifi. switch it to on and it just goes right back off. plus the files for the stock recoveries were spam.

Nico de Pontiac said:
it let me flash from mjb or whatever to the ne4. all that did was **** up my wifi. switch it to on and it just goes right back off. plus the files for the stock recoveries were spam.
Click to expand...
Click to collapse
Check that your bootloader and modem/baseband are matching in version number, this seems to be important in some of the newer kernels. If they do not match, flash the modem to correspond to the bootloader. If they are matching you may want to reinstall the modem on the off chance that it flashed incorrectly the first time.
Since you didn't mention any issues with calling or data I take it that the correct APNs are installed.
I don't understand why you call the stock recovery files spam. The link at 4. leads directly to the androidfilehost page to download the file. The other is an attachment to directly download the file from xda. To each his own.

Verify steps on root and ROM -Tmo S4

I have been away from Android and recently made the switch back (Smart Move!). I bought a Galaxy Note 2 and rooted it and tried some custom ROMs. In the process I tripped Knox and then I went back and read up on it and understand how it happened. I sold that phone and got a S4 with 4.2.2 stock on it. I want to root and move up to a 4.3 custom ROM but I want to make sure I have the steps down as far was not dealing with knox again.
1. Root the phone (I used Chainfire Auto Root previously on the Note 2)
2. To move up to 4.3, I need to find a custom rom without knox and flash.
3. If I ever want to go back to stock 4.2.2, I should be able to if I never install knox (this is the piece that I really want to verify).
Tripping knox isn't a showstopper by any means but I would like to get back to the original stock firmware if I wanted to so I asking if the steps above are accurate. From what I have read, I think if I stay away from custom roms with knox, I should be okay.
Thanks for you help!

You're steps are accurate. Just don't flash the 4.3 bootloader.
Sent from my SGH-M919 using XDA Premium 4 mobile app

jgc70 said:
1. Root the phone
2. Install TWRP recovery (my preferred recovery, but you need a custom one)
3. To move up to 4.3, I need to find a custom rom without knox and flash. I highly suggest the wicked rom. It's a modified stock 4.3 rom
4. If I ever want to go back to stock 4.2, never upgrade the bobootloader
Click to expand...
Click to collapse
I added bother step but yes you're on the right track

Thanks for the info. Phone has been rooted and custom recovery installed. I am going to try out Wicked too.

How to have custom recovery

Hey guys its been a week since i bought the note 2 and i rooted it. But i cannot find how to flash a custom recovery tutorial anywhere. I am on jellybean 4.1 and the rest of the details (firmware etc) can be found on the screenshots attached..
I would highly appreciate if someone can send me a link to the guide for flashing.. thanks a lot in advance
Sent from my GT-N7100 using XDA Premium 4 mobile app

Just simply flash via Odin
You can choose CWM, Philz touch or TWRP

RazaVakil7995 said:
Hey guys its been a week since i bought the note 2 and i rooted it. But i cannot find how to flash a custom recovery tutorial anywhere. I am on jellybean 4.1 and the rest of the details (firmware etc) can be found on the screenshots attached..
I would highly appreciate if someone can send me a link to the guide for flashing.. thanks a lot in advance
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You got two options either root your phone while being on 4.1.2 or upgrade to official Indian 4.4.2 and then root it.Ofcourse once you root your current 4.1.2 you can try custom 4.4 ROM and if you don't like it you can go back to 4.1.2 or flash a 4.3 custom ROM. To root your 4.1.2 rom read this guide.If you decide to upgrade to 4.4.2 Indian firmware download it from here.
To flash the 4.4.2 ROM on your phone download it from the above link(there are 3 links where the ROM is uploaded) ,use any of the links and download the zip file,extract it you'll get a tar file,put your phone into download mode ,open odin v3.09 on pc and flash the official stock rom by checking the AP tab on odin.You can find tutorials on youtube on how to use odin to flash official stock firmware so just look them up if you need it.Once you flash stock ROM you can root your phone via this guide.
Okay so now things to remember.If you root your 4.1.2 ROM and want to try 4.3 or 4.4 custom ROM you need to flash MJ5 bootloader in order to have working wifi.Bootloader is flashed directly on your mother board and it cannot be downgraded only be upgraded.MJ5 is the last 4.3 bootloader which is KNOX free(what is knox ,blah blah,you can read about it on google).Advantage of MJ5 is you can try 4.1.2/4.3/4.4.2 rom and your warranty and knox remain intact but if you upgrade to official 4.3 or 4.4.2 ROM you'll be on knoxed bootlooader which means you cannot downgrade to 4.1.2 anymore plus rooting a phone with knoxed bootloader will trigger knox 0x1 and your warranty if any will be void (no way yet to reset Knox).So if you have warranty on your phone then my advise is root your 4.1.2 Rom,download any 4.3 or 4.4.2 custom ROM,you wont have wifi working then flash the MJ5 bootloader from here and read this post on how to flash bootloader.
I know it's a lot of info to you but your best guide is self reading from the above links i hooked you up with.Also read comments from people cause that's how I learned I read and read a lot before i jumped the rooting bandwagon cause wanted to make sure i don't brick my phone. Ofcourse whenever in doubt STOP RIGHT THERE and ask us.Dont attempt things that you are not sure of.Good luck.

Thanks for the help
singhpratik87 said:
You got two options either root your phone while being on 4.1.2 or upgrade to official Indian 4.4.2 and then root it.Ofcourse once you root your current 4.1.2 you can try custom 4.4 ROM and if you don't like it you can go back to 4.1.2 or flash a 4.3 custom ROM. To root your 4.1.2 rom read this guide.If you decide to upgrade to 4.4.2 Indian firmware download it from here.
To flash the 4.4.2 ROM on your phone download it from the above link(there are 3 links where the ROM is uploaded) ,use any of the links and download the zip file,extract it you'll get a tar file,put your phone into download mode ,open odin v3.09 on pc and flash the official stock rom by checking the AP tab on odin.You can find tutorials on youtube on how to use odin to flash official stock firmware so just look them up if you need it.Once you flash stock ROM you can root your phone via this guide.
Okay so now things to remember.If you root your 4.1.2 ROM and want to try 4.3 or 4.4 custom ROM you need to flash MJ5 bootloader in order to have working wifi.Bootloader is flashed directly on your mother board and it cannot be downgraded only be upgraded.MJ5 is the last 4.3 bootloader which is KNOX free(what is knox ,blah blah,you can read about it on google).Advantage of MJ5 is you can try 4.1.2/4.3/4.4.2 rom and your warranty and knox remain intact but if you upgrade to official 4.3 or 4.4.2 ROM you'll be on knoxed bootlooader which means you cannot downgrade to 4.1.2 anymore plus rooting a phone with knoxed bootloader will trigger knox 0x1 and your warranty if any will be void (no way yet to reset Knox).So if you have warranty on your phone then my advise is root your 4.1.2 Rom,download any 4.3 or 4.4.2 custom ROM,you wont have wifi working then flash the MJ5 bootloader from here and read this post on how to flash bootloader.
I know it's a lot of info to you but your best guide is self reading from the above links i hooked you up with.Also read comments from people cause that's how I learned I read and read a lot before i jumped the rooting bandwagon cause wanted to make sure i don't brick my phone. Ofcourse whenever in doubt STOP RIGHT THERE and ask us.Dont attempt things that you are not sure of.Good luck.
Click to expand...
Click to collapse
Wow that's a lot of info you provided there, thanks. I am not new to rooting as far it goes I have rooted and flashed many roms on my galaxy s advance and my micromax A87 before that. But note 2 was a flagship device so there are many complications that come along which got me confused. As for now, I have my rooted 4.1.2 stock rom along with cwm recovery flashed via rom manager. I am planning to flash either DN3 or the Xperia Z-ized rom. So my question is: do I have to flash mj5 bootloader to flash DN3 and xperia z-ized or can I directly flash it from cwm (with factory reset and necessary wipes of course)?
BTW, I have heard that knox is a security application that prohibits rooting on samsung phones. It also had a reward for $18k for those who can bypass the knox on the S5 and root it. If I am right, then I think I am fairly acquainted to knox.
Once again, thanks a lot for helping! Appreciate it

RazaVakil7995 said:
Wow that's a lot of info you provided there, thanks. I am not new to rooting as far it goes I have rooted and flashed many roms on my galaxy s advance and my micromax A87 before that. But note 2 was a flagship device so there are many complications that come along which got me confused. As for now, I have my rooted 4.1.2 stock rom along with cwm recovery flashed via rom manager. I am planning to flash either DN3 or the Xperia Z-ized rom. So my question is: do I have to flash mj5 bootloader to flash DN3 and xperia z-ized or can I directly flash it from cwm (with factory reset and necessary wipes of course)?
BTW, I have heard that knox is a security application that prohibits rooting on samsung phones. It also had a reward for $18k for those who can bypass the knox on the S5 and root it. If I am right, then I think I am fairly acquainted to knox.
Once again, thanks a lot for helping! Appreciate it
Click to expand...
Click to collapse
Since you are on stock 4.1.2 MJ5 is required for wifi to work.i learned 2 weeks ago that even mj5 is not required as previously thought by us at least not while flashing 4.4.2 TW rom.When you flash 4.4.2 custom ROM you wont have wifi working,then flash custom kernel like agni or nadia and wifi works flawlessly so one doesn't need to flash mj5 bootloader.I am not sure if this would work on 4.3 ROM you could try xperia z'd 4.3 custom ROM then flash a compatible 4.3 custom kernel and see if wifi works if it does you're set.This was new to most of us so I asked the person who told me about this how did he manage to do this and he told me apparently custom kernels have some sort of wifi drivers on them so when we flash custom kernels on 4.4.2 ROM wifi works but it wont work on stock kernel unless you upgrade to MJ5 and on stock kernel.MJ5 is safe to flash anyways since its knox free bootloader.
Actually 4.3 and 4.4.2 note 2 phones and others got knox on them but we found a way to disable knox after rooting our phone SuperSu disables it but knox is triggered to 0x1 and there's no way to reset KNOX since it's concerned with the motherboard of the phone which is the heart and soul of out note 2.So that bounty you might be talking about how to reset it perhaps.Even if they succeed in reversing it doesn't necessarily mean it would work on note 3 or note 2 cause of the phones being of different hardware .i don't know the technicalities of this.

singhpratik87 said:
Since you are on stock 4.1.2 MJ5 is required for wifi to work.i learned 2 weeks ago that even mj5 is not required as previously thought by us at least not while flashing 4.4.2 TW rom.When you flash 4.4.2 custom ROM you wont have wifi working,then flash custom kernel like agni or nadia and wifi works flawlessly so one doesn't need to flash mj5 bootloader.I am not sure if this would work on 4.3 ROM you could try xperia z'd 4.3 custom ROM then flash a compatible 4.3 custom kernel and see if wifi works if it does you're set.This was new to most of us so I asked the person who told me about this how did he manage to do this and he told me apparently custom kernels have some sort of wifi drivers on them so when we flash custom kernels on 4.4.2 ROM wifi works but it wont work on stock kernel unless you upgrade to MJ5 and on stock kernel.MJ5 is safe to flash anyways since its knox free bootloader.
Actually 4.3 and 4.4.2 note 2 phones and others got knox on them but we found a way to disable knox after rooting our phone SuperSu disables it but knox is triggered to 0x1 and there's no way to reset KNOX since it's concerned with the motherboard of the phone which is the heart and soul of out note 2.So that bounty you might be talking about how to reset it perhaps.Even if they succeed in reversing it doesn't necessarily mean it would work on note 3 or note 2 cause of the phones being of different hardware .i don't know the technicalities of this.
Click to expand...
Click to collapse
How do you know all this man??

RazaVakil7995 said:
How do you know all this man??
Click to expand...
Click to collapse
Lurking around in xda and reading as much as I can and participating in discussions related to Knox.I was clueless to all this Knox and how it works.My previous phone was HTC HD2 so samsung note II was the first serious smartphone I owned so just wanted to be extra careful that I don't end up bricking my device so read and read and asked questions.