[Q] OTA 2.3.7 update lost SU permissions - Nexus S Q&A, Help & Troubleshooting

Nexus S 4g
I did the one click root month or 2 ago and gained unlock and SU permissions. My phone updated to 2.3.7, last week. I decided to load CWM today and discovered I no longer had permissions. I've tried several things and am stuck.
Nothing in ROM manager will work properly. I get message: "error occured while attempting to run priviledged commands" for fix permissions, or load other CWMR (that worked in the past I had to put an earlier one in to be able to access recovery in bootloader). If I try to backup, apply .zip, etc it just never reboots.
If I go to bootloader and go into recovery, each time it shows unlock, then the triangle with an exclamation point (so I can't backup, restore previous backup, anything)
I managed to grab SU 3.0 and force it to install over my existing 2.3.6, it did, sees my su (which is in system/bin which I've read is a problem ) as being outdated and wants to update it, fails each time.
So someone smarter than me please advise. My phone is functioning nicely without FCs or other issues, a normal boot or reboot goes fine, but I fear for the day I really need my backup. Not to mention frustrating that I seem to be locked out from making any changes now.
Thanks, Travis

sobamaflyer said:
Nexus S 4g
I did the one click root month or 2 ago and gained unlock and SU permissions. My phone updated to 2.3.7, last week. I decided to load CWM today and discovered I no longer had permissions. I've tried several things and am stuck.
Nothing in ROM manager will work properly. I get message: "error occured while attempting to run priviledged commands" for fix permissions, or load other CWMR (that worked in the past I had to put an earlier one in to be able to access recovery in bootloader). If I try to backup, apply .zip, etc it just never reboots.
If I go to bootloader and go into recovery, each time it shows unlock, then the triangle with an exclamation point (so I can't backup, restore previous backup, anything)
I managed to grab SU 3.0 and force it to install over my existing 2.3.6, it did, sees my su (which is in system/bin which I've read is a problem ) as being outdated and wants to update it, fails each time.
So someone smarter than me please advise. My phone is functioning nicely without FCs or other issues, a normal boot or reboot goes fine, but I fear for the day I really need my backup. Not to mention frustrating that I seem to be locked out from making any changes now.
Thanks, Travis
Click to expand...
Click to collapse
You're "locked out" because you don't actually have root access. The OTA update chmods /system recursively (and as a result /system/bin and /system/xbin).
The triangle with the exclamation mark is the stock recovery (applied with the OTA update).
I'm not entirely sure what you've tried as it's a very easy process.
-Download CWM for your device - flash it using fastboot.
-Boot into recovery and flash the su binary via recovery. This will place the binary appropriately as well as chmod it.
-Done
-Profit?

krohnjw said:
You're "locked out" because you don't actually have root access. The OTA update chmods /system recursively (and as a result /system/bin and /system/xbin).
The triangle with the exclamation mark is the stock recovery (applied with the OTA update).
I'm not entirely sure what you've tried as it's a very easy process.
-Download CWM for your device - flash it using fastboot.
-Boot into recovery and flash the su binary via recovery. This will place the binary appropriately as well as chmod it.
-Done
-Profit?
Click to expand...
Click to collapse
Oddly I was getting the triangle intermittently from the get go, but I had been able to get around it by applying an earlier clockworkmod version in Rom Manager. I'm not able to do that now.
My whole problem is I'm unable to do anything at all in Fastboot. If I go to "recovery" to try and apply anything I get the triangle.
Am I missing something?
It does say "Lock State - Unlocked" in fastboot if that means anything.

sobamaflyer said:
Oddly I was getting the triangle intermittently from the get go, but I had been able to get around it by applying an earlier clockworkmod version in Rom Manager. I'm not able to do that now.
My whole problem is I'm unable to do anything at all in Fastboot. If I go to "recovery" to try and apply anything I get the triangle.
Am I missing something?
It does say "Lock State - Unlocked" in fastboot if that means anything.
Click to expand...
Click to collapse
Yeah, you have the stock recovery. You can't apply a new recovery through rom manager because the su binary doesn't have the appropriate permissions since the update.
Boot into the boot loader (Vol up and pwr). Don't go into recovery. Use fastboot from the boot loader to load CWM. Boot into CWM after flashed and flash the SU binary (mount /system first). After this boot up and delete/rename /etc/install-recovery.sh so that it won't overwrite CWM on each reboot. Install CWM again from Rom Manager or via fastboot (as it was overwritten on boot). Done.

Since you are being nice enough to try and help an id10t (apparently) and others may have the same issue and search this I'll ask the dumb questions. (I did a bit of googling a min. ago and found others with the same things I see but didn't get any further...).
When you say "go into Fastboot" you mean opening SDK Manager on my PC while I'm in the Boot Loader Screen?
At the bottom of the screen I see:
USB Control Init
USB Control Init End
[plug in usb get:]
STANDARD_SET_CONFIGURATION
Nothing shows up in SDK, I have the black CMD screen up but can't type anything at all in it?
......I did try loading pda_net (not sure what to do with that? but it was mentioned elsewhere) and I get a grey message at the bottom of the screen that says "FASTBOOT STATUS - FAILinvalid Command"

sobamaflyer said:
Since you are being nice enough to try and help an id10t (apparently) and others may have the same issue and search this I'll ask the dumb questions. (I did a bit of googling a min. ago and found others with the same things I see but didn't get any further...).
When you say "go into Fastboot" you mean opening SDK Manager on my PC while I'm in the Boot Loader Screen?
At the bottom of the screen I see:
USB Control Init
USB Control Init End
[plug in usb get:]
STANDARD_SET_CONFIGURATION
Nothing shows up in SDK, I have the black CMD screen up but can't type anything at all in it?
......I did try loading pda_net (not sure what to do with that? but it was mentioned elsewhere) and I get a grey message at the bottom of the screen that says "FASTBOOT STATUS - FAILinvalid Command"
Click to expand...
Click to collapse
Fastboot is merely a command line tool used for various operations on the device. Mainly though you'll use it to flash an image to a specific partition.
You'll need to boot the device into the boot loader (hold Vol up and power on).
Plug the device in via USB.
Open a command windows in the tools or platform-tools folder of the SDK (depending on your version of the SDK, where the fastboot.exe can be found) and issue the fasboot devices commmand. This should display the serial of any connected devices. If this comes back blank there is an issue with the installed driver. Reinstall the USB driver for the device using the supplied driver from an updated SDK.
Assuming fastboot devices shows one device you now can flash a recovery to the device. Download the appropriate recovery for your device (i9020(a), i9203 or NS 4G) http://mirror.sea.tdrevolution.net/cm/recoveries/. Place this file in the same directory for simplicity.
At this point you can flash your recovery.
fastboot flash recovery file.name.you.downloaded.img
If it is not in the same directory you can alternatively pass the full path to the image.
You now have a custom recovery installed. Select Recovery from the bootloader menu to now boot into this recovery.
Assuming you've already downloaded the su binary and it is on your SD card, mount /system from within CWM and then chose to install zip and select this from the SD card. You now have root access.

Now that a panic attack is settling...
I think I'm getting somewhere but not yet where I want to be. I go to Bootloader, I connect my USB and don't get anything different than above from my sdk tools menu (unusable cmd screen, fail showing on my phone). What does [eventually] work is going back to my "nexus S one click root" folder and clicking run.bat (as fastboot.exe and adb.exe in that folder also do the nothing).
This run.bat reads some sort of fail and boots my phone telling me that debugging is not checked (which it is) and takes me directly to there, then the cmd screen tells me to press enter when I've turned on the [already checked] usb debugging toggle.....what the hell I press enter. Now it goes into the old beautiful CWMR (3.0.xxxx) screen where I'm able to apply .zips, backup etc.
(luckily I think ahead and do a backup right this min.)
Then I go from that screen and decide to apply my new CM7.zip that started all this, I apply that and get a bootloop on the CM7 boot screen.......crap......I go clear my davlik and cache and install CM7 again. Same thing.....crap......
I try restoring my original backup from 9/5/11 I made right after first unlocking my phone.......CM7 bootloop screen.....dammmmiiiiit
I try restoring backup from 9/12 I made after getting everything just like I wanted it.......CM7 bootloop screen.......uh oh, panic beginning.
I restore the backup from a few lines ago, my phone comes back (thank god)
So:
-I have to have the right USB driver in my laptop because something from sdk ultimately talked to my phone?!
-Clockworkmod recovery 5.xxxx has never worked quite right for me, apparently 3.xxxx is still my magic answer?!
-Now that I've gotten this far should I try the same process to get back to my CWMR 3.xxxx screen and put some different files in my root to use than what I've done to this point?
....again, I apologize if I'm being myopic or asking dumb questions. I often say I only know just enough to be dangerous.

[SOLVED] - maybe/sort of
Between reading (and re-reading) the help above and continued research on my own I [think] I solved my problem.
I found the following 2 links:
http://theunlockr.com/2009/10/06/how-to-set-up-adb-usb-drivers-for-android-devices/
http://theunlockr.com/2010/12/17/how-to-root-the-samsung-nexus-s/
And basically started over from scratch, I deleted what I'd put in my pc and re-loaded using those instructions (in the right place, the right way). Doing this I was able to pull up a cmd window and this time it properly accessed my phone. I got it to fastboot recovery - load CWM 5.0... and from there got into my recovery menus on my phone this time.
One curious thing....I tried the part VI in "how to root the samsung" ...""stop the phone uninstalling the custom recovery image"...... I've tried several things there but still get an error that it is read only.
....I went on to install CM7, and it consequently updated right after to the latest CM7, At this moment I have full permissions, superuser access, was able to make a backup of yesterday, the CM7 this morning and then CM7.1.0.1 that loaded.
Will I ultimately have the same issue as before? But be able to overcome it in the same manner when I want to?
Thanks for the help

This is why one click methods are bad. When a problem arises you have no clue what to do because a software did it for you the first time. Glad you got it figured out.
Sent from my Nexus S 4G using xda premium

Related

[Q] failure after root and tried to recovery

Hi there I have a Nexus S with 4.04 on it, so the other day I followed the instruction online and tried to root the phone, I have phone driver installed, and able to unlock my bootloader, the LOCK STATE is UNLOCKED. and I was able to flash Clockworkmod recovery v5.0.2.0.
But after this step, and I tried to reboot, my phone just stuck at the google logo with the unlock sign at the bottom, and wouldn't do anything afterward. (seems like a root loop?)
I tried pulling off the batt a few times but no good. I am still able to lock and unlock bootloader through cmd.(just like in normal state)
I tried to install factory img as shown in the thread http://forum.xda-developers.com/showthread.php?t=1572307. but when I type in the first line "adb reboot bootloader", it says adb devices not found.
so, any idea on how I can restore back to the factory img?
bootloader version i9020xxkl1
model GT-i9020T or if any more info is needed I will be here.....>.<
Did you correctly installed the recovery?
Hi.
First at all let me tell you that I'm not an expert. So, I understand that you should double check this.
I think that you should try to:
- If you have successfully installed the ClockworkMod recovery, you should turn on the device on recovery mode. Vol up + on pushbutton to go inside bootloader. Going down with Vol down, go to recovery and select with on pushbutton.
- Download the correct superuser app for your version. I would double check the md5sum of the file that you have downloaded on your computer.
- Mounting the usb storage of the device on your computer, add the superuser app on /sdcard.
- Umount the usb storage.
- Flash the superuser app, installing from /sdcard from your recovery menu.
- Download a custom kernel on your computer, once that you are unlocked. I'm using CyberGR, and I'm happy with it. You can see all the intallation instructions in the Nexus S development part.
- I that works, I would try to install the kernel in a clear way. For installing the CyberGR ROM, you need to wipe everything and format all. After that, you mount the device on the computer, and try the installation.
Then, if everything is ok, the device will turn on.
Again, I'm not an expert, and I don't know how you can be in contact with the developers that are posting in the developers area. I'm not responsible if your device doesn't works or get bricked.
However, I understand that all that I have described, should not put your device in a worst situation.
And is it doesn't turn on, if it doesn't do anything, then, you can use the linux tooll for bicked devices explained on the developers area.

[Q] Asus bricked, wiped system and data, no fastboot, working adb, cant mount sd card

First things first, I am using the SL101 but as I could not find a place for that, I figured this is the best place for this post.Also I hate posting and creating new threads but there is absolutely no other thread like this, I have been searching for 3 days.
So I rooted my SL101 using vipermod with ease, then downloaded ROM manager but I think here is where I hit an issue, When cwm was installed it asked for me to confirm my device and the only device available to click was "Asus Transformer". As every other transformer tf101 firmware has worked on my tablet, I thought it would be fine. Then I was in the process of flashing Revolver 4.2.1 and my battery went flat so that was not ideal and this is when the issues began.
I booted into cwm recovery (vol- + power and then vol+ on the splash screen) and tried to "install zip from sdcard", I got the "Cant mount sdcard" dialog. I then rebooted and tried to flash the rom from ROM manager, when it rebooted, cwm went through a 20 second loop waiting for sdcard, and it did not find the sdcard so the operation was aborted. I tried a factory reset through cwm and when it rebooted, I would get the splash screen and the ASUS logo with the spinning dots loading, but it would not go past that (bootloop?). From here I could not access the OS at all.
Again into cwm and used the peri OneClick R&R Easyrecoveryv0.4. It went through all the unbricking dialog with three reboots, but one of the commands said it could not find "sdcard/recoveryblob". The system still did not work. I then put it into APX mode (vol+ and power) and installed the APX driver, used the download.bat method but the minute it opens commandprompt, it immediately disconnects the APX driver, the tablet remains in APX mode. This method did not work.
Somewhere along the lines I also managed to format the system and data so not when I turn it on it just goes into the splashscreen with the EEEpad logo and nvidia Tegra.
Also tried adb push to push revolver rom onto the system /sdcard/ directory, that works fine but then again it cant mount sdcard so I cant actually do anything with it. adb devices lists the device as 0123456789ABCDEF recovery. Finally I did try boot twrp.img using fastboot with the "fastboot boot twrp.img" command but it hangs on "waiting for device". fastboot devices also does not list any devices.
So I basically have a tablet whose cwm cant mount sdcard, adb works, fastboot doesnt see the device and I can only go onto cwm on the tablet or splashscreen. Can somebody help me out? I have spent a long time trying to fix this.
Fixed
Hi again, sorry for the double post but after posting that I realised the answer was pretty much staring me in the face and now this has been fixed. so this thread can be closed by the bigdogs.
For future reference to anybody who has this or a similar problem, especially if you format the system and fastboot is not working, the issue is cwm v6.0.1.3 (cant mount sdcard issue), I used the PERI oneclickrecovery v0.4. The unbrick selection did not work for my slider as I had already pretty much wiped any data from the system that could have been salvaged by the unbrick, but if you press "r" in the main menu it flashes a new recovery tool over cwm, and this new tool can access external sdcard so just upload the rom zip file onto there and flash. :fingers-crossed: Revolver 4.2.1 is now flashed and working. :victory:

[Q] Trying to Root.

I accepted the latest over the air update and I need to know if that messed up my chances of obtaining root. I tried photon torpedo and could not get it to work. My device says it is unlocked but I can not boot into recovery. I have flashed several recoveries using sdk-tools but I cannot erase any recoveries. I receive an error. I have tried several things and am at a loss to as what is the most recent way if there is one. Looking for someone with more experience then I to guide me. I previously rooted my EVO 4g and EVO 3d and was away from internet for about 9 months so I mistook the old Motorola Photon for the Photon Q. Didn't realize till way later that I was trying some rooting techniques intended for the old photon on my photon q. Anyways I feel a bit lost. Any help would be greatly appreciated. I can provide any information requested. Will be monitoring this thread all day today and will provide quick responses. Cheers!
Uhm... You tried the rooting steps for the Photon?
I really hope you didn't brick your device - that is a SURE fire way to do it tho.
Anyhoo, why haven't you just tried the official unlock from Moto?
arrrghhh said:
Uhm... You tried the rooting steps for the Photon?
I really hope you didn't brick your device - that is a SURE fire way to do it tho.
Anyhoo, why haven't you just tried the official unlock from Moto?
Click to expand...
Click to collapse
I did try that first. And successfully as far as I know because my bootloader says unlocked. I then went to install supersu and It won't install su binary. Tried to force install su binary and that did not work either. Any ideas? I joined the military so I was busy for 9 months straight. Honestly I'm usually more up to date than that. I think it's an understandable mistake and I understand the risks behind rooting. I bricked my first phone 7 years ago and brought it back using putty.
sent17inel said:
I did try that first. And successfully as far as I know because my bootloader says unlocked. I then went to install supersu and It won't install su binary. Tried to force install su binary and that did not work either. Any ideas? I joined the military so I was busy for 9 months straight. Honestly I'm usually more up to date than that. I think it's an understandable mistake and I understand the risks behind rooting. I bricked my first phone 7 years ago and brought it back using putty.
Click to expand...
Click to collapse
You didn't truly brick the device if you were able to bring it back using putty...
Regardless, you should always be careful with anything you do. Why are you trying to install the SuperSU binary right after unlocking? You need to flash a custom recovery first.
Or do you already have a custom recovery? I'm kinda lost here, you seemed to indicate you were unable to get a custom recovery flashed, but you're trying to force SuperSU without a custom recovery...?
arrrghhh said:
You didn't truly brick the device if you were able to bring it back using putty...
Regardless, you should always be careful with anything you do. Why are you trying to install the SuperSU binary right after unlocking? You need to flash a custom recovery first.
Or do you already have a custom recovery? I'm kinda lost here, you seemed to indicate you were unable to get a custom recovery flashed, but you're trying to force SuperSU without a custom recovery...?
Click to expand...
Click to collapse
Soft bricked . . . I tried to flash a custom recovery. I Tried 2. CW and another one that I can't remember at the moment. They both said they flashed successfully but I was unable to boot into any of them. I got the android with an exclamation mark. I tried to erase them and it gave me an error. Some kind of permission error. I did this all a few days ago. Decided to take a break. Honestly "you should always be careful with anything you do" . . did that really need to be said?
sent17inel said:
Honestly "you should always be careful with anything you do" . . did that really need to be said?
Click to expand...
Click to collapse
Hey, I'm not trying to force SuperSU to apply without a custom recovery here... one step at a time is all I'm trying to say.
Let's get on with it...
sent17inel said:
Soft bricked . . . I tried to flash a custom recovery. I Tried 2. CW and another one that I can't remember at the moment. They both said they flashed successfully but I was unable to boot into any of them. I got the android with an exclamation mark. I tried to erase them and it gave me an error. Some kind of permission error. I did this all a few days ago. Decided to take a break.
Click to expand...
Click to collapse
So you haven't been able to flash a custom recovery. When you flash, it says successful? Perhaps try again. Follow the directions carefully.
arrrghhh said:
Hey, I'm not trying to force SuperSU to apply without a custom recovery here... one step at a time is all I'm trying to say.
Let's get on with it...
So you haven't been able to flash a custom recovery. When you flash, it says successful? Perhaps try again. Follow the directions carefully.
Click to expand...
Click to collapse
I did try again about 5 minutes ago. It says that it won't unlock because it's already unlocked.
I got into the stock recovery. adb reboot recovery and then it will display a green android laying down with a red exclamation point. From there I hit both volume keys and it brings up the stock recovery menu. I should be able to go from here. I think the Update I did changed some things that caused the CW recovery to not flash right or to be rewritten before I can boot into it. I should be good now. Thank you for your help.
sent17inel said:
I got into the stock recovery. adb reboot recovery and then it will display a green android laying down with a red exclamation point. From there I hit both volume keys and it brings up the stock recovery menu. I should be able to go from here. I think the Update I did changed some things that caused the CW recovery to not flash right or to be rewritten before I can boot into it. I should be good now. Thank you for your help.
Click to expand...
Click to collapse
So you managed to flash custom recovery? I didn't mean to say you should try to unlock again - I meant you should try flashing recovery again (CWM, TWRP).
arrrghhh said:
So you managed to flash custom recovery? I didn't mean to say you should try to unlock again - I meant you should try flashing recovery again (CWM, TWRP).
Click to expand...
Click to collapse
With the over the air update it installs a shell script that forces the install of the stock recovery. When you reboot into the stock recovery you are presented with an image that looks like it has failed (android laying down with stomach open and a red exclamation point over it.) it will not do anything from here and eventually time out and reboot itself. If when it is at this image you press both volume keys you will be presented with a Recovery menu. I can take it from here. Thank you.
sent17inel said:
With the over the air update it installs a shell script that forces the install of the stock recovery. When you reboot into the stock recovery you are presented with an image that looks like it has failed (android laying down with stomach open and a red exclamation point over it.) it will not do anything from here and eventually time out and reboot itself. If when it is at this image you press both volume keys you will be presented with a Recovery menu. I can take it from here. Thank you.
Click to expand...
Click to collapse
Ok... Good luck.
Thread moved. Please post in the correct forum sections in future. All questions belong here in Q&A.
Thanks
AvRS
unlocking nd rooting visuals
can someone who owns Photon Q 4G LTE do a visual on rooting nd unlocking the bootloader cause was thinking bout getting this phone & dont wanna brick the phone i have read the guide's nd done tons of reseaching but found no visual's on how to do it can someone help pls?
thanks in advance
1300 said:
can someone who owns Photon Q 4G LTE do a visual on rooting nd unlocking the bootloader cause was thinking bout getting this phone & dont wanna brick the phone i have read the guide's nd done tons of reseaching but found no visual's on how to do it can someone help pls?
thanks in advance
Click to expand...
Click to collapse
Well, I was going to ask you where you are stuck in the process, but it sounds like you haven't even purchased the device yet...
I wouldn't worry about unlocking and rooting until the device is in your hands. We can help out a lot easier when you actually have the thing, hahaha.
To answer your question, I don't think there's any visuals because it's not a very visual thing. fastboot is anything but visually-appealing, and the process is rather dry. Just follow the steps carefully and you'll be fine. It's very straightforward.
Plus you must decide if you prefer to keep the bootloader LOCKED or UNLOCKED and still have root access. Research the differences in the two.
The only thing simple is the belief in simplicity.
Similar problem
Hey, I have similar problem here
I tried to root my phone using howtos on internet, but when I flash cwm img (first try from howtos, second try from CWM page), it take only a second (in every howto is it should take few minutes). But it returns that cwm was flashed sucessfully. Still.... its weird.
Then - when I want to reboot to CWM, I can see only that dead poor green thing. I tried to upload the superuser zip from here, but it returns "signature verification failed".
I still belive, there IS CWM recovery, because img was flashed sucessfully (or am I wrong?) so i tried to reboot to CWM via adb.
And another problem has appeared. ADB doesn`t recognise my phone. I installed the newest drivers from moto pages (USB drivers bit 4.7.1 and DeviceManager 2.3.4) have USB debugging mod ON, restarted my computer (win7 64bit), tried stand on my head, kill black ****.... it still returns "device not found".
Any ideas how to get to the next step? Functional adb would be great...
How long took you to flash cwm image?
Thx
D.Eternity said:
Hey, I have similar problem here
I tried to root my phone using howtos on internet, but when I flash cwm img (first try from howtos, second try from CWM page), it take only a second (in every howto is it should take few minutes). But it returns that cwm was flashed sucessfully. Still.... its weird.
Then - when I want to reboot to CWM, I can see only that dead poor green thing. I tried to upload the superuser zip from here, but it returns "signature verification failed".
I still belive, there IS CWM recovery, because img was flashed sucessfully (or am I wrong?) so i tried to reboot to CWM via adb.
And another problem has appeared. ADB doesn`t recognise my phone. I installed the newest drivers from moto pages (USB drivers bit 4.7.1 and DeviceManager 2.3.4) have USB debugging mod ON, restarted my computer (win7 64bit), tried stand on my head, kill black ****.... it still returns "device not found".
Any ideas how to get to the next step? Functional adb would be great...
How long took you to flash cwm image?
Thx
Click to expand...
Click to collapse
Let's take a step back here.
If you DON'T have ADB, you're NOT going to be able to flash CWM.
Make sure you establish an ADB connection BEFORE trying to flash again.
Good luck.
arrrghhh said:
Let's take a step back here.
If you DON'T have ADB, you're NOT going to be able to flash CWM.
Make sure you establish an ADB connection BEFORE trying to flash again.
Good luck.
Click to expand...
Click to collapse
Ok, but when I ask for fastboot devices, it returns my device (and I can work with fastboot commands). When I type adb device, it returns empty list. How is it possible?
D.Eternity said:
Ok, but when I ask for fastboot devices, it returns my device (and I can work with fastboot commands). When I type adb device, it returns empty list. How is it possible?
Click to expand...
Click to collapse
fastboot and adb are kind of separate things...
You can't access adb when the phone is in fastboot mode, and you can't access fastboot when the phone is in recovery or booted into a ROM. However, in recovery or when booted adb should work. If it's still failing make sure you're using the factory USB cable. Also, try a different port or computer.
Good luck.
arrrghhh said:
fastboot and adb are kind of separate things...
You can't access adb when the phone is in fastboot mode, and you can't access fastboot when the phone is in recovery or booted into a ROM. However, in recovery or when booted adb should work. If it's still failing make sure you're using the factory USB cable. Also, try a different port or computer.
Good luck.
Click to expand...
Click to collapse
I know fastboot and adb are separate things, this is why I assumed cwm recovery image was flashed succesfully (despite it took only a few seconds). Now I`m trying to get into CWM, but when my phone is plugged (standard mode), adb reboot recovery returns Device not found. I haven`t the original cable here, but in the office (where I have motorola cable) it was the same. Truth is both my computers are Win7 64bit. Is it possible adb has problem with 64bit system?
Thank you for helping me

After rooting my nexus 5 is not booting up with non stop booting animation

I have a nexus 5 16 GB and i downloaded the recent software update android 6.0.1 and then I decided to root and I used 'Nexus root toolkit v2.06' and first unlocked the bootloader and then rooted. Everything worked fine but after the process was complete it was rebooting and the booting animation went on and on for many hours and the device did not root. I really don't know what's going on. My purpose is to install a custom rom: cyanogenmod 12. Now what should I do ???? PLEASE HELP. When i try to enter recovery mode it shows a picture of the android mascot with opened back and exclamation and cannot enter command as well. and after some time the booting animation begins and goes on and on...
please help...
nexus_5_ said:
I have a nexus 5 16 GB and i downloaded the recent software update android 6.0.1 and then I decided to root and I used 'Nexus root toolkit v2.06' and first unlocked the bootloader and then rooted. Everything worked fine but after the process was complete it was rebooting and the booting animation went on and on for many hours and the device did not root. I really don't know what's going on. My purpose is to install a custom rom: cyanogenmod 12. Now what should I do ???? PLEASE HELP. When i try to enter recovery mode it shows a picture of the android mascot with opened back and exclamation and cannot enter command as well. and after some time the booting animation begins and goes on and on...
please help...
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Unless something has changed, version 6. requires that you flash a special kernel before you can root your phone otherwise you are as you are now, stuck in a boot loop. You should probably download the factory image from Google, and then flash the system image to get rid of what you have done.. Perhaps then your phone will start normally
funnel71 said:
Unless something has changed, version 6. requires that you flash a special kernel before you can root your phone otherwise you are as you are now, stuck in a boot loop. You should probably download the factory image from Google, and then flash the system image to get rid of what you have done.. Perhaps then your phone will start normally
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Thank you very much for the reply, I really do have no idea as to how to flash the factory image because i am very new in this area. Could you please recommend software and which factory image i should download, please ?? thanks very much.
:good:
funnel71 said:
Unless something has changed, version 6. requires that you flash a special kernel before you can root your phone otherwise you are as you are now, stuck in a boot loop. You should probably download the factory image from Google, and then flash the system image to get rid of what you have done.. Perhaps then your phone will start normally
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Click to collapse
Also, you mentioned a 'special kernel' what does that mean. All i want to do to my device is install cyanogenmod 12 and for that i believe it needs to be rooted, so i am really confused. What should I do know
I'm having this same problem, and unfortunately, when I start the phone on fastboot, I can not access the recovery mode in order to upload a factory image of nexus 5.
I used the new tool available her for quick flash, and now, I don't have a phone.
First, don't panic. Your phone is still very easy to recover. Unfortunately I can't get you a complete walkthrough here (for now at least), so I'll give you the main idea and you'll have to do your homework (as maybe you should have done before).
1. You need to get fastboot working on your computer. It's included in the Android sdk package, but there might be some easier way to get it. Google it. You might need drivers for your pc too. Google it as well.
2. Then you need to get into fastboot mode on your phone. To do it, hold down power button AND volume down button until it gets into fastboot mode. You will see an android on his back with the cover open. At this point, connect your phone to your pc, open a terminal on your pc and type "fastboot devices" without the quotes "". It should find your phone if fastboot is working. If it doesn't work go back to step 1.
3. Download TWRP recovery on your pc and place the img file in the same folder as your fastboot executable (not mandatory but easier). It can be found here https://dl.twrp.me/hammerhead/
4. Always in fastboot mode, type "fastboot flash recovery twrp-2.8.7.1-hammerhead.img" assuming you downloaded that file, which you should have by the way. It should install fine. If you haven't placed the file in the same directory as your fastboot executable, you will need to provide the path to your img file as well.
5. Then use the volume rocker to switch between modes and choose reboot recovery.
6. You should now be in TWRP recovery. At this point, download a custom kernel (anyone found on xda for hammerhead should do) and push it to your phone. It should be fairly simple with TWRP. Then flash your new kernel using install. It should help you get your phone booting normally. Alternatively, you can download a custom ROM like cm12.1 and flash it altogether. It will install everything needed for your phone to boot up too. Beware if flashing a ROM though, I strongly advice you to do a factory reset before flashing it. You will find that option in the wipe menu.
Hope it helps, let me know if you need further assistance.
Yesterday, I have tried everything to have my computer to recognize the "fastboot" command, and I installed like 2 or 3 different programs for that. With my old Windows 7, I have been able to push a flashed image to fix this issue, using the fastboot command, but with Windows 10, it's always telling me it's not a valid command. I'll keep trying it, otherwise, i'll have to "resurrect" my old Windows XP computer.
Also, I noticed now that, while trying to install the fastboot, as per some files that I could download, but no file has been copied into my computer, not even if I run it as admin.
fixed. but no RECOVERY mode options....
Hi Guys,
Thank you very much for the help, I have finally recovered the phone and running android 6.0 MRA58N but it is not rooted. Now if you don't mind could you teach me how to root because i have checked lots of videos and tuts but none worked for me...
IMPORTANT:
when i am in recovery mode why cannot I access options even when i press volume up + power button and release them at the same time...????
Thanks in advance.
Just flash a custom recovery via fastboot. Just make sure your bootloader is unlocked. Can't link though.
hi guys i have used nexus 5 mobile with cyanogenmod 14.1 .It worked properly in 1 year. after that suddenly switched off and it not properly boot up .i try to switch on my mobile , first it show google with unlock logo properly and when it show cyanogenmod logo it stuck and again show google with unlock logo....i try recovery mode to wipe and flash the same rom ....the process is interrupt at middle stage and again show the google..i try lots of time . after few try that process finished completely without interrupt. then use my mobile 1 day same as i used first time root. after that same problem occur on my mobile ..so help me guys
@[email protected], possible power button problem?

[Completed] Boot loop on LG-v909 after Supersu "update binary" via "cwm/twrp" without custom reco

Boot loop on LG-v909 after Supersu "update binary" via "cwm/twrp" without custom reco
I'm stuck in a Boot loop on LG-v909, after Supersu "update binary" via "cwm/twrp" without custom recovery or unlocked bootloader. (It doesn't have an SD slot either.) Fastboot no longer works.
I originally had it rooted, on stock rom, about a week ago. It was working great (confirmed with Root Checker), then, a few days ago, I ran kingroot, to try to "clean up" and try to see what kind of settings they had. After that, I noticed that I was no longer rooted. So I uninstalled that app, and checked back with Supersu, that I had, installed still.
I checked the box (clean to remove other root managers) and then rebooted. Still no root, so I double checked, to make sure that I (actually) didn't have root access anymore, and installed Root Checker. I ran it and, of course, it said it was not rooted anymore.
After that, I fastbooted into CWM (I haven't unlocked bootloader, due to the fact that it is impossible to find the bootloader files anywhere. *I found the bootloader files now*) In CWM, I installed the newest Supersu.zip, thinking that would fix the "need to update the binary" problem (as you can tell, I don't know exactly what that means. I was thinking it was the zip file, out of date.)
After reboot; still no root (in Root Checker.) So, after that, I opened Supersu, and when the "update binary" popped up, I checked the update "reboot into CWM/Twrp Recovery", thinking that I can fastboot (somehow) into CWM, and update.
*After I did that, the tablet won't start*
When I push the reset button, on the back, with a pen;
it starts,
shows the LG logo,
and then, at the top of the screen, it says "[HASVALIDKERNELIMAGE] Remove secure storage", in red letters,
and then it goes to CWM recovery 5.0.2.7
I have no idea how it gets to this, as I didn't install cwm, or even unlock the bootloader (Which is what I think the problem is.)
I'm thinking that if I can somehow get the bootloader unlock zip onto the tablet, I can install it, from this cwm; the problem is, I'm not sure how to get the files from my computer, onto the tablet (there is no SD slot).
Fastboot will not connect either. When I put into fastboot mode, and run cmd, on the computer, doesn't even show up, in the fastboot devices anymore, like it used to.
I can boot into MDP mode, and the computer detects it, but I don't know what commands I can do, or even how to use that mode. Also APX mode.
So I'm basically stuck, not sure where to go from here.
TacoMoFoKo said:
I'm stuck in a Boot loop on LG-v909, after Supersu "update binary" via "cwm/twrp" without custom recovery or unlocked bootloader. (It doesn't have an SD slot either.) Fastboot no longer works.
I originally had it rooted, on stock rom, about a week ago. It was working great (confirmed with Root Checker), then, a few days ago, I ran kingroot, to try to "clean up" and try to see what kind of settings they had. After that, I noticed that I was no longer rooted. So I uninstalled that app, and checked back with Supersu, that I had, installed still.
I checked the box (clean to remove other root managers) and then rebooted. Still no root, so I double checked, to make sure that I (actually) didn't have root access anymore, and installed Root Checker. I ran it and, of course, it said it was not rooted anymore.
After that, I fastbooted into CWM (I haven't unlocked bootloader, due to the fact that it is impossible to find the bootloader files anywhere. *I found the bootloader files now*) In CWM, I installed the newest Supersu.zip, thinking that would fix the "need to update the binary" problem (as you can tell, I don't know exactly what that means. I was thinking it was the zip file, out of date.)
After reboot; still no root (in Root Checker.) So, after that, I opened Supersu, and when the "update binary" popped up, I checked the update "reboot into CWM/Twrp Recovery", thinking that I can fastboot (somehow) into CWM, and update.
*After I did that, the tablet won't start*
When I push the reset button, on the back, with a pen;
it starts,
shows the LG logo,
and then, at the top of the screen, it says "[HASVALIDKERNELIMAGE] Remove secure storage", in red letters,
and then it goes to CWM recovery 5.0.2.7
I have no idea how it gets to this, as I didn't install cwm, or even unlock the bootloader (Which is what I think the problem is.)
I'm thinking that if I can somehow get the bootloader unlock zip onto the tablet, I can install it, from this cwm; the problem is, I'm not sure how to get the files from my computer, onto the tablet (there is no SD slot).
Fastboot will not connect either. When I put into fastboot mode, and run cmd, on the computer, doesn't even show up, in the fastboot devices anymore, like it used to.
I can boot into MDP mode, and the computer detects it, but I don't know what commands I can do, or even how to use that mode. Also APX mode.
So I'm basically stuck, not sure where to go from here.
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Click to collapse
Hello,
Thanks for using XDA Assist.
There's no dedicated forum for your device here in XDA.You can post your query in Android Q&A,Help and Troubleshooting or in one of the noob friendly Q&A thread here->[Ask Any Question][Newbie Friendly] .Experts there may be able to help you
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