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Galaxy S5 G900F XXU1POJ1 - Need help & advice ROM/Root

Hello,
as thread title says, I need some advice from professionals here for my new Galaxy S5.
Well it's not quite new (almost 1 year) but never rooted it or flashed it, so I still got OS (original system) by Samsung.
I am a pretty amateur on such stuff. First I need some advice what to do: Rec & Root or flash custom rom?
Followng things are important to me:
The System has to be stable and fast: no lags, no crashes, no errors (I do not expect 100% stability, since not even OS is 100% stable, but it has to be at least stable as OS or even a bit more)
I need features and nice widgets (Rom must also be afordable to other apps and widgets, I 'd prefer Samsung OS widget)
I need good quality on camera (preferred OS cam software and features)
Good signal and GPS (Good and fast GPS is a MUST!!, as I use often Navigon when I travel with my car)
Good video player and galery app (Preferred Samsung OS Galery App, but video player can also be different than Samsung OS Video Player if its working fine)
What I do not do with my phone:
I do not play games
I do not read e-books
I don't understand the purpose of KNOX! Do I need it really?
Here are some details of my Smartphone:
Model no: SM-G900F
Android version: 5.0
Modem version: G900FXXU1POJ1
Kernel version: 3.4.0-6364590
Build number: LRX21T.G900FXXU1POK5
Securitysoftware version: MDF v1.1 release 4 / VPN v1.4 Release 3
I would be greatful if someone could give an advice if it is worth to flash a custom rom and if yes what rom based in what moden and kernel versions or if a simple root with recovery install is enough?.
Thanks in advance
Regards

Hi @GordonSpace.......
Most of what you said in your post leads me to believe that there are many things about the stock OS that you are happy with. That being the case, the old adage 'if it ain't broke, don't fix it' comes to mind.....meaning (for now) you might as well stay with stock. If you start flashing CM custom roms (for example) you will lose that look and feel.
On to your question about Knox.....
In a nutshell, knox is based around an 'eFuse' which will trip or blow as soon as you modify your device. This eFuse CANNOT be reset. Samsung are, in some cases, denying warranty repairs on devices where knox has been tripped.
So basically, as soon as you flash CF Root or TWRP to gain root, your warranty is void (Samsung normally provide a 2 year warranty on their devices). Tripping knox will also prevent future 'over the air' updates. So even if you unrooted your device you would be stuck with the version of the OS that you have on your device. Finally, tripping knox will prevent your device from connecting to 'business enterprise secure' servers. So if you currently use your phone on your employers network, this will no longer be possible.
If you still want to go ahead and forget about knox, this is the easiest way to gain root......
Follow exactly....
1) deactivate 'Reactivation Lock' (can be found under Security in Settings).
2) copy SuperSU zip to your device.
3) boot into download mode.
4) Odin flash TWRP 2.8.7.0 (specifically this version).
5) DO NOT allow phone to boot, (uncheck auto reboot in odin and if necessary remove the battery as soon as the TWRP flash has completed) then.....
6) boot directly into recovery. (Vol +, Power & Home button combination)
7) flash SuperSU zip.
8) boot device as normal.
TWRP 2.8.7.0 by Dees_Troy
http://forum.xda-developers.com/showthread.php?t=2727406
superSU zip v2.46 by Chainfire
http://forum.xda-developers.com/showthread.php?t=1538053
When you have root access, you can get Titanium Backup from the playstore and freeze/delete the 'bloatware' that comes pre - installed on Samsung firmwares.
That will then give you the stability of the software designed for the phone coupled with the look and feel that you like, but without the resource hogging rubbish that most people with unrooted phones have to put up with......
http://i.imgur.com/rVnFwJM.jpg

thanks
keithross39 said:
Hi @GordonSpace.......
Most of what you said in your post leads me to believe that there are many things about the stock OS that you are happy with. That being the case, the old adage 'if it ain't broke, don't fix it' comes to mind.....meaning (for now) you might as well stay with stock. If you start flashing CM custom roms (for example) you will lose that look and feel.
On to your question about Knox.....
In a nutshell, knox is based around an 'eFuse' which will trip or blow as soon as you modify your device. This eFuse CANNOT be reset. Samsung are, in some cases, denying warranty repairs on devices where knox has been tripped.
So basically, as soon as you flash CF Root or TWRP to gain root, your warranty is void (Samsung normally provide a 2 year warranty on their devices). Tripping knox will also prevent future 'over the air' updates. So even if you unrooted your device you would be stuck with the version of the OS that you have on your device. Finally, tripping knox will prevent your device from connecting to 'business enterprise secure' servers. So if you currently use your phone on your employers network, this will no longer be possible.
If you still want to go ahead and forget about knox, this is the easiest way to gain root......
Follow exactly....
1) deactivate 'Reactivation Lock' (can be found under Security in Settings).
2) copy SuperSU zip to your device.
3) boot into download mode.
4) Odin flash TWRP 2.8.7.0 (specifically this version).
5) DO NOT allow phone to boot, (uncheck auto reboot in odin and if necessary remove the battery as soon as the TWRP flash has completed) then.....
6) boot directly into recovery. (Vol +, Power & Home button combination)
7) flash SuperSU zip.
8) boot device as normal.
TWRP 2.8.7.0 by Dees_Troy
http://forum.xda-developers.com/showthread.php?t=2727406
superSU zip v2.46 by Chainfire
http://forum.xda-developers.com/showthread.php?t=1538053
When you have root access, you can get Titanium Backup from the playstore and freeze/delete the 'bloatware' that comes pre - installed on Samsung firmwares.
That will then give you the stability of the software designed for the phone coupled with the look and feel that you like, but without the resource hogging rubbish that most people with unrooted phones have to put up with......
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
Hello keithross and thank you for your response.
I use my smartphone only in private.
However it still has 11 months warranty by Samsung. Another Idea I had was to sell my Galaxy S5 as it is (OS and Knox) and buy another smartphone.
However what would be your recommendation for a new smartphone?
I was thinking about LG or HTC. But I'm not sure about to purchase a "famous" brand device or just a cheap one like Mobistel, Huawai and such.
What is a nice smartphone to have it root / flashed?
Regards
Kiri

I have about 9 months of warranty left on my phone....but I was able to root without tripping knox.....simply because I rooted before I allowed my phone to update to Lollipop (I rooted with Towelroot while running KitKat) then debloated, and customised the stock firmware.....so I have my phone as I want it, and still have knox intact.
The S5 will probably be my final Samsung smartphone, but as of this moment, I haven't given much thought as to what I'll replace it with. I'm half tempted to keep it beyond the end of it's warranty and start trying out custom roms at that point. It does everything I want it to do, so why would I need to replace it?
On the other hand, if i did replace it, I'd probably stay with one of the well known brand names.....The chances are that they'll have more dev support than the less popular makes of device....but I won't waste my money on any more flagship devices, I'll probably look at the 'upper midrange' devices as they'll (by that time) probably have similar specs to my current device (the way technology is currently advancing, they may even be superior to the S5)......
http://i.imgur.com/rVnFwJM.jpg

CyanogenMod
I decided to flash cyanogenmod snapshot
1. However I do not understand the difference between klte and kltedv rom (kltedv = vodafone. does that mean my provider has to be vodafone?)
2. TWRP or Cyanogen Recovery?
3. Do I need to install a diff Kernel version?
4. Anything I should take care about before I flash? (something special about Samsung drivers, kernel, odin etc...?)
Thx for your support.

1....In all honesty I can't answer having never flashed custom to my S5.
2....TWRP recovery over Cyanogen recovery....Every time. Cyanogen recovery is little better (if at all) than stock recovery.
3....flashing a different kernel isn't strictly speaking necessary....unless you want to be able to change processor clock speeds and voltage and apply various other specialist 'tweaks'.....
4....after rooting (but before flashing) make a backup of your EFS folder (critically important) it contains, amongst other things, your IMEI number. If this folder becomes corrupted, you're in a whole world of hurt....
Back up any personal data that you can't afford to lose....things like photos etc.
Make sure you have a copy of your current firmware available....If it all goes pear shaped, you'll possibly need it to recover your phone.
The version of Odin that has most compatibility with the S5 is v3.10.7 though other versions *should* work.
Get hold of and install the Samsung USB drivers on your pc....They come bundled with Kies available on Samsung's website. (If you install Kies, you will need to use task manager on your pc to kill the kies processes prior to flashing anything with Odin).
Use the usb cable that came with your phone when connecting it to your pc.
Make sure you've disabled your firewall and antivirus before attempting to use Odin.
If you need any more help just let me know by commenting below.....
Luck fella
http://i.imgur.com/rVnFwJM.jpg

Hey thanks mate. I rooted my device with CF autoroot via odin. I read that CM13 with Android 6 is as a stable version out now. Probably I am gonna flash it. However, I have a question with my current root of S5. Currently the wifi passwords are being save as an encrypted hex key in the wifi_supplicant.conf file. However I would like to use an app that saves and shows my wifi passwords, but unfortunately due to the encryption of S5 it's not a help for me. Any recommendations what can I do to save the real PW instead of the encrypted key?

Sorry fella....The tech aspects of your question have gone right over my head like an international Jumbo Jet....I have no idea what you're even asking about, let alone how to solve it for you. Your best bet would be to create a thread specifically for this question.....you will probably get more views for that thread than for this one.....sorry mate....
http://i.imgur.com/rVnFwJM.jpg

GordonSpace said:
Hey thanks mate. I rooted my device with CF autoroot via odin. I read that CM13 with Android 6 is as a stable version out now. Probably I am gonna flash it. However, I have a question with my current root of S5. Currently the wifi passwords are being save as an encrypted hex key in the wifi_supplicant.conf file. However I would like to use an app that saves and shows my wifi passwords, but unfortunately due to the encryption of S5 it's not a help for me. Any recommendations what can I do to save the real PW instead of the encrypted key?
Click to expand...
Click to collapse
You should already know the passwords if they are your routers/APs

I don't know my passwords. The thing is, that sometimes we go to some cafés and such where I have saved the PW of the router, but sitting with friends some of them do not have it to connect with wifi. Thats why I am asking if there is a possibility to view the passwords I saved in my wifi connections (not as a hex key but the true passwords). Anyway.. thx for help. I guess thats Samsung OS. Hope it won't be with CM13 like this.

New to Samsung devices, but just need to make sure

Hello all,
This is my first Samsung device, the Galaxy S7 Edge Dual sim (SM-G935FD) bought from UAE.
I used to install TWRP and root every android phone I had before, so I am still not sure whether to root this one. I already have the files required for rooting, but I noticed that there are 2 ways of rooting:
1. Using Odin to install TWRP and then from there install SuperSU.
2. CF-Auto-Root.
What is/are the difference(s) in both methods?
My other question is: I read that rooting will trip Knox, and there is NO WAY to get it back to normal even flashing the original ROM. Is that the case?
One last thing, I am now stuck in the download mode (turned off the phone, pressed "Volume down", "Home" and "Power"), I did that just to check the info on the top left (model and warranty void...) but I cannot seem to restart the phone even by pressing the power button for more than 20 seconds, how can I turn the phone off then back on?
Thank you
*****EDIT*****
Regarding my last question (stuck in Download mode), pressing the same combination got me back to start the phone normally

Cf-AutoRoot will root your phone but then you will have to put your recovery on also usually flashed with Odin anyway or an app if it's working for the Galaxy S7... Twrp plus superuser will root and you'll have the recovery installed.... They both will trip your official (0x0) knox and make it (0x1) custom.... You can always go back to stock rom and get OTA updates but your knox will remain at 0x1......this is supposed to void the warranty but depending on where you live it won't make a difference.... Also if you want to flash roms and mods and kernels just use the twrp method and if you just want root and to be able to use root permission apps use the Cf-AutoRoot.... As of right now I haven't rooted because there aren't to many Roms available... I'm sure I will cause I miss titanium backup and the ability to get rid of all the bloat ware (especially Facebook & Microsoft ****).... The phone runs great without root and battery is excellent.... The last reason I was waiting was Samsung pay won't work with tripped Knox counter.... I live in the US but have the international 935F... So it doesn't look like this variant will support Pay anytime soon.... Probably gonna root when development picks up a little....
*edit*... Always have a stock rom just in case saved to your computer just in case... That would of saved me lots of freak outs and headaches years ago... Now it's the first thing I do before Rooting or flashing anything to my phone
Galaxy S7 edge

Kjc99 said:
Cf-AutoRoot will root your phone but then you will have to put your recovery on also usually flashed with Odin anyway or an app if it's working for the Galaxy S7... Twrp plus superuser will root and you'll have the recovery installed.... They both will trip your official (0x0) knox and make it (0x1) custom.... You can always go back to stock rom and get OTA updates but your knox will remain at 0x1......this is supposed to void the warranty but depending on where you live it won't make a difference.... Also if you want to flash roms and mods and kernels just use the twrp method and if you just want root and to be able to use root permission apps use the Cf-AutoRoot
Galaxy S7 edge
Click to expand...
Click to collapse
Thank you for the detailed reply.
I made a research yesterday on Knox (as I said, this is my first Samsung device), and I just wanted to make sure that I understood things properly.
So now after reading, tripping Knox will disable Samsung Pay (I do not have it in my country) so that is not going to make any difference. But, what about paying using the fingerprint sensor in Google Play, will it stop working if Knox is tripped? I also use the fingerprint sensor to login to my mobile banking app (instead of typing the password every time I want to login), will that stop too? I guess not but again just to be sure.
Thanks a lot once again.

I know when I rooted my S6 all the fingerprint stuff still worked so I dont think it will make a difference... Im not sure with the S7 edge but I would think it would still work cause all of those require a typed password before you use your fingerprint(1st setup only) Then use your fingerprint there after... .. Doesn't have anything to do with Knox
Galaxy S7 edge

yep, it all still works. just Samsung pay & private mode.

Knox after going back to stock

Hi!
I'm trying to go back to stock to try knox features like secure folder. I have restored my device (Spain unbranded) with SmartSwitch and flashing firmware through Odin.
My problem is that Knox and Secure folder says that it can not work because I have installed unauthorized software. SafetyNet passes, on download mode, I see all official, and Apps (like banking apps) works fine without detecting root.
I have warranty void bit = 1. This means that, even flashing again stock firmware, I will never be able to use Knox? I'm worried about using root cloacks methods because of something stops working (for example due an update) I will unable to access to secure folder.
Thanks a lot in advance!

runtime_Err0r said:
Hi!
I'm trying to go back to stock to try knox features like secure folder. I have restored my device (Spain unbranded) with SmartSwitch and flashing firmware through Odin.
My problem is that Knox and Secure folder says that it can not work because I have installed unauthorized software. SafetyNet passes, on download mode, I see all official, and Apps (like banking apps) works fine without detecting root.
I have warranty void bit = 1. This means that, even flashing again stock firmware, I will never be able to use Knox? I'm worried about using root cloacks methods because of something stops working (for example due an update) I will unable to access to secure folder.
Thanks a lot in advance!
Click to expand...
Click to collapse
As your knox is tripped already i.e. showing 0×1 so you will never be able to use knox related security features as well as samaung pay on your phone..When knox is tripped once while in rooting or trying any unauthorised software installation, it will never been reset to initial state either by trying to install stock firmware again..

DroidHackeR said:
As your knox is tripped already i.e. showing 0×1 so you will never be able to use knox related security features as well as samaung pay on your phone..When knox is tripped once while in rooting or trying any unauthorised software installation, it will never been reset to initial state either by trying to install stock firmware again..
Click to expand...
Click to collapse
Ok thanks a lot for the info!

runtime_Err0r said:
Ok thanks a lot for the info!
Click to expand...
Click to collapse
https://forum.xda-developers.com/s7-edge/how-to/guide-secure-folder-samsung-knox-s-t3560079
^^That thread has a tutorial on how to get knox features working if your knox was tripped however I don't think it will as secure as it would be if used the knox features without knox being tripped.

runtime_Err0r said:
Ok thanks a lot for the info!
Click to expand...
Click to collapse
I can recommend you flashing ambasadii's ROM. I'm currently using it with the latest SuperStock Kernel and have secure folder fully working. You'll have to download the full 10.1 ROM and the 10.2 OTA which is about 500mb

[SOLVED]Security Notice after Root (J730G)

Hi, let me just get this straight.
I installed TWRP on my J730G and then installed SuperSU afterwards. Tried the available custom roms I can download from here, but unfortunately, there was none that's stable and not buggy for the J730G-DS at the moment.
I had to flash stock firmware from odin and then just installed TWRP and SuperSU alone.
Now, I'm always getting this "Security Notice" notification
(screenshot attached) telling me there was unauthorized actions have been detected and I need to restart.
Restarted my phone several times but Im still getting the notification.
Can anyone help me get rid of this please? Thanks!
Device is a SM-J730G/DS

deejaydevic said:
Hi, let me just get this straight.
I installed TWRP on my J730G and then installed SuperSU afterwards. Tried the available custom roms I can download from here, but unfortunately, there was none that's stable and not buggy for the J730G-DS at the moment.
I had to flash stock firmware from odin and then just installed TWRP and SuperSU alone.
Now, I'm always getting this "Security Notice" notification
(screenshot attached) telling me there was unauthorized actions have been detected and I need to restart.
Restarted my phone several times but Im still getting the notification.
Can anyone help me get rid of this please? Thanks!
Device is a SM-J730G/DS
Click to expand...
Click to collapse
Can you factory reset your phone?

Greight said:
Can you factory reset your phone?
Click to expand...
Click to collapse
Yeah I tried but same thing happens.
Had to reflash stock firmware via odin and the warning is now gone. Thanks bud!

deejaydevic said:
Yeah I tried but same thing happens.
Had to reflash stock firmware via odin and the warning is now gone. Thanks bud!
Click to expand...
Click to collapse
Correction: The warning appears after rooting. Therefore, after reflashing stock firmware via odin , the warning disappeared but it came back when I rooted the phone.
Managed to get rid of it with the help of @h.nocturna 's guide from the Galaxy S7 Edge: https://forum.xda-developers.com/tmobile-s7-edge/how-to/guide-post-root-common-bugs-fixes-t3427600
Bug #3: Notification warning that system has been modified.
Fix #1: Disable com.samsung.android.securitylogagent & com.tmobile.pr.adapt using your favorite package disabler. This will hide all notifications associated with this app as well as the root check that you might have encountered.
Fix #2: This fix requires Xposed. You can follow the instructions to install Xposed HERE.
Then install the Xposed module NotifyClean, activate the module, and reboot the phone. You will then use this app to block the notification under the package com.samsung.android.securitylogagent by clicking on the package so that it is highlighted red. The notification should disappear!
Note: This app can also be used to hide the icon for WiFi Calling if it's annoying you. You can still use the WiFi calling function while hiding the notification.
Click to expand...
Click to collapse

J7 pro warrenty void 0x1 in download mode
I have j7 pro .. i install twrp in it A!!
Then i flash firmware via odin ..
Status is official..
But samsung pay, s health says unauthorised modifications detects..
In download mode -warrenty void 0×1 ??
Please tell me how i fix this problem i want my warrenty back and samsung pay ?
---------- Post added at 09:35 AM ---------- Previous post was at 09:31 AM ----------
I have j7 pro .. i install twrp in it A!!*
Then i flash firmware via odin ..
Status is official..
But samsung pay, s health says unauthorised modifications detects..
In download mode -warrenty void 0×1*
Please tell me how i fix this problem i want my warrenty back and samsung pay*

I think in new samsung devices all roms and root developers say in the steps now you void your warrenty
So you are responsble for what you doing here
Sorry to say that
All you can do try to flash full firmware of your country may be fix samsung pay bot 100% sure

@anurag hacker
since your knox become 0x1, your warranty is void and it effect you based knox app like securefolder, sbrowser private mode, samsung health and also your samsung pay. If you want use the samsung pay you can try search in xda thread about mod samsung pay that can use with rooted device.
Edit: you can try use custom kernel that have fake knox.

There's a simple trick to get s health working

This is the reason I won't root any Samsung phones, unless they're outdated.

JasonS. said:
This is the reason I won't root any Samsung phones, unless they're outdated.
Click to expand...
Click to collapse
Root is far more valuable than some silly secure folder or Samsung pay. Which in any case can all be re-enabled with the right mods.
If you want something secure, store it in the cloud.

If you don't mind about modifying the ROM, then delete this Security Log Agent. It's the part of the Knox suite by the way.
Honestly I wouldn't implement Knox on ANY Samsung phone except for some really serious corporate devices. It's useless. As if Google's partly ugly security patches were not enough, we're also having Knox on our heads.

Unauthorized actions have been detected. Restart your phone to undo any unauthorized

Hi everyone,
Straight to the point, I bought Samsung S7 Edge second-hand and I get trouble in lagging and always show notification of "Unauthorized actions have been detected. Restart your phone to undo any unauthorized changes."
This problems also tangled me when I'm using Samsung Health...:crying::crying::crying:
As basic situation, I know it had been root and unroot before I bought this phone.
Is anyone can help me to get rid off?:crying::crying:

samsung health, android pay and secure folder won't work on device that has root or have been rooted. firstly, to get rid of the annoying notification, install titanium backup,grant root rights if you are still rooted, locate the apk "security log agent and freeze it. If not, install latest twrp and root with magisk or supersu, just search online how to do so. lastly , to get rid of the lagging and notification . flash latest stock rom via odin and everything would be fine ..just remember that your knox is tripped forever so don't expect samsung health would work after removing root or getting back to latest stock ..hope this helps and good luck

CrankyOutlaw said:
samsung health, android pay and secure folder won't work on device that has root or have been rooted. firstly, to get rid of the annoying notification, install titanium backup,grant root rights if you are still rooted, locate the apk "security log agent and freeze it. If not, install latest twrp and root with magisk or supersu, just search online how to do so. lastly , to get rid of the lagging and notification . flash latest stock rom via odin and everything would be fine ..just remember that your knox is tripped forever so don't expect samsung health would work after removing root or getting back to latest stock ..hope this helps and good luck
Click to expand...
Click to collapse
Hi, I finally solve my problem by Upgrade my phone Android version. And my phone status now show OFFICIAL and all Samsung Official Application are able to use now!

RichardGuyz said:
Hi, I finally solve my problem by Upgrade my phone Android version. And my phone status now show OFFICIAL and all Samsung Official Application are able to use now!
Click to expand...
Click to collapse
You gotta be kidding me. All Samsung Official apps are working you say? Samsung Pay, Health etc?