[Q] Lost root access? - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I've been rooted and running Sacs ROM for a while now, but somehow I've lost root access. When I try Supersu it tells me "There is not SU binary installed, and SuperSU cannot install it..."
I have been trying different ROMS and restored from a nandroid backup using TWRP. What do I need to do to get back root access?

Can you not just reroot with CF Auto Root?

Yes, I can, but I wasn't sure if that was advisable or not given that I had root access before and somehow lost it. In any event, I re-rooted using CF auto root and all is well. What I don't understand is how I lost root access in the first place.

joelshort said:
Yes, I can, but I wasn't sure if that was advisable or not given that I had root access before and somehow lost it. In any event, I re-rooted using CF auto root and all is well. What I don't understand is how I lost root access in the first place.
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No telling why you lost it. Did you take an update?
I know I updated to NC6, lost root, but re-rooting was not an issue.

Related

[Q] Is root persistent through OTA update?

I'm looking to root my phone but I don't want to flash any new bootloader or custom roms. I'm under the impression that I'll still be able to get OTA updates if I do this. My question is if I download and install an OTA update will I still have root on the phone or will it remove root? Thanks!
psyphris said:
I'm looking to root my phone but I don't want to flash any new bootloader or custom roms. I'm under the impression that I'll still be able to get OTA updates if I do this. My question is if I download and install an OTA update will I still have root on the phone or will it remove root? Thanks!
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I was still able to receive and apply the OTA after rooting, but the OTA did cause me to lose root. But re-rooting was pretty painless.
Its sure than rooting phone you receive OTA and can install it?? If yes, I want to root my phone, only root, i dont want to change anything more for receiving OTAs.
How can I do? just only root, any link to the safest way?
Is the same way when I receive an OTA and i have to root again?
many thanks.
1. You can use an app called OTA Rootkeeper. Use it to hide root before you accept an OTA, then use it to restore root after.
2. Yes, you can use adb commands (possibly the Nexus 4 toolkit as well) to temporarily flash clockwork recovery and obtain root. You will need to unlock the bootloader though, and that will factory reset your device.
http://forum.xda-developers.com/showthread.php?t=1993331
Nospin said:
1. You can use an app called OTA Rootkeeper. Use it to hide root before you accept an OTA, then use it to restore root after.
2. Yes, you can use adb commands (possibly the Nexus 4 toolkit as well) to temporarily flash clockwork recovery and obtain root. You will need to unlock the bootloader though, and that will factory reset your device.
http://forum.xda-developers.com/showthread.php?t=1993331
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Good advice for OTA Rootkeeper! If I head down this path I'll make sure to use that. I'm still looking around for the best way to root without unlocking the bootloader or factory reseting.
Superuser contains a built in 'try and preserve root' function which worked well when I updated to 4.2.1

Rooting after update Q

My mother Nexus 10 has an update for 4.2.2 (currently rooted on 4.2.1) and I'm wondering if besides making backups is there any way to keep all the data during the rooting of 4.2.2?
Are you sure you will lose root? If you have SuperSU it has the option to enable it to try to keep root during an upgrade. OTA Rootkeeper will do the same thing for Superuser.
But if you do lose root, you should just be able to re-root without losing data. Someone else can probably answer this better than I can, but the only time you have to lose data is when you unlock the bootloader. Updating won't change that. I forgot to check the option in SuperSU to keep root before I updated last night, so I lost root but I just rerooted without losing my data.
theninjapirate said:
Are you sure you will lose root? If you have SuperSU it has the option to enable it to try to keep root during an upgrade. OTA Rootkeeper will do the same thing for Superuser.
But if you do lose root, you should just be able to re-root without losing data. Someone else can probably answer this better than I can, but the only time you have to lose data is when you unlock the bootloader. Updating won't change that. I forgot to check the option in SuperSU to keep root before I updated last night, so I lost root but I just rerooted without losing my data.
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Had to grab pro SuperSU real quick but that did it! Thanks.
Riku98523 said:
Had to grab pro SuperSU real quick but that did it! Thanks.
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Sure - that works fine. Another possibility is to download Voodoo RootKeeper, use it preserve Root (saves a copy of su), and then fire up RootKeeper again after installing 4.2.2 and use it to restore Root. Works perfectly as well.

[Q] Lost root access after 4.2.2 update

My N4 was on 4.2.1 and I managed to root it using the video guide here (http://www.youtube.com/watch?v=sV355YEDzc8&list=FLym1yJ2TTTjBZbty0DrqsKQ&index=3). It worked fine and I was using Titanium Backup with root access.
Then my phone notified me of the 4.2.2 update so I installed it OTA. I thought I still had root because SuperSU was still there. However, when I load Titanium Backup it says:
"Sorry, I could not acquire root privileges. This application will *not* work! Please verify that your ROM is rooted, and try again. This attempt was made using the /system/xbin/su" command"
I then installed a Root Checker (https://play.google.com/store/apps/details?id=com.joeykrim.rootcheck&feature=nav_result) which indicates "This device does not have proper root access".
My questions are
How do I regain root access in a way that doesn't cause a full wipe of my data?
Will I have to do this every time I apply an official Nexus update?
What is the best way to apply an official Nexus update maintaining root without having data wiped?
TIA
I personally use the toolkit and option four. Every time I install an update, I lose root, but the toolkit easily restores it each time.
Sent from my Nexus 4
I too lost my root when i got 4.2.2 OTA. I used WugFresh's toolkit and rerooted with it. I also flashed the CWM custom recovery, which I've read prompts you to keep your root after rebooting with an OTA update.
Source:
heat361 said:
If you have cwm and you install any update that breaks root it will ask of you want to keep root when you choose to reboot the nexus 4.
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This must be about the 100th time someone posts this question.
Some of you clearly are too lazy to search or read
Read this: http://forum.xda-developers.com/showthread.php?t=2145848.

Root checker says I don't have proper root access.

Hey, so my root checker is failing, and I have no idea why. I'm using TWRP and have flashed Illusion mod, however, I don't have any root access to kind of tinker with my CPU levels.
I'm basically thinking I have to re-root my device. MY question is, I spent a lot of time customizing my phone exactly to how I'd want it and I just found this out. If I back up my custom flash, and reroot my device, can I go back into TWRP and restore my backup? Will that mess anything up?
OR most importantly, does anyone know how to give full root access to an already rooted device?
Thanks! I'm almost there with my 100% customized phone, I'm VERY eager and have been having a BLAST learning all this.
ahendowski said:
Hey, so my root checker is failing, and I have no idea why. I'm using TWRP and have flashed Illusion mod, however, I don't have any root access to kind of tinker with my CPU levels.
I'm basically thinking I have to re-root my device. MY question is, I spent a lot of time customizing my phone exactly to how I'd want it and I just found this out. If I back up my custom flash, and reroot my device, can I go back into TWRP and restore my backup? Will that mess anything up?
OR most importantly, does anyone know how to give full root access to an already rooted device?
Thanks! I'm almost there with my 100% customized phone, I'm VERY eager and have been having a BLAST learning all this.
Click to expand...
Click to collapse
You won't lose anything if you reroot your device. You don't have to wipe data. Have you tried downloading supersu from the play store and letting it install the binaries? Or flashing supersu through recovery?
cruise350 said:
You won't lose anything if you reroot your device. You don't have to wipe data. Have you tried downloading supersu from the play store and letting it install the binaries? Or flashing supersu through recovery?
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Yeah, I have tried downloading supersu from the play store... but it says it cannot update the binaries. Not sure why.
I'll try flashing supersu from recovery though. Might be a better idea. If I flash supersu through recovery, will it install all the latest binaries as well? Or will I still have to update it later?
edit: flashing the SuperSU worked perfectly!!! I only tried installing it via playstore, not actually flashing it. Thanks a ton!!

Lost root after 1-2 days

I recently got a Galaxy S5 (SM-G900T with LMY47X.G900TUVS1FOJ4).
I grabbed chainfire autoroot and flashed it with the Odin 3.10.6 that came with the CF file. It successfully rooted the phone. I installed Titanium Backup and restored all the stuff I wanted from my old device.
I've been using the device for 1-2 days now and lost root. I opened TB and it says I'm no longer rooted. I confirmed this by downloading a root checker and it also says I'm not rooted.
According to TB, I had BusyBox for root. There was no application icon nor was it in my list of installed applications. When I used chainfire's autoroot on my S4, it installed a super user program that I could open from my app list.
I would really like to continue using Titanium Backup. Does anyone know how I can gain root access again? I already messed it up once by reflashing the autoroot. This caused an infinite bootloop and I eventually got out of it by doing a factory reset. I've returned my S4 to T-Mobile and don't want to soft brick my phone again.
Thanks.
Anyone have any suggestions of how I can reroot my phone?
If you successfully used cf autoroot then that's not the issue.....My money is on a deleted or disabled or un-updated super user app.... this is what will give you (or prevent you from having) root access to your device.
http://i.imgur.com/rVnFwJM.jpg
Using supersu v2.65 works well for me
whynoteel said:
Anyone have any suggestions of how I can reroot my phone?
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Some days ago I get same problem ( lost root ) because i use supersu v2.67 on cm13 for sg s5 : g900f
therefore, after installed cfroot you can use twrp 3.0.0.0 as custom recovery
Then , Download. & update supersu to v2.65 by using twrp recovery ZIP version
Thanks i'm waiting for a reply

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