I'm no on android 4.3.1 liquidsmooth custom rom and I need to downgrade back to android 4.1, but I can't without bricking my device apparently because of Samsung Knox. Therefore I'm asking if I can flash another 4.3 rom without knox on my i747m s3 that will allow me to downgrade.
NOte: I need to downgrade because I'm getting very weak wifi reception, I want to see if downgrading back to the stock rom will change anything, any otehr suggestions for tackling this issue would be appreciated, thank you.
Simax8 said:
I'm no on android 4.3.1 liquidsmooth custom rom and I need to downgrade back to android 4.1, but I can't without bricking my device apparently because of Samsung Knox. Therefore I'm asking if I can flash another 4.3 rom without knox on my i747m s3 that will allow me to downgrade.
NOte: I need to downgrade because I'm getting very weak wifi reception, I want to see if downgrading back to the stock rom will change anything, any otehr suggestions for tackling this issue would be appreciated, thank you.
Click to expand...
Click to collapse
hello,
simply flash kriEv's knox-free, pre-rooted stock ROM --> http://forum.xda-developers.com/showthread.php?t=2558311
you may still run into trouble if you try to flash anything based below 4.3.. I would just bite the bullet and upgrade to 442, maybe slimkat or cm11
[Q&A] Samsung Galaxy Mega 2 SM-G750A AT&T Root. Plus Hotspot unlocked for Cricket or
Q&A for Samsung Galaxy Mega 2 SM-G750A AT&T Root. Plus Hotspot unlocked for Cricket or other
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.
Before posting, please use the forum search and read through the discussion thread for Samsung Galaxy Mega 2 SM-G750A AT&T Root. Plus Hotspot unlocked for Cricket or other. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.
Thanks for understanding and for helping to keep XDA neat and tidy!
Mega 2 as well.
KingRoot did work for me. I am looking for a custom ROM now, but there is like NO support from anywhere for this device. I hope we can get a developer onboard and get something built for these devices.
have a thread on android forums for this as well, you can do a search for Mega 2 and its the only thread on the mega 2 forum, screenname on there is Matt Cajon as well.
Maybe we can make something happen
Custom Recovery?
Any luck with a working custom recovery?
running backup before running the app.
Thank you shockazulu for your post on the mega2 root.
I'm new to this and have been looking and searching for the best way to do it and most have refurred the king root app.I do have a questions .
Do I still need to do a backup of the phone before running the app.?
Is this a preferment root as I noted your phone reverting back to it's original state?
Noticed there is a newer version of the king root app now 4.5 and would it be better to run that app ?
Thanks Again and I'm sure I'll have another question before I get into doing this !
Chris
I manage to root the galaxy mega 2 on the newer baseband G750AUCU3AOFA. Since for some reason you can't root it on that build. but with the modem flash it worked
Matt Cajon said:
KingRoot did work for me. I am looking for a custom ROM now, but there is like NO support from anywhere for this device. I hope we can get a developer onboard and get something built for these devices.
have a thread on android forums for this as well, you can do a search for Mega 2 and its the only thread on the mega 2 forum, screenname on there is Matt Cajon as well.
Maybe we can make something happen
Click to expand...
Click to collapse
The problem with the att version of the mega 2 is that the bootloader is locked. So there is no way to use a custom bootloader like Clockwork. Without a custom bootloader we can't load/flash roms.
But what we can do is........
We can use a program called Flashfire. Flashfire is a way to flash things on our phone without having to use the bootloader.
We can also use exposed launcher and wanam exposed. This is the tools we can use to make customise our stock rom.
One of us could customize a rom and create a step by step for how they created it. If it is a stable setup then instead of others flashing that custom ROM, they would fallow the steps to create the same custom ROM.
whats with the vague answer ...
if you rooted it on OFA how did you do it?!?!
WHAT MODEM?! please elaborate I need to know asap..
Any of you had luck on installing a custom recovery for it? i am trying to help another forum member who have this S750A .
I recently ported a custom TWRP for my device which is a SM-J105B. Found out that TWRP was easier to port/works better on it than CWM for instance. Maybe this is the case for you guys device, i want to help out.
i know this is a 1 year old post but if any were successful please share the knowledge cheers from Brasil!
Pindroid is trying to help me i have a samsung galaxy mega 2 sm-g750a also it said "unlocked" on the ad when i got it but anyways we are looking for the original 4.4.4 kitkat firmware and can't seem to find it anywhere but the one we did find that has repair in its title has never worked as far as flashing with it goes. I have lollipop right now and it works fine but it hasn't solved the problem im having with my IMEI so we are trying a downgrade to see if that helps. Anyways thanks for any help
I have a sm- g750a on 5.1.1 too ,tried kingo root ,kingoroot, with a no go ,roots but then just bootloops then I gotta reflash 5.1.1 firmware via Odin ...I've looked and looked just the run around on how to root this device,I really wanna root this phone love the screen and it's my go to phone for work ,if anyone could figure this out that would be awesome
I get the same thing...Boot looping after root..Firmware is 5.1.1..Anyone have thoughts?Thanks.
Surgeman said:
I get the same thing...Boot looping after root..Firmware is 5.1.1..Anyone have thoughts?Thanks.
Click to expand...
Click to collapse
Thoughts on how to root or how to fix the bootloop?
Piridroid said:
Thoughts on how to root or how to fix the bootloop?
Click to expand...
Click to collapse
The root is no problem..It's the boot loop is the biggest problem.And factory wiping it doesn't fix the issue.
Surgeman said:
The root is no problem..It's the boot loop is the biggest problem.And factory wiping it doesn't fix the issue.
Click to expand...
Click to collapse
As mrodriguezangel said on page 1:
"I have a sm- g750a on 5.1.1 too ,tried kingo root ,kingoroot, with a no go ,roots but then just bootloops THEN I GOTTA REFLASH 5.1.1 FIRMWARE VIA ODIN .."
Did you manage to root Mega 2 5.1.1 without issues? To remove the bootloop you will have to reflash your stock firmware via ODIN software.
According to the official AT&T page (is yours at&t?) :
https://www.att.com/devicehowto/tut..._KB425949?make=Samsung&model=GalaxyMega2G750A
Latest Kitkat is July 7, 2015
Android version: 4.4.4
Baseband version: G750AUCU3AOFA
Kernel Version: 3.4.39-2550495 [email protected]#1
Build number: KTU84P.G750AUCU3AOFA
Latest Lollipop is September 2, 2015
Android version: 5.1.1
Baseband version: G750AUCU3BOH4
Kernel Version: 3.4.39-5559233 [email protected]#1
Build number: LMY47X.G750AUCU3BOH4
Googled "G750AUCU3BOH4" and found http://www.mediafire.com/file/hd72qrsaeoob9tl/G750AUCU3BOH4+5.1.1.rar , try to know more about it, but should work ok.
How did you root?
Piridroid said:
As mrodriguezangel said on page 1:
"I have a sm- g750a on 5.1.1 too ,tried kingo root ,kingoroot, with a no go ,roots but then just bootloops THEN I GOTTA REFLASH 5.1.1 FIRMWARE VIA ODIN .."
Did you manage to root Mega 2 5.1.1 without issues? To remove the bootloop you will have to reflash your stock firmware via ODIN software.
According to the official AT&T page (is yours at&t?) :
https://www.att.com/devicehowto/tut..._KB425949?make=Samsung&model=GalaxyMega2G750A
Latest Kitkat is July 7, 2015
Android version: 4.4.4
Baseband version: G750AUCU3AOFA
Kernel Version: 3.4.39-2550495 [email protected]#1
Build number: KTU84P.G750AUCU3AOFA
Latest Lollipop is September 2, 2015
Android version: 5.1.1
Baseband version: G750AUCU3BOH4
Kernel Version: 3.4.39-5559233 [email protected]#1
Build number: LMY47X.G750AUCU3BOH4
Googled "G750AUCU3BOH4" and found http://www.mediafire.com/file/hd72qrsaeoob9tl/G750AUCU3BOH4+5.1.1.rar , try to know more about it, but should work ok.
How did you root?
Click to expand...
Click to collapse
I have rooted it 2 different ways...Kingo and Super SU..Once rebooted it will boot loop over and over.It has something to do with the Knox itself.I've been working on a way to disable it but it's enterprise and it doesn't have an option under security.And yes it's SG-M750A AT&T Mega 2.
Surgeman said:
I have rooted it 2 different ways...Kingo and Super SU..Once rebooted it will boot loop over and over.It has something to do with the Knox itself.I've been working on a way to disable it but it's enterprise and it doesn't have an option under security.And yes it's SG-M750A AT&T Mega 2.
Click to expand...
Click to collapse
mmm Ok. How did you root with SuperSU ? CF-auto? recovery? supersu-me ?
Is there an option called "Unlock by OEM" under "Developer Options"? Enable it.
Another thing, according to this tutorial for the SG-M750F:
https://androidmtk.com/root-samsung-galaxy-mega-2-sm-g750f
This F version which should be similar is only rootable with a specific firmware. Maybe thats the case for the A version aswell.
Also, next time you have root, before you reboot you should make a backup of your EFS and Modem folders. You can do that via ADB, EFS tools or using some apks for instance.
Check dlo2000 post on first page, he had kitkat installed, rooted with Kingo and let the the phone OTA update to lollipop... somehow his IMEI number got corrupted and now he cannot use his phone to make calls. Thats why backing up your EFS partition is important, your IMEI is there.
So from what i understood, you did know stock firmware flash would remove bootloops, but you currently dont know how to root without creating a bootloop, is that correct? cheers
---------- Post added at 01:48 AM ---------- Previous post was at 01:37 AM ----------
Surgeman said:
I have rooted it 2 different ways...Kingo and Super SU..Once rebooted it will boot loop over and over.It has something to do with the Knox itself.I've been working on a way to disable it but it's enterprise and it doesn't have an option under security.And yes it's SG-M750A AT&T Mega 2.
Click to expand...
Click to collapse
Enterprise... maybe it has extra security turned on, idk.
How do you know it has to do with KNOX, did it show some knox message? Chainfire's supersu sometimes asks to let it disable knox. Which version of supersu did you use?
Piridroid said:
mmm Ok. How did you root with SuperSU ? CF-auto? recovery? supersu-me ?
Is there an option called "Unlock by OEM" under "Developer Options"? Enable it.
Another thing, according to this tutorial for the SG-M750F:
https://androidmtk.com/root-samsung-galaxy-mega-2-sm-g750f
This F version which should be similar is only rootable with a specific firmware. Maybe thats the case for the A version aswell.
Also, next time you have root, before you reboot you should make a backup of your EFS and Modem folders. You can do that via ADB, EFS tools or using some apks for instance.
Check dlo2000 post on first page, he had kitkat installed, rooted with Kingo and let the the phone OTA update to lollipop... somehow his IMEI number got corrupted and now he cannot use his phone to make calls. Thats why backing up your EFS partition is important, your IMEI is there.
So from what i understood, you did know stock firmware flash would remove bootloops, but you currently dont know how to root without creating a bootloop, is that correct? cheers
---------- Post added at 01:48 AM ---------- Previous post was at 01:37 AM ----------
Enterprise... maybe it has extra security turned on, idk.
How do you know it has to do with KNOX, did it show some knox message? Chainfire's supersu sometimes asks to let it disable knox. Which version of supersu did you use?
Click to expand...
Click to collapse
I used Kingo the first time,and even used Super SU me to remove Kingo...AT&T devices doesn't require any unlock for cricket because AT&T owns them lock stock and barrel.You're getting the same service just bottle necked on the 4G end of it at 8 mbs and it's unlimited.I have been reading through other post in some other forums,and the SE for Android pops up about security settings and ask to reboot to restore them.Once you do..the boot loop begins.I have searched the error out also...and it pertains to knox.I have even tried to remove knox before rebooting..No go..still boot loops...Myself and another user have the same issue,and we've been trying to figure a work around and nothing yet.Some other information I have read that with the Lollipop update it adds the enterprise knox that may cause issues.But it doesn't hurt to try...Oh I forgot to mention...I made a efs backup before I started the journey but good looking out..Thanks..
Surgeman said:
I used Kingo the first time,and even used Super SU me to remove Kingo...AT&T devices doesn't require any unlock for cricket because AT&T owns them lock stock and barrel.You're getting the same service just bottle necked on the 4G end of it at 8 mbs and it's unlimited.I have been reading through other post in some other forums,and the SE for Android pops up about security settings and ask to reboot to restore them.Once you do..the boot loop begins.I have searched the error out also...and it pertains to knox.I have even tried to remove knox before rebooting..No go..still boot loops...Myself and another user have the same issue,and we've been trying to figure a work around and nothing yet.Some other information I have read that with the Lollipop update it adds the enterprise knox that may cause issues.But it doesn't hurt to try...Oh I forgot to mention...I made a efs backup before I started the journey but good looking out..Thanks..
Click to expand...
Click to collapse
OK, so it was supersu-me and the issue has to do with SElinux right.
dude i own a Galaxy J1 mini and i was the "first person" to root the B/F/M/Y versions (custom recovery method, based on an obscure version created for the H version) , this device is also a 5.1.1 android, SElinux activated from factory. The website which provided the root for the H version vanished a couple of weeks after they annouced it... lucky to find it, i just had to read easy tutorials here in XDA to learn how to properly port the TWRP for my specific model B and later on for the other J1 mini variants on ppl demand.
What i find out from my experience is, if i was going to wait for some expert to find how to root it, i would still be waiting... keep trying!
I would personally as a noob, try to find out how to disable KNOX or SElinux . There are probably commands which can be run as root user to disable them, for instance "selinux set permissive" (i know it exists, something like that, maybe). There are apps which claim to do those stuff, just search playstore for "knox" or "selinux" and you will see. In case none does the job automatically, search how to do it manually.
In my case, the TWRP+SuperSU method worked just fine, looks definitive. BUT, before i found this, the only other real option was a chinese app called 360root. None other root app works on my device so far. But its root was unstable and not compatible with all apps, thats why i searched for a permanent root.
THis 360root only worked on the older firmware (also 5.1.1, but older samsung release).
My opinion is... in case you dont mind using kitkat (android 4.4) i would flash the oldest firmware and try to root it with Kingo (which owners of variants of the MEGA 2 claim is the only tool capable, it even turns knox off in some cases). Remembering that if this worked, you would have to disable automatic firmware updates. Letting a rooted device to auto-update usually creates more trouble.
If kitkat is a no go for ya and you want to stick with lollipop, i would first try to disable the protections via apps (root ; dont reset, install app, try). Same applies to manually trying "disabling commands" via Terminal or ADB, root, try.
If that still does not work ... i would try to download a stock lolipop firmware and extract its files. I would then try to create a custom recovery (read tutorials) and also check if there were any options i could manually reprogram inside boot.img , recovery.img, system.img etc... (more tutorials lol)
Again man, im no expert, but thats what i would do! i actually downloaded that lollipop stock firmware for your device and will try to look inside it when i have time.
Piridroid said:
OK, so it was supersu-me and the issue has to do with SElinux right.
dude i own a Galaxy J1 mini and i was the "first person" to root the B/F/M/Y versions (custom recovery method, based on an obscure version created for the H version) , this device is also a 5.1.1 android, SElinux activated from factory. The website which provided the root for the H version vanished a couple of weeks after they annouced it... lucky to find it, i just had to read easy tutorials here in XDA to learn how to properly port the TWRP for my specific model B and later on for the other J1 mini variants on ppl demand.
What i find out from my experience is, if i was going to wait for some expert to find how to root it, i would still be waiting... keep trying!
I would personally as a noob, try to find out how to disable KNOX or SElinux . There are probably commands which can be run as root user to disable them, for instance "selinux set permissive" (i know it exists, something like that, maybe). There are apps which claim to do those stuff, just search playstore for "knox" or "selinux" and you will see. In case none does the job automatically, search how to do it manually.
In my case, the TWRP+SuperSU method worked just fine, looks definitive. BUT, before i found this, the only other real option was a chinese app called 360root. None other root app works on my device so far. But its root was unstable and not compatible with all apps, thats why i searched for a permanent root.
THis 360root only worked on the older firmware (also 5.1.1, but older samsung release).
My opinion is... in case you dont mind using kitkat (android 4.4) i would flash the oldest firmware and try to root it with Kingo (which owners of variants of the MEGA 2 claim is the only tool capable, it even turns knox off in some cases). Remembering that if this worked, you would have to disable automatic firmware updates. Letting a rooted device to auto-update usually creates more trouble.
If kitkat is a no go for ya and you want to stick with lollipop, i would first try to disable the protections via apps (root ; dont reset, install app, try). Same applies to manually trying "disabling commands" via Terminal or ADB, root, try.
If that still does not work ... i would try to download a stock lolipop firmware and extract its files. I would then try to create a custom recovery (read tutorials) and also check if there were any options i could manually reprogram inside boot.img , recovery.img, system.img etc... (more tutorials lol)
Again man, im no expert, but thats what i would do! i actually downloaded that lollipop stock firmware for your device and will try to look inside it when i have time.
Click to expand...
Click to collapse
Ok let me know what you find with the firmware when you get the chance.I have used 360root also in the past myself on devices when nothing else would work.I have tried several times and different ways.Disabled Knox via terminal with temp. root and still no go.It's the SELinux enforcing is the biggest problem.Kingo will install as a system app..but you won't have full root unless you run the apk to root the device again and it reboots on it's own after about 5 minutes or so.I'll keep stabbing at it..and post my findings.I assume I'm not the only one that could use this.Thanks for your time Piridroid.
Anything new on this?
After extensive searching, it's apparent that there is no method to root the LG Escape 3 (LG-K373). It seems KingRoot will provide temp root, but only to cause problems and random reboots. My understanding is that KingRoot will not work effectively with a locked bootloader on Marshmallow.
MY QUESTION: Is is possible to downgrade Android to Lollipop in order to achieve root on this device.
There doesn't appear to be any real community/interest in obtaining root on this device, although with it's recent release as a promotional device on Cricket I would assume more users will be showing up.
Is it simply Android 6 w/ the locked bootloader that is keeping the device from being able to achieve root?
If so, I would greatly appreciate a point in the right direction. Also, if there are any threads I'm missing in regard to this device?
THANK YOU and would REALLY appreciate any help with this device.
does ur device has official lollipop? If yes .
Flash it
Revantark said:
does ur device has official lollipop? If yes .
Flash it
Click to expand...
Click to collapse
It came w/ Marshmallow 6.0 I haven't even begun to track down the required Lollipop files until I was at least partly sure it would work. I'm new to LG, although I've downgraded with Samsung and Motorola in the past without much issue. I guess the first thing is to figure all of the flash files I'll need.
The real question is assuming I can get it backed down to Lollipop with Rooting be possible?
THANKS!!!!
spyder5157 said:
It came w/ Marshmallow 6.0 I haven't even begun to track down the required Lollipop files until I was at least partly sure it would work. I'm new to LG, although I've downgraded with Samsung and Motorola in the past without much issue. I guess the first thing is to figure all of the flash files I'll need.
The real question is assuming I can get it backed down to Lollipop with Rooting be possible?
THANKS!!!!
Click to expand...
Click to collapse
No man i think u cant achieve root on this device. If u try to root ur device will brick. Since ur device came with Android 6 u cant downgrade to lollipop.
So u cant downgrade and root ur device.
Revantark said:
No man i think u cant achieve root on this device. If u try to root ur device will brick. Since ur device came with Android 6 u cant downgrade to lollipop.
So u cant downgrade and root ur device.
Click to expand...
Click to collapse
Thank you for the reply. I am just shocked that every step of the way is failure. What is the most surprising to me is that nearly all other LG devices can get root seemingly without much trouble. Even the flagship phones like the G6 (and even the ability to unlock the bootloader).
If I could just ask an opinion of those out there..... Does anyone think this is something that will happen in the future? (Root), or is there just not enough interest in the device to have a community putting any effort into it???
I've always had higher end phones of which I managed to break and decided to try one of these lower end phones. It just seems like there isn't enough of a community working on them... I would just like to think someone (smarter than me) will find a way to get root??
THANK YOU FOR YOUR REPLY. I thought maybe there were some flash files that would allow me to downgrade. I've been a bit out of the loop for a bit, so having some trouble catching up....I appreciate your help.