Hi,
Unlocked and rooted stock 4.2 JOP40C Nexus 10, all has gone well. Root was successful, and apps like Titanium Backup, DataSync, and so on that require root all work fine.
However, when trying to mount /system in ES File Explorer or FileManager I get a message saying 'failed to mount system'. I'm trying to install the AOSP Browser but it won't let me paste the apk, nor will it let me change permissions for the folder.
I've tried downloading a couple of apps that say they will mount /system, but although I don't get an error message, /system doesn't mount either.
I'm stumped. Root was successful, but for some reason this isn't working.
Incidentally, before I unlocked and rooted the tab wouldn't take the 4.2.1 update with stock recovery. I assumed once I'd rooted I'd be able to apply a new ROM with TWRP. Backups work fine, but I get a status 7 on trying to install a new ROM. Could this be related - i.e, is TWRP also having trouble mounting /system?
Any clues would be very helpful! I've never had this much trouble rooting a Nexus device - currently own GNex and N7, and no problem rooting those...
Thanks.
Are you sure you have root? Check SuperSU or Superuser is installed. I always use SuperSU. Open the app & make sure binaries have updated.
Sent from my Nexus 10 using Tapatalk 2
djd338 said:
Are you sure you have root? Check SuperSU or Superuser is installed. I always use SuperSU. Open the app & make sure binaries have updated.
Sent from my Nexus 10 using Tapatalk 2
Click to expand...
Click to collapse
The phone was rooted before I installed the rom. I don't have any apps on the phone right now because in the installation instructions, it said to do a clean swipe if installing the rom for the first time. So right now I don't have any apps.
Related
I rooted my Nexus 7 a few days ago and was able to replace bootanimation. But now I want to replace my new version of bootanimation using Root Explorer, I found I have no super user access (the terminal prompt does not change from $ to # when I type su at the adb shell). The /system is mounted as r/o. I also have the busybox and supersu zip files on the sdcard. Can anyone please tell me what happen here and help me back to su mode? Thanks in advance!!
KJTseng said:
I rooted my Nexus 7 a few days ago and was able to replace bootanimation. But now I want to replace my new version of bootanimation using Root Explorer, I found I have no super user access (the terminal prompt does not change from $ to # when I type su at the adb shell). The /system is mounted as r/o. I also have the busybox and supersu zip files on the sdcard. Can anyone please tell me what happen here and help me back to su mode? Thanks in advance!!
Click to expand...
Click to collapse
I can't see any reason why you'd become unrooted unless you either replace the system partition (via an update or rom change or fastboot flash or whatever) or delete the binary yourself. If you didn't do either of those it could be either a problem with supersu, a problem with the binary, or a problem with your kernel. Try putting the root binary (su) back on the phone and trying again, and if that fails try using SuperUser instead of Supersu. If neither work you may need to do a factory reset and try again.
did you upgrade to 4.1.2? You must have lost root during the process. Just re-root it. I used the toolkit.
cooljais said:
did you upgrade to 4.1.2? You must have lost root during the process. Just re-root it. I used the toolkit.
Click to expand...
Click to collapse
oh, yes!!!! I just upgraded a couple of days ago from JRO03D to JZO54K. THANK YOU!!
I tried re-rooting again (w/o flashing custom recovery) after I upgrade Nexus Root Toolkit to v1.5.4 t support 4.1.2, But get stuck at the message "waiting for your device to finish booting back up." Nexus 7 is at the TWRP mode and can't get out of it. So I reboot to bootloader mode and eventually the toolkit tells me to run SuperSU and Busybox. Still doesn't work since I still don't have super user access. What shall I do next? I know there are still few more steps after the TWRP.
this may have been asked, but i'm new to the nexus 7. i rooted it right away, and put TWRP on. probably shouldn't have but i like doing nandroids. i was excited for the OTA and want to just install it since my tab got it, but it won't obviously since i've got a custom recovery (duh i should've thought of that..) and i don't want to go flashing roms yet (i like keeping everything stock right away, it's so smooth)
so my question is, is there a way to go back and flash the stock recovery somehow so i can OTA, then put TWRP back on? i can't find the stock file to fastboot flash or anything
You can either download the OTA update manually and flash via TWRP. or do a full 4.2 stock ROM
http://forum.xda-developers.com/showthread.php?t=1989158
Warning: there have been mixed results from the early adopters on the OTA patch. I was running 4.1.2, TWRP, and SuperSU. I lost both SuperSU and TWRP when I upgraded and a handfull of apps are not working right with the new multi user file structure.
The way I did it was
1) Download the OTA zip from the thread I posted above
2) Moved that to SD Card (I moved via Google Drive, you can use USB if you want) I did the whole thing while waiting for a flight without a computer handy
3) Reboot to TWRP Recovery
4) Flash OTA Zip
To get Root and TWRP back I did the following (note, I have SuperSU pro and the survival mode was checked)
1) disabled SuperSU and reenabled which prompted to update Binaries
2) flashed TWRP via ROM Toolbox
kangy said:
You can either download the OTA update manually and flash via TWRP. or do a full 4.2 stock ROM
http://forum.xda-developers.com/showthread.php?t=1989158
Warning: there have been mixed results from the early adopters on the OTA patch. I was running 4.1.2, TWRP, and SuperSU. I lost both SuperSU and TWRP when I upgraded and a handfull of apps are not working right with the new multi user file structure.
The way I did it was
1) Download the OTA zip from the thread I posted above
2) Moved that to SD Card (I moved via Google Drive, you can use USB if you want) I did the whole thing while waiting for a flight without a computer handy
3) Reboot to TWRP Recovery
4) Flash OTA Zip
To get Root and TWRP back I did the following (note, I have SuperSU pro and the survival mode was checked)
1) disabled SuperSU and reenabled which prompted to update Binaries
2) flashed TWRP via ROM Toolbox
Click to expand...
Click to collapse
thanks kangy! i also lost both when i flashed.
the reason it didn't work was that i frogot i played with my build.prop and had apps frozen on titanium.
so i disabled and reenabled SuperSU, but no prompt to update.
i'm using rom toolbox now to install but it keeps telling me install failed...basically because it doesn't have root i presume. any ideas?
Alright try this.
Go to SuperSU settings and and click on Reinstall under Cleanup, it will give you a prompt and tell you it will self close and to re-install from the market. (Mine never fully uninstalled which I assume is due to it being flashed to ROM, I checked under the App manager and it only had a downgrade option so) Anywho. If it did uninstall go ahead and redownload it from the market, if it didn't check the market anyway, the Dev published and update for it to help with 4.2 multi users.
Once you get it reinstalled and/or updated from the market go back to the settings and Toggle off Enable Superuser, close the app, re-open and then re-enable superuser. You probably will want to give it a reboot at this point. (Ive restarted my device a hundred times since going to 4.2 from trying to work through the bugs. Once you restart test a root app. I used Adaway for the test. Important, if the app fails or gives an error about not having root, try again. After I went through all of those motions SuperSU was pretty slow for a while with giving root access, usually the second request from the app wakes it up. Since then though it is back to being snappy with zero lag.
Yes, the reason you can't flash TWRP through ROM Toolbox is that requires root. Once you get your SuperSU working try flashing the latest TWRP again, it should only take a few seconds to flash. Let me know how it goes, I'm subscribed to the thread. I may not be the smartest guy on XDA but you are in the same exact boat I was last night!
jayochs said:
thanks kangy! i also lost both when i flashed.
the reason it didn't work was that i frogot i played with my build.prop and had apps frozen on titanium.
so i disabled and reenabled SuperSU, but no prompt to update.
i'm using rom toolbox now to install but it keeps telling me install failed...basically because it doesn't have root i presume. any ideas?
Click to expand...
Click to collapse
First, determine if you have root or not. Open TiBackup, if it opens correctly and you can see all your apps listed, you have root. Otherwise it will say "Failed to obtain root," and quit.
If you have root, then great. If not, you can flash the SuperSU zip in TWRP/CWM: http://download.chainfire.eu/282/SuperSU/CWM-SuperSU-v0.98.zip
I haven't tried flashing superSU, I've always flashed Superuser zip [google "superuser zip"], and then installed superSU from Play store.
Once you have root..
Go to Settings > Security and check allow installation from non-market apps, and uncheck the security feature that checks all apps for being malicious.
Then try it. If you still cannot restore apps, you might have to install them with adb.
I just updated someone's N7 to 4.2, and as usual I backed up everything in TiBackup.
Then I backed up the TitaniumBackup directory [because I had to do a full factory reset].
I then extracted all the .apk.gz files with gunzip. [in linux OR adb: $ gunzip *.apk.gz -- for windows, I suppose you would have to use 7-Zip].
Then I tried to install with pm:
Code:
for i in *.apk; do pm install $i; done
But every one was giving me an error, INSTALL_FAILED_INVALID_URI, I couldn't figure it out. Found a thread said to chmod 755 /data/local, but that did not fix it.
So what I had to do, was on my linux PC:
Code:
for i in *.apk;
do adb install "$i"
done
So I finally was able to batch install my apk files.
after that I restored all apps data.
Nandroid back ups not possible after 4.2 update
After updating my rooted N7 to 4.2 OTA I re-rooted using Wug's Nexus Root Toolkit 1.5.5 and realized that Nandroid back ups are failing.
I had no problem creating such back ups while on 4.1.2 and using his Toolkit 1.5.3. I guess the reason may be that the 1.5.5 Toolkit does not have the latest build incorporated.
Yordan5 said:
After updating my rooted N7 to 4.2 OTA I re-rooted using Wug's Nexus Root Toolkit 1.5.5 and realized that Nandroid back ups are failing.
I had no problem creating such back ups while on 4.1.2 and using his Toolkit 1.5.3. I guess the reason may be that the 1.5.5 Toolkit does not have the latest build incorporated.
Click to expand...
Click to collapse
why are you even using a toolkit? it's a nexus!...
Root by flashing Superuser zip or superSU zip in CWM/TWRP.
Make nandroid backups in CWM/TWRP, and you should have no problem.
mvmacd said:
why are you even using a toolkit? it's a nexus!...
Root by flashing Superuser zip or superSU zip in CWM/TWRP.
Make nandroid backups in CWM/TWRP, and you should have no problem.
Click to expand...
Click to collapse
NRTK 1.5.5 would not flash the 4.2 custom rom I fed it either. Just kept stalling out with errors that it could not find the zip file.
So I booted into TWRP and flashed it with no problem at all.
I also did backup in TWRP and checked everything but saw no mention that is was a Nandroid backup. How can I be sure?
i'm trying to nandroid back to a 4.1.2 nandroid i have, problem is, twrp has different directories for nandroids in 4.2 than 4.1.2...so it can't find the old nandroids and i can't find the 4.2 dir where twrp stores them now. ugh. such a damn headache for an update that it turns out i didn't want lol
Read my post below, I was having the same problem but got back on 4.1.2. You have to use the twrp explorer and relocate the twrp files since 4.2 moved them.
http://forum.xda-developers.com/showthread.php?t=1992552
Nandroid Downgrade from 4.2 to 4.1.2
Sent from my Nexus 7 using Tapatalk 2
I am running Nexus 7 with 4.2.1 build JOP40D.
After I got the 4.2.1 OTA update I noticed root was no longer working.
I went into Settings and Apps and disabled it and tried using SuperUser but discovered that it didn't work with 4.2.1
I used the Google Nexus_7_ToolKit_v4.0.0 and ran the root command choosing SuperSU which was the correct one for 4.2.1.
It did a cleanup of any other root stuff and successfully pushed root to the device.
It did not show up in the App Drawer, but does show up in Settings, Apps, All.
I tried again by sideloading via CWM recovery but there was no difference.
I then ran the toolkit to remove root, busybox, etc, then attempted to reinstall them both again.
I am still stuck with the same problem.
When running a root app such as Titanium Backup, it gets stuck at "asking for root rights" and not the 'you need to root your device' message.
Any help?
[edit]
When installing busybox it checks and says you should see the reply
system/xbin/busybox
but the reply I get is
system/bin/busybox
Is this a problem?
DazFromTaz said:
I am running Nexus 7 with 4.2.1 build JOP40D
After I got the 4.2.1 OTA update I noticed root was no longer working.
I went into Settings and Apps and disabled it and tried using SuperUser but discovered that it didn't work with 4.2.1
I used the Google Nexus_7_ToolKit_v4.0.0 and ran the root command choosing SuperSU which was the correct one for 4.2.1.
It did a cleanup of any other root stuff and successfully pushed root to the device.
It did not show up in the App Drawer, but does show up in Settings, Apps, All.
I tried again by sideloading via CWM recovery but there was no difference.
I then ran the toolkit to remove root, busybox, etc, then attempted to reinstall them both again.
I am still stuck with the same problem.
When running a root app such as Titanium Backup, it gets stuck at "asking for root rights" and not the 'you need to root your device' message.
Any help?
Click to expand...
Click to collapse
1. you need to flash the su binaries in your recovery, latest su binaries http://download.chainfire.eu/298/SuperSU/CWM-SuperSU-v0.99.zip
2. or you need to install busybox if you already flashed the binaries. you can find free busybox installer apps in the play store. best one is by stericson.
That's what confuses me. I have flashed the su binaries via recovery and also installed busybox.
Downloaded the busybox from Play Store now though. It can't install with root though.
Remember, SuperSU is showing up in Settings, Apps, All, it just doesn't seem to be usable or showing up in app drawer.
DazFromTaz said:
That's what confuses me. I have flashed the su binaries via recovery and also installed busybox.
Downloaded the busybox from Play Store now though. It can't install with root though.
Remember, SuperSU is showing up in Settings, Apps, All, it just doesn't seem to be usable or showing up in app drawer.
Click to expand...
Click to collapse
delete supersu from either /data/app/ or /system app/, wherever you have it installed. then reboot into recovery and wipe cache and dalvik. after, reboot and reinstall supersu app.
are you sure that you flashed the latest su binaries? if not sure, flash the one that i linked while youre in your recovery.
simms22 said:
delete supersu from either /data/app/ or /system app/, wherever you have it installed. then reboot into recovery and wipe cache and dalvik. after, reboot and reinstall supersu app.
are you sure that you flashed the latest su binaries? if not sure, flash the one that i linked while youre in your recovery.
Click to expand...
Click to collapse
Thankyou again for your response.
I deleted superuser.apk using adb, then cleared the caches. I then rebooted recovery, sideloaded the latest superuser (from the link provided) and then booted into Android.
Same as before. Superuser is not in the app drawer, but can be seen in settings.
Remember when I said I disabled it in Settings, Apps?
Well it turns out that Google remembers this, even when the app is removed and reinstalled. It will not show that it is disabled when you check it in Settings though.
To fix, I disabled again, then enabled it. Boom fixed.
Feel rather sheepish now.
Although you pushed me to learn quite a bit more about adb so thanks for that!
DazFromTaz said:
Remember when I said I disabled it in Settings, Apps?
Well it turns out that Google remembers this, even when the app is removed and reinstalled. It will not show that it is disabled when you check it in Settings though.
To fix, I disabled again, then enabled it. Boom fixed.
Feel rather sheepish now.
Although you pushed me to learn quite a bit more about adb so thanks for that!
Click to expand...
Click to collapse
no matter how it was "fixed", its still a :victory: congrats
WooooooW!!!!!! Banging my head with this one until I found this thread. Crazy but it worked, after I did all that the OP said he did.. Thanks..
I'm a bit confused. I'm on my Nexus 7 right now which is running a custom ROM. I can boot into bootloader as well as Clockwork Recovery. However when I just tried to run a backup using titanium, it told me my device is not rooted. Superuser is installed. How can this be? How do I gain root access so I can backup my apps before putting on a new ROM?
abdeviation said:
I'm a bit confused. I'm on my Nexus 7 right now which is running a custom ROM. I can boot into bootloader as well as Clockwork Recovery. However when I just tried to run a backup using titanium, it told me my device is not rooted. Superuser is installed. How can this be? How do I gain root access so I can backup my apps before putting on a new ROM?
Click to expand...
Click to collapse
Download to your Nexus 7, Chainfires SU updater package from here...
http://download.chainfire.eu/310/SuperSU/UPDATE-SuperSU-v1.04.zip
Reboot into CWM/TWRP (whichever recovery you're running) and flash it...
(You should find it in the /download folder)
Reboot as normal... you should be rooted.
Rgrds,
Ged.
GedBlake said:
Download to your Nexus 7, Chainfires SU updater package from here...
http://download.chainfire.eu/310/SuperSU/UPDATE-SuperSU-v1.04.zip
Reboot into CWM/TWRP (whichever recovery you're running) and flash it...
(You should find it in the /download folder)
Reboot as normal... you should be rooted.
Rgrds,
Ged.
Click to expand...
Click to collapse
So I followed what you said but I was still getting the no root error when launching titanium. Then I went into settings and uninstalled the SuperSU app and viola! Everything is working now
You probably had root disabled under development settings, as is the default. By installing and uninstalling SuperSU, you may have overridden that security setting. It is important to check whether an app is actually handling such requests; otherwise any app could get root without your knowledge.
Sent from my Nexus 7 using Tapatalk HD
Hi, I have a Samsung Galaxy S4 from ATT and I rooted my phone about 4 months ago using a downgrade to MK2 method.
Everything was working fine until I had one app (Puzzles and Dragons, japanese version) that apparently doesn't like it when SuperSU is on. I turned SuperSU off, only to realize that I had to change the Superuser.apk file in /system/app as well (i don't know why but this app hates on superuser). Now since /system/app files are all read only, I need root access again to modify the file name. However, when I start up SuperSU again, it tells me there is no SU binary installed, and that I need to manually re-root.
I'm trying to find a way around this, and a couple of people said to boot into recovery and install the .zip file for SuperSU. I went ahead and downloaded SuperSU-v2.02.zip, and put it on my phone, and booted into Safestrap recovery. When I try to install it, it says "unable to mount '/system'" and "unable to mount '/systemorig'"...
Another round of google-ing. Apparently Clockwork Mod Recovery (CWM) is the solution. But now that I've disabled SuperSU, I no longer have root access, so CWM doesn't work!
****. Do I really have to manually re-root? Every time I root using the downgrade-root-upgrade-keeproot method I wipe everything on my phone, and I'd really like to not wipe my phone. Is there a way around this?
TL;DR: I'm looking for a fix to any of the following:
1. no SU binary installed
2. unable to mount '/system' and '/systemorig'
3. rooting NC1 that doesn't wipe all of my data
Thanks in advance.
EDIT: Towelroot saves the day. Still working on getting P&D Japanese to work.