So, I went and skipped through the setup process without inserting my SIM, enabled developer options and turned on ADB access, and enabled OEM unlock while I was at it. I use eclipse frequently for other devices, so I ran an update in SDK manager. My device is not showign up as an external drive, or in ADB. However when I reboot into fastboot, I get a connection just fine. I am suspecting this is a software issue on the device itself. Any ideas?
Edit: switching from MTP to PTP was the only thing that worked
Cheetohz said:
So, I went and skipped through the setup process without inserting my SIM, enabled developer options and turned on ADB access, and enabled OEM unlock while I was at it. I use eclipse frequently for other devices, so I ran an update in SDK manager. My device is not showign up as an external drive, or in ADB. However when I reboot into fastboot, I get a connection just fine. I am suspecting this is a software issue on the device itself. Any ideas?
Edit: switching from MTP to PTP was the only thing that worked
Click to expand...
Click to collapse
What showed up in Device Manager when connected as MTP? Did it perhaps say ACER Android Device or something similar to that?
PaisanNYC said:
What showed up in Device Manager when connected as MTP? Did it perhaps say ACER Android Device or something similar to that?
Click to expand...
Click to collapse
I actually did nto check device manager. but I had the safely eject Nexus 6 show up in my task bar, so it was recognizing it as a nexus.
Related
So last night I tried unlocking my bootloader so I could root my HTC One, but I've had one issue. Whenever I get to the part where you make the back up of my apps I get the following message "adb: unable to connect for backup". My phone is conncected, and I have USB debugging enabled. I also checked the device status and it keeps reporting it as offline. I don't quite know what to do, if anyone can help it'll be appreciated.
First off, I barely know anything with regards to phones as I still learning. However, last night had a similar issue and ended up having to use cmd prompt to navigate to adb and then used it to see the device.
MrTechie890 said:
So last night I tried unlocking my bootloader so I could root my HTC One, but I've had one issue. Whenever I get to the part where you make the back up of my apps I get the following message "adb: unable to connect for backup". My phone is conncected, and I have USB debugging enabled. I also checked the device status and it keeps reporting it as offline. I don't quite know what to do, if anyone can help it'll be appreciated.
Click to expand...
Click to collapse
New security enhancements in android 4.2.2 builds (and above) require the end user to explicitly grant adb access to any connecting computers before that connecting machine can successfully issue any adb commands to your device. When you connect a 4.2.2 (and above) android device to your machine (with USB debugging enabled) for the first time, you should be prompted with a confirmation message to allow or disallow USB debugging. This message will display your computers unique RSA key fingerprint and provide you a checkbox to “Always allow from this computer”. Check this box and select ‘OK’. Your device should no longer be listed as ‘offline’
If you don’t see this prompt then you should try the following:
With your device connected via usb and the toolkit running, toggle USB debugging off/on in Settings > ‘Developer Options’ and see if the prompt comes up
Also try unplugging and re-plugging the usb connection.
BD619 said:
New security enhancements in android 4.2.2 builds (and above) require the end user to explicitly grant adb access to any connecting computers before that connecting machine can successfully issue any adb commands to your device. When you connect a 4.2.2 (and above) android device to your machine (with USB debugging enabled) for the first time, you should be prompted with a confirmation message to allow or disallow USB debugging. This message will display your computers unique RSA key fingerprint and provide you a checkbox to “Always allow from this computer”. Check this box and select ‘OK’. Your device should no longer be listed as ‘offline’
If you don’t see this prompt then you should try the following:
With your device connected via usb and the toolkit running, toggle USB debugging off/on in Settings > ‘Developer Options’ and see if the prompt comes up
Also try unplugging and re-plugging the usb connection.
Click to expand...
Click to collapse
I've already done this. I had usb debugging enable since I started this. I even tried unplugging and replugging multiple times while trying to do this. Are there any other settings I need to enable?
MrTechie890 said:
I've already done this. I had usb debugging enable since I started this. I even tried unplugging and replugging multiple times while trying to do this. Are there any other settings I need to enable?
Click to expand...
Click to collapse
You have to help us with a little more info -- ADB and Fastboot just *have* to work or you'll get nowhere:
1) What OS are you using? Version included;
2) Plug in your phone, open a command window in the appropriate place and type: adb devices
Tell us the output.
If you don't get a device listed, either your drivers are bogus on your machine and need to reload, or you're not getting USB debugging setup correctly (not sure how you miss that, so I'd think the former).
tdhite said:
You have to help us with a little more info -- ADB and Fastboot just *have* to work or you'll get nowhere:
1) What OS are you using? Version included;
2) Plug in your phone, open a command window in the appropriate place and type: adb devices
Tell us the output.
If you don't get a device listed, either your drivers are bogus on your machine and need to reload, or you're not getting USB debugging setup correctly (not sure how you miss that, so I'd think the former).
Click to expand...
Click to collapse
The version of android I'm using is 4.3, for my computer I'm using OSX 10.9, and the code that is listed when I search for my device through adb is FA3A8S902431.
MrTechie890 said:
The version of android I'm using is 4.3, for my computer I'm using OSX 10.9, and the code that is listed when I search for my device through adb is FA3A8S902431.
Click to expand...
Click to collapse
Then try this:
adb backup
That should create a backup file called: backup.ab
tdhite said:
Then try this:
adb backup
That should create a backup file called: backup.ab
Click to expand...
Click to collapse
Still get the same issue I've been getting. I typed that command in, it just tells me all the options for adb, and I then retried the other command I was using and squat.
MrTechie890 said:
Still get the same issue I've been getting. I typed that command in, it just tells me all the options for adb, and I then retried the other command I was using and squat.
Click to expand...
Click to collapse
I know you don't want to read this, but you'll need to read all about Macs and this issue. A quick Google on "adb unable to connect for backup mac" brings up all sorts of folks fighting exactly what you are. I don't have a Mac -- use Linux almost exclusively, but it all appears related to either usb debugging, or a connection timeout setting.
tdhite said:
I know you don't want to read this, but you'll need to read all about Macs and this issue. A quick Google on "adb unable to connect for backup mac" brings up all sorts of folks fighting exactly what you are. I don't have a Mac -- use Linux almost exclusively, but it all appears related to either usb debugging, or a connection timeout setting.
Click to expand...
Click to collapse
For me, doing it on Linux wouldn't be a huge issue but since I have a mac as my primary machine I'm trying to make due with it.
I think I just firgured it out actually. I just had to install the android sdk, I was using the abd files provided from a tutorial. anyhow, thanks for trying to help tdhite.
I have two Nexus 6s, one completely stock and one that I just upgraded to Marshmallow. I downloaded sdk and minimal adb and fastboot today in order to install marshmallow. I just plugged in my completely stock unmodified Nexus 6 into my computer to get my photos off my stock Nexus before I send it back to amazon and although the phone charges, nothing pops up for it being a storage device, I switched it between MTP and PTP on the phone but it does nothing, the phone does not show up, same goes for the Nexus 6 that has marshmallow on it, also switched that to MTP. My computer detects the phone because it allows me to eject it from usb but that is about it. Anything else I can try? trying to get pics off the old Nexus before I send it back.
PolishDude said:
I have two Nexus 6s, one completely stock and one that I just upgraded to Marshmallow. I downloaded sdk and minimal adb and fastboot today in order to install marshmallow. I just plugged in my completely stock unmodified Nexus 6 into my computer to get my photos off my stock Nexus before I send it back to amazon and although the phone charges, nothing pops up for it being a storage device, I switched it between MTP and PTP on the phone but it does nothing, the phone does not show up, same goes for the Nexus 6 that has marshmallow on it, also switched that to MTP. My computer detects the phone because it allows me to eject it from usb but that is about it. Anything else I can try? trying to get pics off the old Nexus before I send it back.
Click to expand...
Click to collapse
btw adb sees the phone no problem
I have the same problem. Windows seems to recognize the phone, but it displays no content when I try to browse files.
Just did a clean flash of the factory image.
EDIT:
Ok, I'm an idiot... here's the solution:
http://forum.xda-developers.com/showpost.php?p=63151023&postcount=2
Yadao said:
I have the same problem. Windows seems to recognize the phone, but it displays no content when I try to browse files.
Just did a clean flash of the factory image.
EDIT:
Ok, I'm an idiot... here's the solution:
http://forum.xda-developers.com/showpost.php?p=63151023&postcount=2
Click to expand...
Click to collapse
nope that does nothing on my phone, both are set correctly at MTP or PTP, nothing works
BTW when I eject the USB it lists it as "android adb interface" I have a feeling that is why it is not showing up?
Mine just says MTP when I eject it. Did you try toggling USB debugging on and off?
Yadao said:
Mine just says MTP when I eject it. Did you try toggling USB debugging on and off?
Click to expand...
Click to collapse
I deleted the adb driver and that fixed the issue but that can't be the correct way because I think it would be pointless to have to install and delete the adb driver each time I want to use it? I knew it was more computer related than phone related but what is the correct way to make the phone work with a adb driver installed on the computer?
PolishDude said:
I deleted the adb driver and that fixed the issue but that can't be the correct way because I think it would be pointless to have to install and delete the adb driver each time I want to use it? I knew it was more computer related than phone related but what is the correct way to make the phone work with a adb driver installed on the computer?
Click to expand...
Click to collapse
I honestly don't know. I've always had mixed results. Sometimes it would work automatically, sometimes I'd have to manually install the google drivers when the phone is in the bootloader.
Had the same "problem", to fix it and for windows to show the contents of the phone, you just need to pull down the top drawer and select mtp file transfer from the USB options. It is set for " charge only" as default. Try it out!
Sent from my Nexus 6 using Tapatalk
Pull down the status bar and set charge only to transfer files
Tek-Toyz said:
Had the same "problem", to fix it and for windows to show the contents of the phone, you just need to pull down the top drawer and select mtp file transfer from the USB options. It is set for " charge only" as default. Try it out!
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Yasharkhan said:
Pull down the status bar and set charge only to transfer files
Click to expand...
Click to collapse
Exactly: it is not a problem, but just a new way to manage USB connections. You just have to pull down the status bar and choose one of the USB options for your Nexus 6
lol you guys aren't understanding, I did that and it did not fix the issue. The phone was still not recognized as a storage device. I also tried a Nexus 6 that was on 5.1.1 which does not have the charging only option in the drawer and it also was not recognized but once I deleted the adb driver from my computer, my computer saw both as storage devices when I put them into MTP mode
Go into developer settings
Make sure checked Debugging on
Then Scroll down
Look for MTP CHange it to something else in the settings
then back MTP Your computer will then see it it bug in 6.0
Follow my Video
https://youtu.be/At0auL6CQeg
Hi all,
First a quick info:
The Problem -- Nexus 6 internal storage doesn't show up when connecting to my main desktop computer.
I have had my Nexus 6 for almost a year now and since the beginning I couldn't make my main computer to recognize the phone's internal storage.
Whenever I connected the phone to another computer, the driver installed just fine and I was able to access the internal storage.
I previously had a first gen moto g and I thought the problem was because the moto g drivers were causing some mess with the Nexus so I uninstalled the old drivers and plugged my nexus so windows automatically downloaded what is shown as "Google Nexus ADB Interface" under Android device in Device manager.
I also have installed Android SDK tools in my PC since I had the Moto g and I cant remember how many times I have updated it. The Google driver is shown as installed.
The device is unlocked but not rooted.
Here comes the weird part... If I have USB debugging enabled then I can see the camera files in my PC when I choose PTP in USB configuration. However.. if I disable USB debugging then I can't even see the pictures.
I have tried selecting PTP and changing back to MTP as suggested in some threads with no luck.
I also tried turning the device off and then boot into fastboot, then plug the phone into the computer as this worked in some other computer.
This is driving me crazy, I know this is a computer related problem but I don't know what else to try.
Could you help me please?
Thanks
adrek09 said:
The Problem -- Nexus 6 internal storage doesn't show up when connecting to my main desktop computer.
Whenever I connected the phone to another computer, the driver installed just fine and I was able to access the internal storage.
Click to expand...
Click to collapse
www.wugfresh.com
Install the Nexus Root Toolkit on your PC.
In a sub directory of that kit you will find several usb drivers. Do some trial and error with those drivers.
NLBeev said:
www.wugfresh.com
Install the Nexus Root Toolkit on your PC.
In a sub directory of that kit you will find several usb drivers. Do some trial and error with those drivers.
Click to expand...
Click to collapse
Hi, thanks for the reply,
I forgot to tell that I tried that one too.
I followed the driver installation guide step by step with no luck.
Tried the recommended solution at step 3 of the guide and since it didnt work then I tried the manual installation with a couple "Bluetooth Peripheral Device" devices that are shown under Other Devices in Device manager
adrek09 said:
Hi, thanks for the reply,
I forgot to tell that I tried that one too.
I followed the driver installation guide step by step with no luck.
Click to expand...
Click to collapse
Because it works on a different PC. I assumed a driver issue.
My Suggestion is to install the driver manually.
Open the device manager.
After connecting you must see a change in the device manager. If not change USB-port and/or cable. And change on the Nexus 6 the charging
mode to data mode.
When still no 'internal storage' back to device manager and update the driver by right clicking. Try automatic and search on my computer - navigate to the drivers in NRT.
hi folks!
I recently bought a sm-t713 and i can't get my pc to recognize it in linux or windows.. i want to root and unlock the bootloader but odin cant even see it.. and its not an issue with not having debugging on. thats all turned on. Please advise. thanks!
Nobody knows why? I have oem unlock "on"
debugging "on"
But I cant get my comp to see the device..Have Samsung drivers installed. Still no luck.
How can I fix this? all it does is charge when I hook it to pc but can't transfer files.
sorry double post
Same issue here. I've had no luck sorting it out.
Gutterball said:
hi folks!
I recently bought a sm-t713 and i can't get my pc to recognize it in linux or windows.. i want to root and unlock the bootloader but odin cant even see it.. and its not an issue with not having debugging on. thats all turned on. Please advise. thanks!
Click to expand...
Click to collapse
USB Debugging and MTP use different drivers and are different protocols.
Open a command prompt in windows then type:
adb devices
You should get a response with a serial number if USB debugging is working.
If so then it's likely an MTP driver problem or MTP isn't enabled.
In developer options under USB configuration, ensure MTP is enabled.
If so check the device is detected as an MTP device in windows device manager.
ashyx said:
USB Debugging and MTP use different drivers and are different protocols.
Open a command prompt in windows then type:
adb devices
You should get a response with a serial number if USB debugging is working.
If so then it's likely an MTP driver problem or MTP isn't enabled.
In developer options under USB configuration, ensure MTP is enabled.
If so check the device is detected as an MTP device in windows device manager.
Click to expand...
Click to collapse
What the USB configuration is set to is actually moot. When the device is plugged in to a PC the tablet will bring up a notification stating what mode the USB port is in and also provide the option to change that to MTP mode (Transfer files), provided the drivers are correctly installed and all is in working order. By changing USB configuration to MTP the tablet shows up immediately on the PC but you still have to switch to "Transfer file" mode before you can move files between devices. Either way the results are the same and it takes the same number of steps. I always leave my USB configuration in "System Default" and I have never had any issues.
ashyx said:
USB Debugging and MTP use different drivers and are different protocols.
Open a command prompt in windows then type:
adb devices
You should get a response with a serial number if USB debugging is working.
If so then it's likely an MTP driver problem or MTP isn't enabled.
In developer options under USB configuration, ensure MTP is enabled.
If so check the device is detected as an MTP device in windows device manager.
Click to expand...
Click to collapse
Thanks for helping! under device manager the tablet is showing as a mass storage controller not an mtp device. Even though in the tablet itself I have it set to mtp under developer options.
When I do the command "adb devices" I get this message
C:\Users\Brian\Downloads\platform-tools_r28.0.0-windows\platform-tools>adb devices
List of devices attached
nothings there
Also I was reading this is happening because of the newest stock update from Samsung.. is that true?
Gutterball said:
Thanks for helping! under device manager the tablet is showing as a mass storage controller not an mtp device. Even though in the tablet itself I have it set to mtp under developer options.
When I do the command "adb devices" I get this message
C:\Users\Brian\Downloads\platform-tools_r28.0.0-windows\platform-tools>adb devices
List of devices attached
nothings there
Also I was reading this is happening because of the newest stock update from Samsung.. is that true?
Click to expand...
Click to collapse
No response from the adb command suggests you don't have the correct adb drivers installed or the device isn't being detected at all.
Have you installed the ADB drivers?
I would try a different cable first. Is Windows device manager detecting the device if it's plugged in/unplugged?
ashyx said:
No response from the adb command suggests you don't have the correct adb drivers installed or the device isn't being detected at all.
Have you installed the ADB drivers?
I would try a different cable first. Is Windows device manager detecting the device if it's plugged in/unplugged?
Click to expand...
Click to collapse
Still having trouble here, too.
After flashing a ROM and attempting to install what was probably the wrong Gapps version, I'm now getting a boot loop into TWRP, and the device is still not recognized. I can boot into 'Download Mode', but the device is still not being seen by my PC. I have tried multiple times to install the USB drivers, but Odin 3.12.3 is still not seeing the tablet.
Much as I hate installing hokey, bloated software, would KIES be helpful here?
So, all is not lost (yet) - I can still access TWRP, but I'm not sure where to go from here.
Thanks in advance for any ideas you have.
I
BillTheCat said:
Still having trouble here, too.
After flashing a ROM and attempting to install what was probably the wrong Gapps version, I'm now getting a boot loop into TWRP, and the device is still not recognized. I can boot into 'Download Mode', but the device is still not being seen by my PC. I have tried multiple times to install the USB drivers, but Odin 3.12.3 is still not seeing the tablet.
Much as I hate installing hokey, bloated software, would KIES be helpful here?
So, all is not lost (yet) - I can still access TWRP, but I'm not sure where to go from here.
Thanks in advance for any ideas you have.
Click to expand...
Click to collapse
Considering download mode is totally OS independent and neither uses adb nor mtp drivers it seems the issue is either incorrectly installed usb drivers or faulty cable, device or port issues.
Boot to Download mode, open device manager then plug in the usb cable.
Windows should detect the device as a USB composite device.
If there is no detection then there is a communication issue between device and PC which could be any one of the afore mentioned reasons.
No matter what windows should show some sort of detection as soon as the device is plugged in.
No detection means no matter what drivers are installed its not going to work.
It's probably worth uninstalling the usb ports then rebooting.
Then trying again.
ashyx said:
I
Considering download mode is totally OS independent and neither uses adb nor mtp drivers it seems the issue is either incorrectly installed usb drivers or faulty cable, device or port issues.
Boot to Download mode, open device manager then plug in the usb cable.
Windows should detect the device as a USB composite device.
If there is no detection then there is a communication issue between device and PC which could be any one of the afore mentioned reasons.
No matter what windows should show some sort of detection as soon as the device is plugged in.
No detection means no matter what drivers are installed its not going to work.
It's probably worth uninstalling the usb ports then rebooting.
Then trying again.
Click to expand...
Click to collapse
Well, I'll be dipped in $hit.
What's the probability that one guy could have three dodgy USB cables? Used one, wiggled it around and the PC recognized the device. Looks like I'm in for a quick trip to WallyWorld. Thanks!
ashyx said:
No response from the adb command suggests you don't have the correct adb drivers installed or the device isn't being detected at all.
Have you installed the ADB drivers?
I would try a different cable first. Is Windows device manager detecting the device if it's plugged in/unplugged?
Click to expand...
Click to collapse
yeah, windows device manager detects it as a mass storage controller. I installed the driver from samsung site. Cant be the cord cause it works with the phone. Even linux mint wont pick it up either. Any ideas? Thanks again for helping this is driving me nuts!
Gutterball said:
yeah, windows device manager detects it as a mass storage controller. I installed the driver from samsung site. Cant be the cord cause it works with the phone. Even linux mint wont pick it up either. Any ideas? Thanks again for helping this is driving me nuts!
Click to expand...
Click to collapse
Are you able to connect to the device in TWRP, either ADB or MTP?
ashyx said:
Are you able to connect to the device in TWRP, either ADB or MTP?
Click to expand...
Click to collapse
nope don't have twrp installed. and adb or mtp wont detect it. how can I install twrp? don't I need to bootloader unlock this first? And I cant do it if its not recognized by the comp right?
Gutterball said:
nope don't have twrp installed. and adb or mtp wont detect it. how can I install twrp? don't I need to bootloader unlock this first? And I cant do it if its not recognized by the comp right?
Click to expand...
Click to collapse
Are you certain this is a genuine Samsung and not a copy?
Can you post the build details from the app Phone Info.
ashyx said:
Are you certain this is a genuine Samsung and not a copy?
Can you post the build details from the app Phone Info.
Click to expand...
Click to collapse
screenshot is in the attachment.
Hello,
I got my phone brand new about 4 months ago. I rooted it and got TWRP installed with no issues. Fastboot and ADB were working fine but now when I try to connect my phone via USB and use ADB I get unauthorized whenever I type adb devices. Typically this happens because your phone is prompting you to allow the computer to have root access but I am not getting that popup window at all.
Things I've tried;
Uninstalled ADB/Updated ADB
Deleted adbkey folder under C:\Users\name\.android
Stopped and Started the adb server again after computer and phone reboot
Deleted ADB_keys folder on android in \data\misc\adb folder on phone itself, followed by a restart
Turning off then back on USB Debugging
Turning off then back on USB Debugging & Developer Options
(Including Revoking USB Debugging Authorizations both times)
Even tried copying the following from PC to phone ~/.android/adbkey.pub inside the /data/misc/adb/adb_keys
Still no luck, I'm not sure why it would just stop working out of nowhere. Nothing has changed since I used it a few months ago.
Also another strange occurrence is that if I turn off USB Debugging / Developer Options then reboot. Once the phone gets to the home screen both USB Debugging and Developer Options are enabled again without me doing it.
Anyone else have a similar issue and figure it out?
vulcanrvn said:
Hello,
I got my phone brand new about 4 months ago. I rooted it and got TWRP installed with no issues. Fastboot and ADB were working fine but now when I try to connect my phone via USB and use ADB I get unauthorized whenever I type adb devices. Typically this happens because your phone is prompting you to allow the computer to have root access but I am not getting that popup window at all.
Things I've tried;
Uninstalled ADB/Updated ADB
Deleted adbkey folder under C:\Users\name\.android
Stopped and Started the adb server again after computer and phone reboot
Deleted ADB_keys folder on android in \data\misc\adb folder on phone itself, followed by a restart
Turning off then back on USB Debugging
Turning off then back on USB Debugging & Developer Options
(Including Revoking USB Debugging Authorizations both times)
Even tried copying the following from PC to phone ~/.android/adbkey.pub inside the /data/misc/adb/adb_keys
Still no luck, I'm not sure why it would just stop working out of nowhere. Nothing has changed since I used it a few months ago.
Also another strange occurrence is that if I turn off USB Debugging / Developer Options then reboot. Once the phone gets to the home screen both USB Debugging and Developer Options are enabled again without me doing it.
Anyone else have a similar issue and figure it out?
Click to expand...
Click to collapse
Go Here and download the Fastboot drivers. follow the directions on the razor dev portal. I had the same issue and this fixed it for me. https://developer.razer.com/razer-p...94.1708481542.1586624574-305520188.1586475530
If your adb-server is not started with root/admin rights, your phone will never prompt you for authorization unless you choose a different USB Mode (MTP, PTP, etc.) than Charge Only. I suspect this is done to prevent certain malicious actions being performed without the user being aware.
If you start your adb-server with root/admin rights (by typing "sudo adb start-server", make sure you've killed your existing daemons before doing so), you can use ADB while in Charge Only mode, provided you've subsequently authorized the PC to do so. However, unlike normal adb server, the fingerprint may occasionally change and you may need to redo the authorization again.