T-Mobile FOG->FOJ Root - Galaxy S 5 Q&A, Help & Troubleshooting

Hey guys,
I just rooted yesterday (G900T..FOG) using the TrapKernel method and everything is working just fine. Today I got a prompt for a new security update (FOJ). I haven't installed it yet and was curious -- if I do, will that remove my root? I'm assuming yes. Say I do install it -- is there anything I can do to get back my root aside from downgrading and re-applying TrapKernel?
Secondly, would I be able to flash a rooted FOJ ROM over the top of my FOG and still keep my root or will the update from J to G ? What steps would I need to do to accomplish this other than find the ROM and flash & wipe cache/davlik. Would I be able to dirty flash this or would a full wipe be required?
Last question (for now), if I choose to flash a CM ROM like Fusion would that keep my root as well? Again, I'm pretty sure the answer is yes I just don't want to make bad things happen that could be avoided.

1. if you take the OTA, root will be lost. You will have to downgrade, root, then upgrade using a prerooted rom to get it back.
2. Prerooted stock ROMs are the way to go. Just download Muniz_ri's prerooted stock OJ4 rom and flash it, you'll update to OJ4 and keep root.
http://forum.xda-developers.com/tmobile-galaxy-s5/development/how-to-update-to-g900tof6-5-1-1-pc-t3141404
Straight from that page:
- No need to wipe, the ROM will perform a factory data reset during the flash. Backup your User Data prior to flashing.
Click to expand...
Click to collapse
The ROM will wipe itself, you'll need to back up your stuff before the update.
3. The vast majority of custom ROMs are prerooted. Cyanogen based ones require you to enable root in the developer settings, FYI

Related

[Q] Quick firmware question

If I was lucky enough to get a new GS4 At&t with the mdl firmware I can root and install a custom recovery like twrp. Is that right?
I was thinking of using this guide and then installing cyanogenmod. This should be possible right?
SSMI said:
If I was lucky enough to get a new GS4 At&t with the mdl firmware I can root and install a custom recovery like twrp. Is that right?
I was thinking of using this guide and then installing cyanogenmod. This should be possible right?
Click to expand...
Click to collapse
Yes - MDL firmware will work with the loki bootloader exploit no problem. Definitely read that guide and probably the other stickies as well, so you fully understand what's going on.
Also, when you get the phone, take measures to make sure it does not download the update. Remove the SIM card and turn off wifi so it can't download anything. Then root and install custom recovery and you can turn that all back on (update can't happen with custom recovery).
If you're going to keep it stock for a bit, make sure you root and use Titanium Backup to disable the update apps. You can find those in one of the stickies.

[Q] Do I have to unroot 4.3 to get the OTA?

I have a rooted (no CWM changed) and unlocked Nexus 4 with JB 4.3.
I did not get the OTA yet and I wondered if it is because the phone is rooted. In addition, I read some problems with people who tried to update to 4.4 with rooted phones and are getting infinite bootloops.
Do I have to unroot my 4.3 for getting the OTA and achieving a successful installation?
Thank you all on advance
gosku26 said:
I have a rooted (no CWM changed) and unlocked Nexus 4 with JB 4.3.
I did not get the OTA yet and I wondered if it is because the phone is rooted. In addition, I read some problems with people who tried to update to 4.4 with rooted phones and are getting infinite bootloops.
Do I have to unroot my 4.3 for getting the OTA and achieving a successful installation?
Thank you all on advance
Click to expand...
Click to collapse
Why do you need OTA update when you can get the stock ROM in flashable zip file? All features are remain the same for stock ROM. Search and download it in the Development sections.
gosku26 said:
I have a rooted (no CWM changed) and unlocked Nexus 4 with JB 4.3.
I did not get the OTA yet and I wondered if it is because the phone is rooted. In addition, I read some problems with people who tried to update to 4.4 with rooted phones and are getting infinite bootloops.
Do I have to unroot my 4.3 for getting the OTA and achieving a successful installation?
Thank you all on advance
Click to expand...
Click to collapse
I am rooted and received the OTA notification yesterday. You 'SHOULD' be able to install if ALL you did was root. However, if you applied any mods that made changes to the system, the OTA will fail.
taodan said:
Why do you need OTA update when you can get the stock ROM in flashable zip file? All features are remain the same for stock ROM. Search and download it in the Development sections.
Click to expand...
Click to collapse
This is your best bet if you want to run 4.4. You'll need to install a custom recovery to flash the zip files. All the files and instructions are here:
http://forum.xda-developers.com/showthread.php?t=2527806
gbarayah said:
I am rooted and received the OTA notification yesterday. You 'SHOULD' be able to install if ALL you did was root. However, if you applied any mods that made changes to the system, the OTA will fail.
This is your best bet if you want to run 4.4. You'll need to install a custom recovery to flash the zip files. All the files and instructions are here:
http://forum.xda-developers.com/showthread.php?t=2527806
Click to expand...
Click to collapse
Will flashing the stock 4.4 wipe my data, or it is like getting the OTA, that I keep my settings...?
gosku26 said:
Will flashing the stock 4.4 wipe my data, or it is like getting the OTA, that I keep my settings...?
Click to expand...
Click to collapse
Did you read the linked post?
First step after installing custom recovery is to wipe data/factory reset, so yes, you will lose your settings.
taodan said:
Why do you need OTA update when you can get the stock ROM in flashable zip file? All features are remain the same for stock ROM. Search and download it in the Development sections.
Click to expand...
Click to collapse
I would like to keep my settings if it's possible.
gbarayah said:
Did you read the linked post?
First step after installing custom recovery is to wipe data/factory reset, so yes, you will lose your settings.
Click to expand...
Click to collapse
What I would like is to update to kitkat without losing my data.
I have the bootloader unlocked and the phone rooted, but when I go to recovery mode I get "No command" screen (is that normal?).
I was thinking of getting the phone unrooted, then update through the OTA, then root it again, just for making sure I don't break anything, but the "No command" screen does not look very good...
On the other hand, Would I lose my data if I "unroot" the phone?
gosku26 said:
What I would like is to update to kitkat without losing my data.
I have the bootloader unlocked and the phone rooted, but when I go to recovery mode I get "No command" screen (is that normal?).
I was thinking of getting the phone unrooted, then update through the OTA, then root it again, just for making sure I don't break anything, but the "No command" screen does not look very good...
On the other hand, Would I lose my data if I "unroot" the phone?
Click to expand...
Click to collapse
To unroot, all you need to do is go into SuperSu, disable root, uninstall the app and then reboot the phone.
If all you have done is root the phone, and didn't modify anything else, then the OTA update 'SHOULD' install without a problem.
You can go to Android Police and download the OTA files and flash them via ADB, or you can just wait for the OTA to be pushed to your device.
If you decide to do it the manual way, there is one additional step you must take to ensure to keep your data I believe.
gbarayah said:
To unroot, all you need to do is go into SuperSu, disable root, uninstall the app and then reboot the phone.
If all you have done is root the phone, and didn't modify anything else, then the OTA update 'SHOULD' install without a problem.
You can go to Android Police and download the OTA files and flash them via ADB, or you can just wait for the OTA to be pushed to your device.
If you decide to do it the manual way, there is one additional step you must take to ensure to keep your data I believe.
Click to expand...
Click to collapse
Thank you for your help gbarayah, I really appreciate it.
One last thing: I'm not pretty sure the only thing I modified was the rooting. I did not install any zip to modify my stock version, but there is something weird. I will explain:
At first I had 4.2.2, then I rooted and installed CWM. When 4.3 was released I got the OTA update correctly but I lost the root, so I rooted it again, this time without CWM.
Is the "No command" screen what is supposed to appear when I go to the recovery mode from fastboot menu? Or I would get a default recovery mode program?
If everything is right I will unroot for getting the OTA, but if not, I'm afraid I will have to flash CWM and the stock version, loosing my settings...
EDIT: Ok, I've just realized to get into stock system recovery I have to press VolUp and Power buttons once I'm in the 'No Command' screen, so I'm pretty sure I don't have problems installing the OTA update. Thank You!!!
gosku26 said:
Thank you for your help gbarayah, I really appreciate it.
One last thing: I'm not pretty sure the only thing I modified was the rooting. I did not install any zip to modify my stock version, but there is something weird. I will explain:
At first I had 4.2.2, then I rooted and installed CWM. When 4.3 was released I got the OTA update correctly but I lost the root, so I rooted it again, this time without CWM.
Is the "No command" screen what is supposed to appear when I go to the recovery mode from fastboot menu? Or I would get a default recovery mode program?
If everything is right I will unroot for getting the OTA, but if not, I'm afraid I will have to flash CWM and the stock version, loosing my settings...
EDIT: Ok, I've just realized to get into stock system recovery I have to press VolUp and Power buttons once I'm in the 'No Command' screen, so I'm pretty sure I don't have problems installing the OTA update. Thank You!!!
Click to expand...
Click to collapse
Glad I could help. In the future, as long as you don't modify the system by flashing any modifications, you should be able to get the OTA update to install. Root doesn't affect this, and if you're worried about it, you can always uninstall it.
I opted to update using the stock zip files that were posted above and it worked just fine for me.

[Q] Regarding 4.4

So, I got the OTA notification, and before I do something stupid, I have a few stupid questions I'm on stock 4.3, rooted, unlocked bootloader, custom recovery, xposed framework and franco kernel. I read in other people's threads that in order to not brick, I should go back to stock kernel, stock recovery and I'll lose root and unlocked bootloader, correct? If so, is wug's kit still usable on 4.4 to get root/unlock back? And regarding xposed, anything I should do about that, like go to stock framework lol or the framework doesn't affect the update? Sorry for all the questions, but I don't want to risk a brick, and THEN ask many questions Thank you very much!
First of all this won't brick your phone. You have a few options:
1-download the ota zip, go into recovery, do a full wipe and flash the ota zip. (This is the quickest and easiest method. After doing this you will still have your custom recovery, and the contents of your internal storage will be untouched.)
2-Flash the factory images. (Your phone gets completely wiped, including your custom recovery.)
Sent using xda-developers app
Just go into Wugs and flash the latest firmware directly, you won't have to change anything else.
Sent from my Nexus 4 using xda app-developers app
Chromium_ said:
First of all this won't brick your phone. You have a few options:
1-download the ota zip, go into recovery, do a full wipe and flash the ota zip. (This is the quickest and easiest method. After doing this you will still have your custom recovery, and the contents of your internal storage will be untouched.)
2-Flash the factory images. (Your phone gets completely wiped, including your custom recovery.)
Sent using xda-developers app
Click to expand...
Click to collapse
Alright, thanks! according to method 1, will I lose root? If so, is it as easy as flashing supersu again, or do I have anything else to do? Thanks again!
sinnerghost said:
Alright, thanks! according to method 1, will I lose root? If so, is it as easy as flashing supersu again, or do I have anything else to do? Thanks again!
Click to expand...
Click to collapse
Yes, root will be lost. But to get it back just download the latest supersu and simply flash it via recovery. Thats all.
sinnerghost said:
So, I got the OTA notification, and before I do something stupid, I have a few stupid questions I'm on stock 4.3, rooted, unlocked bootloader, custom recovery, xposed framework and franco kernel. I read in other people's threads that in order to not brick, I should go back to stock kernel, stock recovery and I'll lose root and unlocked bootloader, correct? If so, is wug's kit still usable on 4.4 to get root/unlock back? And regarding xposed, anything I should do about that, like go to stock framework lol or the framework doesn't affect the update? Sorry for all the questions, but I don't want to risk a brick, and THEN ask many questions Thank you very much!
Click to expand...
Click to collapse
whyyyyyyyyyyyyyyy whyyyyyyyyyyyyyyyyy whyyyyyyyyyyyyy all this man just go to forum and download stock rooted 4.4 its 10 minutes out of your life and its done.. Hey if you like just wipe system dalvik and cache and upgrade you wont lose any apps but of course if this is an issue or get FC just factory reset... Its soooo simple

[Q] Want to unlock and root but use with stock rom

Is it possible to unlock bootloader, root, flash twrp and somehow flash the stock rom? If yes, where can I get the rom files for flashing with twrp?
thanks
You're already stock. You don't have to flash stock images again. Do yourself a favor and read Heisenberg's unlock/root/flash guide in the general section. Its stickied. Had everything you need to know about this device.
I've read the post already. The problem is that when unlocking the bootloader the phone is hard reseted. So after unlocking, rooting and installing twrp I would need to flash the stock rom. I just want to have root, but with stock rom.
joooe said:
I've read the post already. The problem is that when unlocking the bootloader the phone is hard reseted. So after unlocking, rooting and installing twrp I would need to flash the stock rom.
Click to expand...
Click to collapse
After unlocking it erases your user data. The system image is still there it would be as if you turned it on for the first time. You do not need to reflash stock after unlocking, rooting and installing twrp.
Good news then! Thanks!
Just follow that guide exactly as it states and you'll be golden
The folks above are correct. That's exactly what I did. I'm unlocked, rooted and running the stock rom. You can also install kernels on the stock rom w/o having to reinstall anything.
@jejb What will you do when Google launches another update and you want to have it?
That's a good question. And it seems they roll out these little updates monthly. So far, I'm just ignoring them. I wish I could find a way to remove the notification. But I'll wait until there is a meaningful update to go through the process of un-rooting. That process is in the pinned thread, too. If you can live with the systemless root, it's a lot easier to take the updates.
@joooe, your question is covered in the above mentioned guide. Look at section 10. Before doing anything to your phone, I strongly suggest reading guide in its entirety.

Updating to Oreo without losing root?

Hello, I recently got an exynos S8 and ai already installed TWRP and magisk. Is there a way to update to Oreo without losing my data and root? I barely finished setting everything up and it would be annoying to start over with a wipe
So, if We flash twrp straight after updating to oreo all data will be lost?
Use Titanium backup to get all your data back
I often change of custom ROM and I always keep all my data thanks to it
For the root, you will certainly lose it. But it takes 2min to flash the necessary file and get your root back
BigBen60 said:
Use Titanium backup to get all your data back
I often change of custom ROM and I always keep all my data thanks to it
For the root, you will certainly lose it. But it takes 2min to flash the necessary file and get your root back
Click to expand...
Click to collapse
Sounds good.Wll I have to reinstall TWRP too?
aleessio said:
Sounds good.Wll I have to reinstall TWRP too?
Click to expand...
Click to collapse
Not if you flash the ROM from TWRP.
But you will probably have to reinstall TWRP if you flash your ROM from Odin
BigBen60 said:
Not if you flash the ROM from TWRP.
But you will probably have to reinstall TWRP if you flash your ROM from Odin
Click to expand...
Click to collapse
Can you point me to an official Oreo build I can flash trough TWRP? All guides I found use odin.
aleessio said:
Can you point me to an official Oreo build I can flash trough TWRP? All guides I found use odin.
Click to expand...
Click to collapse
I'm afraid it's not possible.
Once you flash TWRP, you change the official recovery to a custom one. Once it's done, you can't get OTA anymore for example. So no more official stuffs.
If you want to get the lastest official build, you should use Odin. But it will also flash the official recovery and it will replace TWRP. So if you still want TWRP you'll have to flash it again (through Odin too and after you flashed the official firmware). But at this moment you'll lose official OTA
BigBen60 said:
I'm afraid it's not possible.
Once you flash TWRP, you change the official recovery to a custom one. Once it's done, you can't get OTA anymore for example. So no more official stuffs.
If you want to get the lastest official build, you should use Odin. But it will also flash the official recovery and it will replace TWRP. So if you still want TWRP you'll have to flash it again (through Odin too and after you flashed the official firmware). But at this moment you'll lose official OTA
Click to expand...
Click to collapse
I feared that from my experience with previous devices. I'm not so scared to reinstall TWRP and root as much as to lose my data, as I have a lot of apps that are annoying to reinstall (such as two factors authenticators or banking apps). I was thinking to try what they suggest in this post. But then, to install TWRP and root I would still need to wipe data, so it doesn't really solve my problem.
When you backup apps using titanium backup, do apps keep their data and configurations? For example, do you need to set again google authenticator or do you lose all access to your account?
aleessio said:
I feared that from my experience with previous devices. I'm not so scared to reinstall TWRP and root as much as to lose my data, as I have a lot of apps that are annoying to reinstall (such as two factors authenticators or banking apps). I was thinking to try what they suggest in this post. But then, to install TWRP and root I would still need to wipe data, so it doesn't really solve my problem.
When you backup apps using titanium backup, do apps keep their data and configurations? For example, do you need to set again google authenticator or do you lose all access to your account?
Click to expand...
Click to collapse
You keep everything as long as you restore app + data

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