Related
I'm seeing an available firmware upgrade via kies (MK7).
I'm a little skeptical to try it. Has anyone else upgraded to this firmware?
If so, have you been able to root your mega and install a custom recovery after the upgrade?
I don't want to install this firmware upgrade only to find out that afterwards that knox is on it and prevents me from rooting the phone or unlocking the bootloader.
By the way, I tried downloading the firmware without my phone connected but kies keeps force closing on me before the download is complete.
I'm afraid to connect my phone and try the download because I think it will automatically install the upgrade which I don't want to do until I'm sure I can re-root it and re-install TWRP.
Sent from my SGH-M819N using xda app-developers app
Installed Update, Re-rooted, re-installed TWRP
curgervending said:
I'm seeing an available firmware upgrade via kies (MK7).
I'm a little skeptical to try it. Has anyone else upgraded to this firmware?
If so, have you been able to root your mega and install a custom recovery after the upgrade?
I don't want to install this firmware upgrade only to find out that afterwards that knox is on it and prevents me from rooting the phone or unlocking the bootloader.
By the way, I tried downloading the firmware without my phone connected but kies keeps force closing on me before the download is complete.
I'm afraid to connect my phone and try the download because I think it will automatically install the upgrade which I don't want to do until I'm sure I can re-root it and re-install TWRP.
Sent from my SGH-M819N using xda app-developers app
Click to expand...
Click to collapse
I bit the bullet and gave it a shot. I am happy to report that the firmware upgrade was successful using Kies, I was able to root the device via the Kingo Root app, and was able to re-install TWRP. I am now on firmware M819NUVUAMK7. It is still Android version 4.2.2, and the baseband is also M819NUVUAMK7. The kernel version is dated Fri Nov 22, 2013
I installed superSU and when I ran it, it asked me if I wanted to disable knox (YES OR NO). OF COURSE I DISABLED KNOX!!
I afterward performed a nandroid backup in TWRP (the first order of business).
I am more comfortable now deleting, freezing, uninstalling system apps now because (in the event of a softbrick or bootloop) I can always revert to my nandroid backup or in extreme cases, restart all over again by re-installing the firmware via Kies, re-rooting the device via the kingo root app, and reinstalling TWRP via ODIN.
Not sure what changed from the original firmware (no change log). In any event, the device is snappy and I'm not experiencing any lags.
curgervending said:
I bit the bullet and gave it a shot. I am happy to report that the firmware upgrade was successful using Kies, I was able to root the device via the Kingo Root app, and was able to re-install TWRP. I am now on firmware M819NUVUAMK7. It is still Android version 4.2.2, and the baseband is also M819NUVUAMK7. The kernel version is dated Fri Nov 22, 2013
I installed superSU and when I ran it, it asked me if I wanted to disable knox (YES OR NO). OF COURSE I DISABLED KNOX!!
I afterward performed a nandroid backup in TWRP (the first order of business).
I am more comfortable now deleting, freezing, uninstalling system apps now because (in the event of a softbrick or bootloop) I can always revert to my nandroid backup or in extreme cases, restart all over again by re-installing the firmware via Kies, re-rooting the device via the kingo root app, and reinstalling TWRP via ODIN.
Not sure what changed from the original firmware (no change log). In any event, the device is snappy and I'm not experiencing any lags.
Click to expand...
Click to collapse
never mind I got it. I had a brain fart and was doing the process back words. I put it in download mode for the root.
hotspot mod
I am rooted with stock rom just looking for a hotspot mod for my sgh m819n been searching and searching
reesemtk60 said:
I am rooted with stock rom just looking for a hotspot mod for my sgh m819n been searching and searching
Click to expand...
Click to collapse
as far as i know. there isn't a mod for Metro's phone. there are a few custom ROM's you can use that have free tethering built in. This one is the closest to stock. http://forum.xda-developers.com/showthread.php?t=2608110
It works fine on my M819N :good:
Deodex or odex
thanks one more question how can i tell if my phone is deodex or odex
reesemtk60 said:
thanks one more question how can i tell if my phone is deodex or odex
Click to expand...
Click to collapse
well easiest way is. if its your stock ROM that came with the phone when you bought it. it is odex.
if you are rooted, you can use root explorer to go into your system/app file and see if it shows odex settings for apps
I did and had no problem rooting with kingo. What I cannot find is a way around sim lock without going through metro and that sucks.
curgervending said:
I'm seeing an available firmware upgrade via kies (MK7).
I'm a little skeptical to try it. Has anyone else upgraded to this firmware?
If so, have you been able to root your mega and install a custom recovery after the upgrade?
I don't want to install this firmware upgrade only to find out that afterwards that knox is on it and prevents me from rooting the phone or unlocking the bootloader.
By the way, I tried downloading the firmware without my phone connected but kies keeps force closing on me before the download is complete.
I'm afraid to connect my phone and try the download because I think it will automatically install the upgrade which I don't want to do until I'm sure I can re-root it and re-install TWRP.
Sent from my SGH-M819N using xda app-developers app
Click to expand...
Click to collapse
bnb25 said:
as far as i know. there isn't a mod for Metro's phone. there are a few custom ROM's you can use that have free tethering built in. This one is the closest to stock. http://forum.xda-developers.com/showthread.php?t=2608110
It works fine on my M819N :good:
Click to expand...
Click to collapse
is that rom odex of deodex because my is odex
reesemtk60 said:
is that rom odex of deodex because my is odex
Click to expand...
Click to collapse
deodex
curgervending said:
I bit the bullet and gave it a shot. I am happy to report that the firmware upgrade was successful using Kies, I was able to root the device via the Kingo Root app, and was able to re-install TWRP. I am now on firmware M819NUVUAMK7. It is still Android version 4.2.2, and the baseband is also M819NUVUAMK7. The kernel version is dated Fri Nov 22, 2013
I installed superSU and when I ran it, it asked me if I wanted to disable knox (YES OR NO). OF COURSE I DISABLED KNOX!!
I afterward performed a nandroid backup in TWRP (the first order of business).
I am more comfortable now deleting, freezing, uninstalling system apps now because (in the event of a softbrick or bootloop) I can always revert to my nandroid backup or in extreme cases, restart all over again by re-installing the firmware via Kies, re-rooting the device via the kingo root app, and reinstalling TWRP via ODIN.
Not sure what changed from the original firmware (no change log). In any event, the device is snappy and I'm not experiencing any lags.
Click to expand...
Click to collapse
Almost had a heart attack from this upgrade. My phone was already rooted when I applied the update from Kies. Everything went through fine except when it restarted, I couldn't turn on Wifi at all and I was getting an E in the cell signal. I managed to download the TWRP tar file and Kingo app to root again. I was able to restore my previous backed up image and everything was when I last left it! WHEW!
That's strange. I had no problem. wifi worked and I haven't seen E at all (only 4g lte or 4g). My signal appears to be stronger and more stable with this update than with the original firmware (most of the time I have full bars). As mentioned I don't know what changes were made (no change log around) but this is my observation so far.
Sent from my SGH-M819N using xda app-developers app
Can somebody running MK7 please boot into download mode quickly to check whether this update has a new Knox bootloader?
(Vol - , Home, Power)
Need to know if the following strings are present or not:
KNOX KERNEL LOCK:
KNOX WARRANTY VOID:
BOOTLOADER RP SWREV:
Thanks in advance.
[QUOT1.0razykipa;50763526]Can somebody running MK7 please boot into download mode quickly to check whether this update has a new Knox bootloader?
(Vol - , Home, Power)
Need to know if the following strings are present or not:
KNOX KERNEL LOCK:
KNOX WARRANTY VOID:
BOOTLOADER RP SWREV:
Thanks in advance.[/QUOTE]
This string is present on my phone in download mode:
BOOTLOADER RP SWREV: 3
I have no lines displaying anything about KNOX.
In titanium backup I froze knox 1.0, knox notification manager 1.0, and knox store 1.0.
So it appears that knox is in the rom somewhere but it's had no impact on me. I'm rooted, have twrp installed and have flashed multiple custom roms on my device (both tw and aosp based roms).
Perfect, thanks! Glad you guys got spared from the horrid new Knox bootloaders. There's a small chance that the M819 can be downgraded to the older bootloader to remove Knox entirely, but if the update came with the newest bootloader (I got stuck with it on my i527M) there is no hope at all of downgrading.
Thanks to whoever posted this and the creator of this rom
bnb25 said:
as far as i know. there isn't a mod for Metro's phone. there are a few custom ROM's you can use that have free tethering built in. This one is the closest to stock. http://forum.xda-developers.com/showthread.php?t=2608110
It works fine on my M819N :good:
Click to expand...
Click to collapse
I have the sgh-m819n metro pcs model running the mk7 firmware. This was the only rom that worked 100% for me. Im running twrp recovery,super user and free hotspot. Not to mention all the extra cool apps that it comes with. Big props to the developers of this software may your days be blessed with many more hacks.
Must be unrooted to perform update thru kies without errors..
Galaxy Mega 6.3 On Liquidsmooth rom posted this
question to everyone....
ok not sure if am in the right area to post this but. I have a metro galaxy mega 6.3 (sgh m819n) successfully rooted with kingo. what im trying to find is how to put a custom recovery like twrp and how to do it like step by step. help would be greatly appreciated. or to point me in the right direction. thanks guys.
http://forum.xda-developers.com/showthread.php?t=2608110 this is a great rom for our mega(metropcs) imho. now in order to install CWM or TWRP you simply need to download the version thats for meliusltexx which is for the i9205 version of the mega.. These Roms and procedures are compatable with the M819n(metropcs) mega
thanksss
[email protected] said:
http://forum.xda-developers.com/showthread.php?t=2608110 this is a great rom for our mega(metropcs) imho. now in order to install CWM or TWRP you simply need to download the version thats for meliusltexx which is for the i9205 version of the mega.. These Roms and procedures are compatable with the M819n(metropcs) mega
Click to expand...
Click to collapse
ok thanks and this will work correct.... also before I add a new rom on the m819n I have another question... I used to get 4LTE every where and now I get only 4G or edge after rooting with stock rom. signal apps dont do crap. is there a way to fix this... I miss my LTE data speeds. if you know how to fix or anything please point me in the right direction thanks.
Hi all, thanks in advance for any help on this. I have a few general s5 rooting questions. I'm an experienced 'rooter' having rooted and installed custom ROMs on many previous devices.
- I've ready that the s5 has an 'e-fuse' that gets 'blown' when the device is rooted. this then voids the warranty and prevents things like Fort Knox from running. I get that, and understand the risks. But, I've also read that the lollipop update will remove root. These two things seem to contradict themselves.
- on other devices I've rooted, I've then installed a custom ROM. I don't plan to do this with my s5. I haven't been able to find much written on the experience of a rooted s5 running the samsung stock ROM/firmware. I'd like to use something like xposed to change parts of the ROM (like the white background that's so pervasive in the s5 flavor of lollipop). I'm curious if anyone is running lollipop on an s5 that is rooted but running stock samsung firmware and xposed.
thanks!
Rooting won't trip Knox. Installing a custom recovery will. If you have insurance on your device tripping Knox doesn't matter, your covered anyway.
thanks!
stncldtex said:
Rooting won't trip Knox. Installing a custom recovery will. If you have insurance on your device tripping Knox doesn't matter, your covered anyway.
Click to expand...
Click to collapse
very interesting, thanks! can I run xposed/titanium backup pro/other root things without a custom recovery? all I'm really interested in is modifying Samsung-dictated things (like apps that can't be frozen and colors/elements that can't be changed) + making complete backups to the SD card. If I recall from my previous experiences, a custom recovery was the way to create a nandroid backup...but I think perhaps titanium backup pro can do that from the android front-end (with root).
I assume that I should wait to root until the tmobile s5 gets lollipop? i.e. that update will kill root?
scwtech said:
very interesting, thanks! can I run xposed/titanium backup pro/other root things without a custom recovery? all I'm really interested in is modifying Samsung-dictated things (like apps that can't be frozen and colors/elements that can't be changed) + making complete backups to the SD card. If I recall from my previous experiences, a custom recovery was the way to create a nandroid backup...but I think perhaps titanium backup pro can do that from the android front-end (with root).
I assume that I should wait to root until the tmobile s5 gets lollipop? i.e. that update will kill root?
Click to expand...
Click to collapse
Right now there are threads that show you how to get rooted lollipop on your phone without tripping Knox which basically involves downgrading the kernel so you can root with towelroot, then using mobile Odin to flash lollipop and inject root in the process. It seems people are able to do this without issues. To this point, I do not think that anyone has found an exploit for lollipop.
The problem you will run into is that Xposed still does not run on lollipop so you cannot do much in the way of customization. Most of the G900F ROMs can run on the G900T so you might poke around in those threads to pick up more info.
Hope this helps a little.
If I or anybody on XDA helps you, please hit the "Thanks" button.
scwtech said:
very interesting, thanks! can I run xposed/titanium backup pro/other root things without a custom recovery? all I'm really interested in is modifying Samsung-dictated things (like apps that can't be frozen and colors/elements that can't be changed) + making complete backups to the SD card. If I recall from my previous experiences, a custom recovery was the way to create a nandroid backup...but I think perhaps titanium backup pro can do that from the android front-end (with root).
I assume that I should wait to root until the tmobile s5 gets lollipop? i.e. that update will kill root?
Click to expand...
Click to collapse
System runtime is different. Art for lollipop compared to dalvik.. So it's not compatible as of now
Sent from my SM-G900T using XDA Free mobile app
This does not work with lollipop
---------- Post added at 07:30 PM ---------- Previous post was at 07:25 PM ----------
gspears said:
Right now there are threads that show you how to get rooted lollipop on your phone without tripping Knox which basically involves downgrading the kernel so you can root with towelroot, then using mobile Odin to flash lollipop and inject root in the process. It seems people are able to do this without issues. To this point, I do not think that anyone has found an exploit for lollipop.
The problem you will run into is that Xposed still does not run on lollipop so you cannot do much in the way of customization. Most of the G900F ROMs can run on the G900T so you might poke around in those threads to pick up more info.
Hope this helps a little.
If I or anybody on XDA helps you, please hit the "Thanks" button.
Click to expand...
Click to collapse
are you sure ? I have been able to downgrade. towelroot and flash lollipop and it boots but supersu does not work properly. root apps ask permission and supersu grants permission but the apps dont actually work
stncldtex said:
Rooting won't trip Knox. Installing a custom recovery will. If you have insurance on your device tripping Knox doesn't matter, your covered anyway.
Click to expand...
Click to collapse
I don;t know where you heard that rooting won;'t trip Knox but I beleive you are wrong about that At least I know that Flashing cf auto root - flashing recovery or flashing custom roms all trip knox. If your phone can use Towel Root - that rooting process does not trip knox - but I am not sure if Towel Root works on Lollipop or on the S5 for that matter. (I may be wrong about Towel Root - I have never used that process so I can't say for sure)
Flashing a new rom via ODIN does not trip knox. It is just like getting an UPDATE from the carrier OTA.
BUT, If you are already rooted - you already have tripped knox - flashing Lollipop will remove root - but it will not do anything to change the fact that you tripped knox on your phone already.
As far as I know everything I have said is correct - based on what I have learned thru reading - flashing and using several different samsung phones -
finally, I see a lot of people paranoid as hell about tripping knox - and I can tell you without any hesitation that I have never had a problem getting service or replacements after rooting a phone - there have been a few times back when I first started flashing roms that I had issues with my phone and I took it in and got a replacement without any issue - once I broke my screen and got a replacement then too - both times I was rooted, running custom recovery - etc.
I hope this helps you
I used towel root on NE6. You can downgrade to that via Odin and not trip knox. As far as flashing 5.0 and losing root. I came from Alliance flash Twisted lollipop and kept root. Then used Odin to flash the bootloader and modem for OB1.
Do you still have Knox 0?
How did you flash lollipop?
Pretty easily done with Odin and TWRP.
ALERT! This will void whatever warranty you have. Also, I am not at fault if your phone comes to life..... or dies.
Just need to download Odin (there are forums all over for finding the files.)
Download the TWRP recovery flash file:
http://dl.twrp.me/hltespr/twrp-2.8.6.1-hltespr-4.4.img.tar
Download Chainfire's SuperSU and copy to SD card:
http://download.chainfire.eu/696/SuperSU/UPDATE-SuperSU-v2.46.zip
Power off phone entirely.
Hold Volume down + home and power the device on, then press Volume up to confirm entering Download Mode.
Open Odin.
Connect Phone to computer.
Wait for drivers to install if not already. May need to obtain Samsung USB drivers (http://androidxda.com/download-samsung-usb-drivers)
When the box shows "COM #", click the PDA button and select the TWRP image file you downloaded. (or other recovery).
Uncheck "Auto Reset"
Click Start.
Once finished, disconnect device.
PULL BATTERY
Power into Recovery first thing first by holding Volume up + Home. (failure to do so will result in the stock recovery being flashed back on boot by the phone)
Recovery will autopatch the ROM to prevent the stock recovery from being rewritten on reboot. (or should)
From inside your recovery, flash the SuperSU update zip.
Reboot and enjoy root!
(I had to try a couple of times through trial and error to get it to stick)
Thank you.
Thank worked like a charm!
Worked first time. Thanks!
Sent from my SM-N900P using XDA Free mobile app
Does doing it this way trip Knox? I read the part about voiding your warranty. I know by having root it voids Samsung warranty.
Sent from my SM-N900P using Tapatalk 2
rbaucom said:
Does doing it this way trip Knox? I read the part about voiding your warranty. I know by having root it voids Samsung warranty.
Sent from my SM-N900P using Tapatalk 2
Click to expand...
Click to collapse
It does from what I can tell. A stock ROM flash should be able to reset Knox, it did for me, but varied results from other threads on these forums.
Greaper88 said:
It does from what I can tell. A stock ROM flash should be able to reset Knox, it did for me, but varied results from other threads on these forums.
Click to expand...
Click to collapse
Wow your the first person that I have read that was able to reset a blown an efuse American sprint note 3 Knox that way.
I'm reluctant to try it.
And thinking about it it looks like that yes it would looks like it needs a a non stock recovery.
I'll wait.
Looks like we are about to have a deodexed stock rom with root about to drop. From the other thread post in here.
http://forum.xda-developers.com/showthread.php?t=3104033
Stock rooted ROMs
Sent from my SM-N900P using Tapatalk 2
Just to clarify. Once KNOX is tripped there is no reseting it unless the insides are swapped out. When you trip KNOX you blow an e-fuse which is non reversible. However there are ways of upgrading and keeping root without tripping knox, but thats has nothing to do with this
May is Motorcycle Awarness Month. Sent from my Galaxy Note 3
elwood said:
Just to clarify. Once KNOX is tripped there is no reseting it unless the insides are swapped out. When you trip KNOX you blow an e-fuse which is non reversible. However there are ways of upgrading and keeping root without tripping knox, but thats has nothing to do with this
Click to expand...
Click to collapse
so tripping KNOX and blowing the e-fuse is bad, right? so what happens after? does the phone self destruct? and is there a way around it?
agentcelsius said:
so tripping KNOX and blowing the e-fuse is bad, right? so what happens after? does the phone self destruct? and is there a way around it?
Click to expand...
Click to collapse
It's only bad if you care about warranty. Once rooted it will show 0x1 in Download Mode. A Samsung repair Tech or Sprint Repair Tech can see that and refuse to fix your phone
By replying to this post, you acknowledge that you have read and understand the OP including all links included in OP.. Sent from my Galaxy Note 3
very good
Sprint doesn't care. It's more on Samsung go site. Never had a issue with Knox tripped with sprint.
Sent from my 0x1 Note 3...... I love tep
Got root
Worked a treat on my Note 3 SM-9005 Lollipop, took 1st time no probs.
Knox is tripped but what the hell, I've been living with the stock build up until the Lollipop update.
works fine
I recently upgraded to ok2, and used this same procedure to reroot my phone successfully.
Coming from JellyBean MJ4 firmware would it be safe to flash the pre-rooted OK2 through TWRP?
Flashed fine from NAB and seemed functional enough but I wasn't happy with the Lollipop UI. Reverted to NK4.
Thanks worked from OK2 Stock.
One question... Can I use another SU application? I was trying to use an old wireless tethering application but it is asking me if I am rooted and won't start.
Titanium backup runs fine and says I have root, as does Root Checker.
If not, does anyone have a working wireless tethering application for their Note 3?
yarmock said:
Thanks worked from OK2 Stock.
One question... Can I use another SU application? I was trying to use an old wireless tethering application but it is asking me if I am rooted and won't start.
Titanium backup runs fine and says I have root, as does Root Checker.
If not, does anyone have a working wireless tethering application for their Note 3?
Click to expand...
Click to collapse
I use Wi-Fi tether router. It's about $3 and works beautifully. (It does license check I believe)
They haven't updated their language to include lollipop, but as a general rule, whatever it says to do for kitkat will work on lollipop. Under "Configure Router," they have a link to the website with a list of configurations. Just follow that, and you should be good. One thing that I would add is to leave the "lte tether patch" unchecked.
https://play.google.com/store/apps/details?id=net.snclab.wifitetherrouter
You could try finding a newer superuser zip to flash in recovery. I do know that a couple of older ones gave that issue. I personally didn't have any luck with another supersu app, but the last time I tried a different one was on kitKat.
I have found the root directions that was posted on this site for rooting my s5 with 5.1.1. But I have 2 questions I was hoping someone could help me out with here. Please forgive me if these seem like stupid questions, as I have only rooted one phone before some years ago.
1 There is much discussion about rooting the s5 will "trip Knox". What exactly does this mean if you do root your phone? Will you have constant error messages popping up on device about Knox? Can you simply uninstall Knox after root?
2 I currently do not have the Tmobile hotspot feature activated on my s5, but I do plan on adding it on later. If I root now, will I still be able to add the Tmobile hotspot feature on my s5?
Much gratitude and appreciation ahead of time for any and all info.
Thanks,
Dave
Hi nissandave,
1) Knox, in terms of the s5, has two meanings. One in the Android OS, and one deep in the firmware of the device. You'll find in most roms that the Android Knox application has been removed, which most people prefer. "Tripping Knox" refers to modifying the firmware of the phone, where the counter in download mode goes from 0x0 to 0x1, voiding your "knox warranty." Knox is tripped when you flash when you flash a custom recovery. Root AND know can be achieved though ODIN in some cases, but you'll be stuck on a stock rooted rom (no CM, bliss, etc) Tripping this switch has no serious repercussions in terms of your phone being fully operational, but there have been VERY few reports of Samsung not performing warranty exchanges for devices with a tripped knox counter. The counter is also impossible to reset, and once tripped, will always be tripped, no matter what rom, BL, tar, or md5 you install.
2) Yes, and as a matter of fact, some roms have a workaround version installed to where you don't have to activate it through tmobile. It just works. Twisted v7 in the G900T dev sections is once of these roms.
From what I I have found and read about twisted v7, you must be running 5.0. How do I get my phone back to 5.0?
I have a Smasung S9 Plus SM-g965F with Exynos on android 10, I would need to get root but I would like to avoid to install TWRP recovery, can I do it with the stock recovery?
Thanks.
light767 said:
I have a Smasung S9 Plus SM-g965F with Exynos on android 10, I would need to get root but I would like to avoid to install TWRP recovery, can I do it with the stock recovery?
Thanks.
Click to expand...
Click to collapse
you can't use stock recovery you will need twrp
If you want to install magisk without twrp use the patch method
I have tried kingroot with no success it get stuck at 1%.
If I use magisk by patching the stock rom, then when an official samsung update comes out I can do it automatically as always?
By the way how can I check if the bootloader of my phone is unlocked ?
light767 said:
I have tried kingroot with no success it get stuck at 1%.
If I use magisk by patching the stock rom, then when an official samsung update comes out I can do it automatically as always?
By the way how can I check if the bootloader of my phone is unlocked ?
Click to expand...
Click to collapse
In develop section check to see if unlock option is there.
Download mode will tell you OEM state as well as KG/RMM state
If you modify your phone you won't get updates. Have to do manually.
Be aware rooting you phone will trip your knox. Won't be able to use knox related functions like secure folder,samsung pass, shealth etc.
spawnlives said:
In develop section check to see if unlock option is there.
Download mode will tell you OEM state as well as KG/RMM state
If you modify your phone you won't get updates. Have to do manually.
Be aware rooting you phone will trip your knox. Won't be able to use knox related functions like secure folder,samsung pass, shealth etc.
Click to expand...
Click to collapse
ACtually I need root to try to recover some files on the internal memory with some data recovery programs...after that I don't need root anymore so maybe I could go back to full stock?
light767 said:
ACtually I need root to try to recover some files on the internal memory with some data recovery programs...after that I don't need root anymore so maybe I could go back to full stock?
Click to expand...
Click to collapse
Once your modified phone knox will be tripped even when flash firmware again. There is no fix for a tripped knox.
If trying to recover lost files then using the patched method with magisk is a better option then using twrp.
I don't have much experience with recovering lost files as i have not had the need for it but i would try some non root methods first before rooting.
If you decide to root your phone you can unroot by magisk or flashing stock firmware.
Always backup your phone before doing anything.
Sadly all these program (one of the most famous is Dr. Fone) that go scanning the memory for deleted files need the privileges of root so I think that without rooting the phone it's not possible to do it anyway if I would lost the knox securty by rooting I'm not that happy too
"You may try looking into Extreme Syndicate root. It's used on the Snapdragon variants to root with a locked bootloader, so it doesn't trip Knox. I don't know if it will work on Exynos, but worth a look."
Editing doesn't work right on my phone. This won't work.