Database Users

Galaxy Tab won't boot after installing Custom Rom HELP

Hi all,
I've a big problem ! I've rooted my Galaxy tab 2 until there no problem everything works fine. After that I've installed like explain Rom Manager and Clockwork 3 droid.
I made a backup first on my external card and then I try to install the custom rom Cleanrom. And since then I'm stuck on the Samsung Logo! Impossible to go on recovery or do anything. !!
Please Help what Can I do?

Ok some news , I succeded to acces to Odin mode and I don't know why
Finally I've try to root again the samsung to be able to access to recovery. I let you know

Perfect I finally succeded to install the custom rom! I don't know how but It's work
I'm trying now to overclock but SetCpu won't detect a bigger frequency
Any idea?

Kinoal said:
Perfect I finally succeded to install the custom rom! I don't know how but It's work
I'm trying now to overclock but SetCpu won't detect a bigger frequency
Any idea?
Click to expand...
Click to collapse
You need to have a kernel that supports overclocking, you can find some kernels that supports that in the galaxy tab 2 dev section
Sent from my ST18i using xda premium

Ok but there is only 2 kernel availaible Infected Rom or CleanRom and I don't see any info if one of theses have overclocking possibilities :s

There is no overclocking available for the Tab 2 yet. One of the developers will have to modify a kernel first. Secondly, ROM manager is mostly for phones only, it is not compatible with this tablet so don't use it. You seem to be one of those that just fire ahead before looking first so make sure you read the OP in the ROM your installing first so you don't mess up again. 3G models and Wifi only model roms are not interchangeable.

Thanks for your answer !
I've installed CleanRom 1.1 on my 5110 and it seems to work fine
So I'll wait now. This custom Rom works better than the default one

cruise350 said:
There is no overclocking available for the Tab 2 yet.
Click to expand...
Click to collapse
Wrong, There is no overclock kernel for the 10.1. Theres plenty for the 7.0
cruise350 said:
3G models and Wifi only model roms are not interchangeable.
Click to expand...
Click to collapse
Wrong, They will work but the user will lose that 3g functionality.

We have 2 valid stock ROMs for 7" one for P3113 model ( without GPS module ) & the other from SAMMOBILE for P3100 ( Turkey ).
P3100 factory ROM works on all P3100 phones in APJ region...this may not work in US or Europe models.
But if you bricked your P31XX, these ROM's will help you to get back on track provided you are able to boot to download mode correctly.

Custom ROM and kernel with overclocking support required.

I have a samsung galaxy trend s7392. Since it lags when playing high end games or using heavy apps, I'd like to overclock it. I have already rooted it. It has JB 4.1.2 as stock firmware with samsung touchwiz 4.0. Since it's not a popular model, the developers might not have developed anything yet for it. But since this phone's look, feel, features and stock firmware are a lot similar to more popular models like grand quattro i8552, i9082, etc some of you could know what roms and kernels would work good with it. Please help. I've googled my hands off. Thank you so much.

todopertin said:
I have a samsung galaxy trend s7392. Since it lags when playing high end games or using heavy apps, I'd like to overclock it. I have already rooted it. It has JB 4.1.2 as stock firmware with samsung touchwiz 4.0. Since it's not a popular model, the developers might not have developed anything yet for it. But since this phone's look, feel, features and stock firmware are a lot similar to more popular models like grand quattro i8552, i9082, etc some of you could know what roms and kernels would work good with it. Please help. I've googled my hands off. Thank you so much.
Click to expand...
Click to collapse
You might have better luck by going into the i8552 forum and ask a developer there if he knows if it is compatible. They would know the best.

todopertin said:
I have a samsung galaxy trend s7392. Since it lags when playing high end games or using heavy apps, I'd like to overclock it. I have already rooted it. It has JB 4.1.2 as stock firmware with samsung touchwiz 4.0. Since it's not a popular model, the developers might not have developed anything yet for it. But since this phone's look, feel, features and stock firmware are a lot similar to more popular models like grand quattro i8552, i9082, etc some of you could know what roms and kernels would work good with it. Please help. I've googled my hands off. Thank you so much.
Click to expand...
Click to collapse
Hi, I also own a Galaxy Trend S7392 and looking for a custom rom. But I couldn't find one. To start developing a new rom, I tried building from AOSP sources. The build was successful, but while flashing it on phone, ODIN reports FAIL as soon as it starts writing system.img. I am unable to figure that out why is it so.
I am looking for some concrete steps so as to compile a ROM for our phone and flash it from AOSP sources specifically. If you have any idea about that, please help.

trivalent said:
Hi, I also own a Galaxy Trend S7392 and looking for a custom rom. But I couldn't find one. To start developing a new rom, I tried building from AOSP sources. The build was successful, but while flashing it on phone, ODIN reports FAIL as soon as it starts writing system.img. I am unable to figure that out why is it so.
I am looking for some concrete steps so as to compile a ROM for our phone and flash it from AOSP sources specifically. If you have any idea about that, please help.
Click to expand...
Click to collapse
After successfully building a rom you need to flash the rom from inside of recovery. I'm not sure of the specifics of your rom for flashing. You will need to go to your rom thread for that and read the guids on how to flash it correctly. You will also need a gapps package. goo.im has this. If you built for 4.3 aosp they have the gapps there. If you built for 4.4 you can try these gapps. http://forum.xda-developers.com/showthread.php?t=2397942

atrus5 said:
After successfully building a rom you need to flash the rom from inside of recovery. I'm not sure of the specifics of your rom for flashing. You will need to go to your rom thread for that and read the guids on how to flash it correctly. You will also need a gapps package. goo.im has this. If you built for 4.3 aosp they have the gapps there. If you built for 4.4 you can try these gapps. http://forum.xda-developers.com/showthread.php?t=2397942
Click to expand...
Click to collapse
Thanks for the reply atrus5.
My phone is currently using STOCK ROM for my Galaxy Trend. There is no thread dedicated for Galaxy Trend Duos S7392 so there is a little information available at the moment.
I am stuck on flashing the AOSP generated system.img to my phone. GAPPS will come a lot later .

trivalent said:
Thanks for the reply atrus5.
My phone is currently using STOCK ROM for my Galaxy Trend. There is no thread dedicated for Galaxy Trend Duos S7392 so there is a little information available at the moment.
I am stuck on flashing the AOSP generated system.img to my phone. GAPPS will come a lot later .
Click to expand...
Click to collapse
You have to flash the whole zip that gets built not just the system.img

atrus5 said:
You have to flash the whole zip that gets built not just the system.img
Click to expand...
Click to collapse
OK, but I don't know how to generate the whole ZIP. Moreover,
ODIN requires .tar.md5 package to flash it. This is what I did :
1. Extract STOCK tar.md5 package
2. Replaced system.img with the one I compiled.
3. Repacked tar.md5 package.
4. Used ODIN to flash the tar.md5 package.
5. ODIN reported failed as soon as it started flashing system.img
Further help will be highly appreciated.

trivalent said:
OK, but I don't know how to generate the whole ZIP. Moreover,
ODIN requires .tar.md5 package to flash it. This is what I did :
1. Extract STOCK tar.md5 package
2. Replaced system.img with the one I compiled.
3. Repacked tar.md5 package.
4. Used ODIN to flash the tar.md5 package.
5. ODIN reported failed as soon as it started flashing system.img
Further help will be highly appreciated.
Click to expand...
Click to collapse
You will need to flash the rom from recovery.
First you will need to be rooted. If you don't have that you can find it here at this link. http://forum.xda-developers.com/showthread.php?t=2494471
You will need to have a cwm recovery. Here is the link to that. http://forum.xda-developers.com/showthread.php?t=2552935
Inside of cwm recovery you will need to factory reset/erase data, erase cache and dalvik.
Then flash the rom and gapps packages.
i don't know if your device is locked or not since I do not own this device. This is the best that I could find. I don't know if it works. This advice is for the i8552. Your best bet is to look through these threads to find what you are looking for. http://forum.xda-developers.com/grand-quattro

atrus5 said:
You will need to flash the rom from recovery.
First you will need to be rooted. If you don't have that you can find it here at this link. http://forum.xda-developers.com/showthread.php?t=2494471
You will need to have a cwm recovery. Here is the link to that. http://forum.xda-developers.com/showthread.php?t=2552935
Inside of cwm recovery you will need to factory reset/erase data, erase cache and dalvik.
Then flash the rom and gapps packages.
i don't know if your device is locked or not since I do not own this device. This is the best that I could find. I don't know if it works. This advice is for the i8552. Your best bet is to look through these threads to find what you are looking for. http://forum.xda-developers.com/grand-quattro
Click to expand...
Click to collapse
Lots of links to study.... Thanks
1) The phone is rooted. NO issues with that.
2) CWM recovery is not available for my phone. I tried the CWM recovery builder to build image, but the build failed. I tried to build the same manually, but on flashing, I get E:Failed to Verify Signature.
NO way ahead...

trivalent said:
Lots of links to study.... Thanks
1) The phone is rooted. NO issues with that.
2) CWM recovery is not available for my phone. I tried the CWM recovery builder to build image, but the build failed. I tried to build the same manually, but on flashing, I get E:Failed to Verify Signature.
NO way ahead...
Click to expand...
Click to collapse
Talk to the main developers on the links that I gave you and see what they say. I can't really help you since I don't have the device. You will get more help from them then here. They will be able to steer you in the right way. sorry

atrus5 said:
Talk to the main developers on the links that I gave you and see what they say. I can't really help you since I don't have the device. You will get more help from them then here. They will be able to steer you in the right way. sorry
Click to expand...
Click to collapse
No need to be sorry... You have done your best. I have posted few queries, waiting for the response.
Thanks a lot for your efforts and guidance.

Topic dead?
Guys, I'm also using Galaxy Trend Duos S7392. Need a custom firmware because of the excessive bloatware on the stock ROM.

todopertin said:
I have a samsung galaxy trend s7392. Since it lags when playing high end games or using heavy apps, I'd like to overclock it. I have already rooted it. It has JB 4.1.2 as stock firmware with samsung touchwiz 4.0. Since it's not a popular model, the developers might not have developed anything yet for it. But since this phone's look, feel, features and stock firmware are a lot similar to more popular models like grand quattro i8552, i9082, etc some of you could know what roms and kernels would work good with it. Please help. I've googled my hands off. Thank you so much.
Click to expand...
Click to collapse
Can you tell me how to root it??

Even I want the rooting guide. Hope you successfully make a rooting guide with some good ROM later on. We wil support you,

Akhileshvv said:
Guys, I'm also using Galaxy Trend Duos S7392. Need a custom firmware because of the excessive bloatware on the stock ROM.
Click to expand...
Click to collapse
you can remove those bloatwares by just rooting and using root app delete to locate and delete. it will not only free rom but will also make your phone faster since the bloatwares that used to run in the background consuming cpu, battery and ram will have been removed.

Samsung galaxy trend s7392 folks use kingoapp from kingoapp.com to root your phone. it will surely root it. I've upgraded to galaxy i8552 quattro and the two phones are just a copycat of each other. so there are chances a custom rom intended for quattro(more popular of the two) could work on trend.
Sent from my Q500 using XDA Premium 4 mobile app

Already rooted on the first day itself
todopertin said:
you can remove those bloatwares by just rooting and using root app delete to locate and delete. it will not only free rom but will also make your phone faster since the bloatwares that used to run in the background consuming cpu, battery and ram will have been removed.
Click to expand...
Click to collapse
It's already rooted bro. I have done it on the very first day I bought the device. Still, not all bloatware can be removed by just rooting. So, I think there is a need of optimised ROM like CyanogenMod or any other.

Akhileshvv said:
It's already rooted bro. I have done it on the very first day I bought the device. Still, not all bloatware can be removed by just rooting. So, I think there is a need of optimised ROM like CyanogenMod or any other.
Click to expand...
Click to collapse
Hey first of all, after rooting you will gain super user access and ofcourse after that you will be able to remove any system app(bloatware).

pls help i also have the same device
I have gt7392 pls help me to put any custom rom available if u get any solution pls share with me.
Thanks in advance

I am also an unhappy user of s7392. It is indeed a laggy phone and to be honest, root (vroot)+ removing any unused application, including play store, hangout and google+ didn't help it too much. Phone is still hanging, lagging and sometimes not showing who is calling or, worst, not ringing at all.
An optimised ROM it will be really grate.
BR

i925U (US Cellular) Roms CM11 Port and SlimKAT (4.4.4) (AOSP) (RECOVERY)(KERNEL)

Hey guys, for anyone with an i925U (US Cellular) Model Note 10.1, you can find an updated recovery and a couple roms for it here:
http://teamuscellular.com/Forum/forum/372-galaxy-note-101/
I'm currently researching how to build an AOSP kernel for our device that will OC to 1.6GHz (which it is known to be capable of) and hopefully releasing that for these roms. If anyone would be interested in helping, I would be greatly appreciative!
I've already asked the creator of the SlimKat rom for the source, so hopefully with that we can patchwork a kernel to work on our neglected tablets. If anyone is willing to take some time to help me get this working, I'd gladly donate to you via paypal for your time and hard work.
Thank you!

I'm currently compiling a kernel that I hope will work. If I'm lucky, it'll be 1.7 GHz OC for 4.4.x AOSP roms... that or I'll brick my tablet. We shall see.

Done, anyone wanna try?
1.7 GHz on the US Cellular Note 10 (i925u) built for AOSP roms
https://www.dropbox.com/s/owu6axfxhnf2utd/Screenshot_2014-08-12-08-33-29.png
Antutu Benchmark:20,943 (first run)
https://www.dropbox.com/s/sc7oi7qg19pcfh6/Screenshot_2014-08-12-08-53-26.png
Download Link:
https://www.dropbox.com/s/prh701qfheyzttk/boot.img
Just take the boot.img, drop it into your slimkat zip, overwrite the existing kernel, and reflash the rom. Let me know if you notice any bugs, but everything seems perfect to me so far.

chronicaust said:
Done, anyone wanna try?
1.7 GHz on the US Cellular Note 10 (i925u) built for AOSP roms
https://www.dropbox.com/s/owu6axfxhnf2utd/Screenshot_2014-08-12-08-33-29.png
Antutu Benchmark:20,943 (first run)
https://www.dropbox.com/s/sc7oi7qg19pcfh6/Screenshot_2014-08-12-08-53-26.png
Download Link:
https://www.dropbox.com/s/prh701qfheyzttk/boot.img
Just take the boot.img, drop it into your slimkat zip, overwrite the existing kernel, and reflash the rom. Let me know if you notice any bugs, but everything seems perfect to me so far.
Click to expand...
Click to collapse
Glad there's a little but resilient community of Note 10.1 I925u tablets. I'm recently a proud owner of one. My only sorry is not having programming skills to help you...but, once I root it (It may take a week or so Because I'm using the full 15 days of trial to "test it" for problems) I'll definately try this ROM.
Thank you for your work.
Btw if you could point me out a page with step by step i925u rooting method I'd appreciate. Through my research I've found too many brick cases often due to poor guide lines. Thanks.

Shwanz said:
Glad there's a little but resilient community of Note 10.1 I925u tablets. I'm recently a proud owner of one. My only sorry is not having programming skills to help you...but, once I root it (It may take a week or so Because I'm using the full 15 days of trial to "test it" for problems) I'll definately try this ROM.
Thank you for your work.
Btw if you could point me out a page with step by step i925u rooting method I'd appreciate. Through my research I've found too many brick cases often due to poor guide lines. Thanks.
Click to expand...
Click to collapse
Just download and use the Framaroot app to root, then after you get root success, download SuperSU and update the SU Binary. But Then Reboot, download Rashr from the okay store, and use it to flash the recovery (I used the CWM recovery from the teamuscellular forums). Reboot to recovery, now you can flash roms = ).

chronicaust said:
Just download and use the Framaroot app to root, then after you get root success, download SuperSU and update the SU Binary. But Then Reboot, download Rashr from the okay store, and use it to flash the recovery (I used the CWM recovery from the teamuscellular forums). Reboot to recovery, now you can flash roms = ).
Click to expand...
Click to collapse
Alright!! This ROM is awesome! Thanks! (I know, I know...I couldn't help it and didn't wait one more week... )
One more thing, the method you mention above to OC the exynos to 1.7ghz is safe? How's battery life after that? And, Is there an option to switch between governors?

I haven't had any problems at all and battery life is better (because minimum clock speed is also reduced). No bugs that I've noticed. = ) and yes i believe switching governors is supported.

I keep getting "e:signature verification failed". I'm new at this so I'm not sure what I'm missing?
I'm using Flashify. Any help would be greatly appreciated

can i get the rom file ?
i can't enter the link..
thx

[T900XXUBOH4] Let's Root the New T900(12.2 wifi) LP Stock Rom

Hello all,
I'm determined to get root for Lollipop. I've seen several other Samsung devices that, like ours, lost root in the 5.1.1 update. These devices also have twrp working and attempting to flash root results in a bootloop.
Based on what I can gather, modifying the kernel by setting selinux to permissive should do the trick in allowing root to be flashed safely.
I'm setting up a vm right now, so I'm going to attempt compiling an insecure kernel in my ubuntu vm.
If anyone would like to test, that'd be awesome! I actually haven't made the jump up, so I figure if anyone has and would like to test, I might as well ask and save me time in dl'ing the firmware and odin'ing up.
Thanks

andrewnelson23 said:
Hello all,
I'm determined to get root for Lollipop. I've seen several other Samsung devices that, like ours, lost root in the 5.1.1 update. These devices also have twrp working and attempting to flash root results in a bootloop.
Based on what I can gather, modifying the kernel by setting selinux to permissive should do the trick in allowing root to be flashed safely.
I'm setting up a vm right now, so I'm going to attempt compiling an insecure kernel in my ubuntu vm.
If anyone would like to test, that'd be awesome! I actually haven't made the jump up, so I figure if anyone has and would like to test, I might as well ask and save me time in dl'ing the firmware and odin'ing up.
Thanks
Click to expand...
Click to collapse
I have TWRP working so I can backup safely, so I'd be willing to try it.

lewmur said:
I have TWRP working so I can backup safely, so I'd be willing to try it.
Click to expand...
Click to collapse
I just made the update, but haven't gotten to twrp'ing it yet. Here's the kernel. You actually need to flash it via odin as a PDA. The kernel output is automatically a boot.img, which we can't really install. So i converted it into a .tar which we can flash through odin.
Edit: It just boots right into twrp for me, it won't boot system
Remember this is a test. If something terribly wrong goes happen, I'm not forcing you to test this: IT'S ON YOU.

That means that we need a flashable stock kernel as well. So we can flash SuperSu and right after the stock kernel and we should be fixed. In a way the same auto root does.
After flashing your kernel I couldn't boot into system. But I am able to flash TWRP with Odin and boot into TWRP. So I flashed SuperSU and wiped caches. I flashed back self made kernel.tar.md5. But still couldn't boot into system. Just flash whole thing again.
Now with the second try TWRP sticks and I was able to flash SuperSu and flashed my stock kernel back. But now I have bootloop after the startup sound. B.t.w. I used SuperSu 2.46
What's next?

If I remember right, bootloop after startup sound means some of the files in your ROM are corrupt...
The device loads in this order: Bootloader, Kernel, ROM. So if it won't boot at all, then the bootloader is corrupt. If it only boots to splash screen but not boot animation, then kernel is corrupt. If it bootloops at start animation then ROM is corrupt.
In other words, it's getting closer!
Edit: @andrewnelson23 Did you download the kernel from Samsung Opensource? If so I tried to edit their kernel following the changes here https://github.com/glewarne/S6-UniKernel/commit/4e3880c912ade3468f3f42189acb1d8d205901fb but it wouldn't compile for me...

Planet X said:
That means that we need a flashable stock kernel as well. So we can flash SuperSu and right after the stock kernel and we should be fixed. In a way the same auto root does.
After flashing your kernel I couldn't boot into system. But I am able to flash TWRP with Odin and boot into TWRP. So I flashed SuperSU and wiped caches. I flashed back self made kernel.tar.md5. But still couldn't boot into system. Just flash whole thing again.
Now with the second try TWRP sticks and I was able to flash SuperSu and flashed my stock kernel back. But now I have bootloop after the startup sound. B.t.w. I used SuperSu 2.46
What's next?
Click to expand...
Click to collapse
shakatu said:
If I remember right, bootloop after startup sound means some of the files in your ROM are corrupt...
The device loads in this order: Bootloader, Kernel, ROM. So if it won't boot at all, then the bootloader is corrupt. If it only boots to splash screen but not boot animation, then kernel is corrupt. If it bootloops at start animation then ROM is corrupt.
In other words, it's getting closer!
Edit: @andrewnelson23 Did you download the kernel from Samsung Opensource? If so I tried to edit their kernel following the changes here https://github.com/glewarne/S6-UniKernel/commit/4e3880c912ade3468f3f42189acb1d8d205901fb but it wouldn't compile for me...
Click to expand...
Click to collapse
It hits splash screen and will not go further. Actually this is the first time I've just done a kernel edit so forgive my incompetence.
Yes, I downloaded from Samsung source. The sprint note 4 had the same issue, and I believed the dev simply used a few menuconfig edits to disable selinux and root checking. First up, I need to build a kernel from their source to confirm that I'm actually doing it right. Then I will only try removing the selinux(with menuconfig). If that works I will attempt disabling the root check stuff. If it doesn't work, I'll undo the selinux stuff, disable root check and see if that boots. We'll see.

Have you tried framaroot ?

arcadia2uk said:
Have you tried framaroot ?
Click to expand...
Click to collapse
does it void knox?, plus our device is not listed as supported
also testers look here http://forum.xda-developers.com/gal...test-root-kernel-t900-touchwiz-5-1-1-t3199349

An option that might work is KingRoot
Once you are rooted you can use Super-Sume to remove the KingRoot apps and replace them with SuperSU

Kongo Root doesn't work. I have already tried.

http://forum.xda-developers.com/gal...hwiz-5-1-1-t3199349/post62786768#post62786768
on my page i need someone who has their 5.1.1 stock rom and TWRP installed working to flash my root kernel and tell me if SE Linux is Passive on about device or not. So i know what i need to fix. It will boot. should not boot loop if you already have 5.1.1 stock running and twrp.

andrewnelson23 said:
I just made the update, but haven't gotten to twrp'ing it yet. Here's the kernel. You actually need to flash it via odin as a PDA. The kernel output is automatically a boot.img, which we can't really install. So i converted it into a .tar which we can flash through odin.
Edit: It just boots right into twrp for me, it won't boot system
Remember this is a test. If something terribly wrong goes happen, I'm not forcing you to test this: IT'S ON YOU.
Click to expand...
Click to collapse
After flashing the tar via Odin, the tablet will only boot to TWRP. Had to restore backup.

lewmur said:
After flashing the tar via Odin, the tablet will only boot to TWRP. Had to restore backup.
Click to expand...
Click to collapse
....read op....

andrewnelson23 said:
....read op....
Click to expand...
Click to collapse
I did read the OP. So what's your point?

lewmur said:
I did read the OP. So what's your point?
Click to expand...
Click to collapse
You literally quoted me saying that it doesn't work and it boots straight to twrp...

working on v3 now. adding more ShinySide tweaks.

stealthee said:
http://forum.xda-developers.com/gal...hwiz-5-1-1-t3199349/post62786768#post62786768
on my page i need someone who has their 5.1.1 stock rom and TWRP installed working to flash my root kernel and tell me if SE Linux is Passive on about device or not. So i know what i need to fix. It will boot. should not boot loop if you already have 5.1.1 stock running and twrp.
Click to expand...
Click to collapse
Hey, just wanted to say you guys are on the right track. See this thread and talk to the OP if you need help
http://forum.xda-developers.com/showthread.php?t=3192767
andrewnelson23 said:
You literally quoted me saying that it doesn't work and it boots straight to twrp...
Click to expand...
Click to collapse
Sent from my ATRIX HD using XDA Free mobile app

palmbeach05 said:
Hey, just wanted to say you guys are on the right track. See this thread and talk to the OP if you need help
http://forum.xda-developers.com/showthread.php?t=3192767
Sent from my ATRIX HD using XDA Free mobile app
Click to expand...
Click to collapse
root access was granted look here http://forum.xda-developers.com/gal...hwiz-5-1-1-t3199349/post62800149#post62800149

toolhas4degrees said:
root access was granted look here http://forum.xda-developers.com/gal...hwiz-5-1-1-t3199349/post62800149#post62800149
Click to expand...
Click to collapse
I missed that. Only found the link i posted when i was looking at SU updates (play store has 2.46, beta has 2.49). Saw a samsung user facing similar issues to what you guys on the 12.2 have (i'm on a 8.4). Thought i'd throw some kind of input to help out with things. Glad to see you guys figured it out though.
Sent from my ATRIX HD using XDA Free mobile app

Samsung Bites
So I just got the US OTA update to 5.1.1 for my galaxy tab pro 12.2 and it is much smoother & pretty nice.. All I wanted to do was add root and rip out knox.. Here's a transcript from samsung official support.. lol.. most likely the last time i buy from them..
Please wait for a Samsung Agent to respond.
Chat InformationYou are now chatting with 'Sunny M'. There will be a brief survey at the end of our chat to share feedback on my performance today.
Chat InformationYour Issue ID for this chat is LTK11256012037609X
Sunny M: Hi, thank you for reaching out to Samsung technical support. How may I assist you?
Visitor: i'm trying to find a download link for the us wifi version of the galaxy tab pro 12.2 firmware update to android 5.1.1 -- model number SM-T900
Sunny M: We have a dedicated team to assist you on the product that you are inquiring about. Please stay online while I transfer the chat to the appropriate department for further assistance.
Chat InformationPlease wait while I transfer the chat to the best suited Samsung Agent.
Chat InformationYou are now chatting with 'Bobby A'. There will be a brief survey at the end of our chat to share feedback on my performance today.
Chat InformationYour Issue ID for this chat is LTK11256012037609X
Bobby A: Hi, thank you for reaching out to Samsung technical support. Your chat was transferred to me and I will be glad to assist you. Please allow a couple of minutes, while I review the previous chat to assist you better.
Bobby A: I see that you want to update the tab pro.
Visitor: yes please..
Bobby A: The updates for the tablets will be released automatically and it can be updated on the tablet. It is not possible to download the firmware through a link or website.
Visitor: yeah my tablet already updated.. in all actuality i want to cook a custom firmware with root added and kies removed.. please help me get my hands on the zip..
Bobby A: Samsung do not recommends to root the tablet as it might not be stable and might damage the tablet.
Visitor: i'm sure they don't recommend it, but they also don't help me use the bathroom or wash my car.. i'm not asking for much.. i just want root & twrp -- i'm a developer..
Bobby A: We do not have the website or links for rooting the tablet.
Visitor: i don't want the website or links for rooting it.. i just want the ota zip file.. please help me out with providing me the zip file that my tablet downloaded..
Bobby A: As we have told you that the custom firmware is not available for download.
Visitor: i'm not sure where the breakdown in language is.. i don't want custom firmware, i want the OTA zip file.. the "official" one..
Bobby A: The firmware can be available on the tablet when it is released for your tablet. It will be released through the Samsung server. The Zip files for the firmware will not be available for download. Hope you understand.
Visitor: i do not understand. it is available, it is for download, i didn't have wireshark running to sniff the url when it downloaded earlier.. i would like the url please.. it will save me hours of rolling back..
Bobby A: If the download file is available, I would have provided you by now.
Visitor: i'm not asking for support in any way of anything custom, only the ability to download a file you have released to the public..
Visitor: i'm feeling like a 2 minute question has taken 15 already.. can you please help me out with a link?
Bobby A: The firmware files can be downloaded on the tablet through the server when it is available.
Bobby A: There is no link to download the firmware file for the tablet. They can be updated online from the tablet, when the update is available for your tablet's model.
Visitor: it is already available.. it downloaded. I have it.. thank you, it is nice.. there are a few things I would like to do to it to make it nicer and more usable..
Bobby A: Samsung do not release the firmware on the official site to download it manually.
Bobby A: If you are looking for more details on the functionality of a product or would like to find answers to some of the questions, visit us at "***REMOVED FOR POSTING ABILITY***" for an interactive review of some of our Samsung products.
Chat InformationChat session has been terminated by the Samsung Agent.
You are not currently in a chat session.

EFIDroid for the Samsung Galaxy Note 4/Note Edge (Snapdragon Variants)

More details in the Verizon Note 4 forum here.
XDA:DevDB Information
EFIDroid, Kernel for the T-Mobile Samsung Galaxy Note 4
Contributors
abraha2d, m11kkaa
Source Code: https://github.com/efidroid
Kernel Special Features: UEFI, MultiBoot
Version Information
Status: Beta
Current Beta Version: 0.1
Beta Release Date: 2017-03-18
Created 2017-03-20
Last Updated 2017-03-31

THIS IS INCREDIBLE!! Greatest thing since sliced bread where is the donation link this an amazing piece of development 2nd lvl bootloader f yaaaa!!

vegoja said:
THIS IS INCREDIBLE!! Greatest thing since sliced bread where is the donation link this an amazing piece of development 2nd lvl bootloader f yaaaa!!
Click to expand...
Click to collapse
Believe me, I didn't do much work. You can donate to @m11kkaa, though. He's the developer of EFIDroid (if you didn't already know that...). I believe he has a donation link in his profile...
Sent from my Samsung Galaxy Note 4 using XDA Labs

This is great but is there a way to uninstall it (if necessary) and get back to the primary ROM (stock or Lineage OS) without losing data?

tried to do a bit of light research and couldn't find what's different between this and other preexisting multiboot solutions. I've been using Dual Boot Patcher for sometime without issues. Is this somehow better? and if so, how?

Mtotallywired said:
tried to do a bit of light research and couldn't find what's different between this and other preexisting multiboot solutions. I've been using Dual Boot Patcher for sometime without issues. Is this somehow better? and if so, how?
Click to expand...
Click to collapse
EFIDroid is what you would call a "second-stage bootloader". The main advantage over Dual Boot Patcher (at least for me) is that you no longer have to patch zip files before installing. Also, EFIDroid is more than just a multi-boot solution. Quoting @m11kkaa:
efidroid tries to focus on simplicity, and doesn't require any kernel modifications etc.
in general: well having such a powerful bootloader in your boot stage gives you lots of possibilities, like multiboot, replacements/additions for kernels/ramdisk/cmdline.
This project has a lot more potential than what's currently implemented. i.e. you can give samsung devices fastboot and sony devices a standalone recovery. Also you can natively boot GNU GRUB if you're into booting linux kernel's the desktop way.
Click to expand...
Click to collapse
The two solutions are similar enough that you can migrate your setup from Dual Boot Patcher to EFIDroid without losing any data. I'll try to post a guide later this week.

I was I under the impression dual boot required multiple ROMs running the same kernel... If that is the case a huge advantage efi has is each ROM having their own boot img. I'm currently running 3 ROMs a lollipop a marshmallow and of course a nougat. I really just wanted to see all 3 latest android os running flawlessly on 1 device. And I did just that hats off to the developer for this.

baharvey7817 said:
This is great but is there a way to uninstall it (if necessary) and get back to the primary ROM (stock or Lineage OS) without losing data?
Click to expand...
Click to collapse
There's an uninstall button in the app. Or, you could just flash the original boot.img via TWRP (basically what the uninstall button does).

I'm a noob...What is this? Where do I need to go to learn about why I would want this...Please explain lol

mlock420 said:
I'm a noob...What is this? Where do I need to go to learn about why I would want this...Please explain lol
Click to expand...
Click to collapse
you can look at their website, and then decide if you want this level of control over your phone.
http://efidroid.org/

Thanks for bringing us this tool. One thing I can't figure out...how do we Odin a different bootloader? I have DOK2 loaded now, and want to put Dr. Ketan's on the phone. The sub instructions say to Odin the BL and CP, as the ROM is generally generic. There us also a datafix and an essential fix that needs to be applied. Doing all of that is easy, but how do I keep two separate bootloaders (LP and MM) totally separate? If I flash a LP over a MM, my camera breaks, and if I flash a MM over LP, WiFi breaks. And I'm not talking about dirty flashes, a full system, data, and cache wipe 3x. Only Odin back to the base ROM keeps my phone happy.

1freedude said:
Thanks for bringing us this tool. One thing I can't figure out...how do we Odin a different bootloader? I have DOK2 loaded now, and want to put Dr. Ketan's on the phone. The sub instructions say to Odin the BL and CP, as the ROM is generally generic. There us also a datafix and an essential fix that needs to be applied. Doing all of that is easy, but how do I keep two separate bootloaders (LP and MM) totally separate? If I flash a LP over a MM, my camera breaks, and if I flash a MM over LP, WiFi breaks. And I'm not talking about dirty flashes, a full system, data, and cache wipe 3x. Only Odin back to the base ROM keeps my phone happy.
Click to expand...
Click to collapse
There's no way to have two different bootloaders. EFIDroid comes between the bootloader and the boot.img, so it has no control over the bootloader.
EDIT: EFIDroid may be able to emulate the behavior of another bootloader... you would have to ask @m11kkaa for details...

Where can I download this for T-mobile ??
Sent from my SM-N9300 using Tapatalk

CousinMikeyP said:
Where can I download this for T-mobile ??
Sent from my SM-N9300 using Tapatalk
Click to expand...
Click to collapse
Here is the LINK. You can see more info HERE

I downloaded and started up the EFIdroid unofficial apk but got the following message:
=====================================
Error
Can't load device info. Please check your connection.
/data/user/0/org.efidroid.efidroidmanager.debug/files/devices.json (No such file or directory)
override ota server try again
===============================================
Could you please explain what's going on? Seems that this version is different from the one i downloaded in March. Could it be that it's not getting root access? What can I do to get around this error?

baharvey7817 said:
I downloaded and started up the EFIdroid unofficial apk but got the following message:
=====================================
Error
Can't load device info. Please check your connection.
/data/user/0/org.efidroid.efidroidmanager.debug/files/devices.json (No such file or directory)
override ota server try again
===============================================
Could you please explain what's going on? Seems that this version is different from the one i downloaded in March. Could it be that it's not getting root access? What can I do to get around this error?
Click to expand...
Click to collapse
I will have to look into it... The EFIDroid app error messages are not exactly the most helpful kind. (Good thing the app is being phased out soon). That particular error message could mean many things, but most likely it's a connection issue. We will continue this in Slack.

Will this work on tw 7.0 if i was porting a rom. Also why wont aosp kernel work on tw.. i always thought tw was aosp with skin..

Go to back to the link posted above where you got the unofficial apk and go to post #83. The OP posted an apk there that works fine on our phone.
baharvey7817 said:
I downloaded and started up the EFIdroid unofficial apk but got the following message:
=====================================
Error
Can't load device info. Please check your connection.
/data/user/0/org.efidroid.efidroidmanager.debug/files/devices.json (No such file or directory)
override ota server try again
===============================================
Could you please explain what's going on? Seems that this version is different from the one i downloaded in March. Could it be that it's not getting root access? What can I do to get around this error?
Click to expand...
Click to collapse

RaySCLA said:
Go to back to the link posted above where you got the unofficial apk and go to post #83. The OP posted an apk there that works fine on our phone.
Click to expand...
Click to collapse
Tried what you suggested but it didn't work either. So, I chose the 'nuclear option': I wiped the phone completely then reinstalled the stock Marshmallow ROM. using Odin. After that i installed TWRP v3.0.2 (trltetmo) and Supersu v2.79 as well as Busybox v1.26. Only then was I able to install EFIDroid successfully. Now, I'm able to boot the stock rom as well as Resurrection Remix.
It seems that if your going to install EFIDroid you must have the phone rooted using SuperSU. Using Magisk to root your phone instead of SuperSu won't work (at least it didn't work in my case).

lowkeyst4tus said:
Will this work on tw 7.0 if i was porting a rom. Also why wont aosp kernel work on tw.. i always thought tw was aosp with skin..
Click to expand...
Click to collapse
This should work anywhere, regardless of ROM... But btw, it's a stretch to say TW is just a skin on top of AOSP. In fact, TW is probably the farthest you can get from AOSP... There's a lot of significant differences that make AOSP kernels incompatible with TW ROMs...