Database Users

ADB does not find device

Hi all,
I've searched the forums (honestly), but I can't find an answer to my problem.
I have a Vodafone branded 32B phone.
I installed the AndroidSDK as supposed to, added the path, made the phone root, booted into the recovery console using fastboot and flashed my phone with different operating systems... but during all this time I hever got ADB to work.
Whatever I do, adb never finds the phone. Fastboot works and finds it, when it's in fastboot mode, but ADB never. So, I can't permanently install the recovery console nor do any of the other funky stuff.
ADB doesn't work when the phone is in fastboot mode nor normally operating. I have USB Debugging turned on. The phone works normally and I can access the SDCard just fine.
Any help?

Suggestion.
Look into purchasing a G1 to be kept as a spare and used for development. That's what I've done with my G1. GParted is within most recovery images nowadays, therefore you can do most anything there, well...important functions that is. Keep that in mind.
You might need to uninstall the driver that recognizes your phone, then manually install the updated driver.

Reignzone said:
You might need to uninstall the driver that recognizes your phone, then manually install the updated driver.
Click to expand...
Click to collapse
that's what i had to do to get it to recognise my phone.
i'm pretty sure the driver came with SDK. either way i've attached the one i used.
go into device manager and update the driver it's currently using with the attached one.

Incorrect driver.
It should be the 1st driver listed in the Android SDK file.
As far as I know, you could also choose to push ADB to your system32 file folder under the C: drive in your computer. That is if you're using a Windows machine.

just a thought
Are you on windows or linux? If you're in ubuntu try sudo adb ... the default unprivilaged user doesnt automatically have access to the device.
If you're in Windows I would uninstall the Android Phone device in device manager and reboot with the phone disconnected. Then connect it and install the usb driver from the sdk when prompted. Might also pay to download the sdk again.

Install HTC Sync
Another known way to fix the issue is to download and install HTC Sync http://www.htc.com/au/SupportViewNews.aspx?dl_id=573&news_id=169
This seems to install the correct drivers
For more info check the Wiki:
http://wiki.xda-developers.com/index.php?pagename=HTC_Sapphire_Hacking#sec02

Hey Guys,
Forgot to mention I'm on Windows Vista 64 bits.
That last suggestion did the trick. I went to the site and downloaded the HTCDriverUpdate_Vista_64bits.exe, and within seconds I had an ADB connection.
Thanks for your help!

fastboot help?

in cmd
fastboot devices (shows my serial) but when I try to fastboot flash recovery recovery-clockwork-herring.img it keeps saying error: device not found and I cant for the life of me figure out what's wrong. I have tweeted a few people with no luck...

Try this
shug24 said:
in cmd
fastboot devices (shows my serial) but when I try to fastboot flash recovery recovery-clockwork-herring.img it keeps saying error: device not found and I cant for the life of me figure out what's wrong. I have tweeted a few people with no luck...
Click to expand...
Click to collapse
Try resetting your phone and your computer then try again

like a reboot? that hasn't helped yet...

yeah exactly- hmmm try re-installing the drivers

where can I find the samsung drivers and I am trying to do that again now.. but I am not sure what drivers you are talking about specifically.

shug24 said:
where can I find the samsung drivers and I am trying to do that again now.. but I am not sure what drivers you are talking about specifically.
Click to expand...
Click to collapse
you have to get the drivers through android sdk
(with phone usb connected)
device manager
Android Device
right click
update drivers
click browse my computer then next and then click install
if it doesnt give you that option let me know

okay I am having problems there. First, it doesn't recognize an android device, it says unknown device and it won't take any drivers I have followed the pdanet steps, and I have tried the galaxy s drivers with no luck...

okay there is your problem now we are getting somewhere,
do you have android sdk
if yes do you know how to install packages

I have tried this on two 64bit machines and one x86 the one I am on now.. and can't get it to work. I feel like a total newb but this is not a new thing to me ( rooting/unlocking etc) I have had a g1 since the release, then a nexus one since release and just got the nexus s yesterday and have struggled with this one..

what do you mean by install packages, and I appreciate your help

okay no problem it took me a bit to figure it out too.....there arent samsung drivers for this phone they come straight from google through android sdk. im assuming you have it and im going to assume its in this directory if you did eveything right with your n1
c:/androidsdk
in the directory there is a file called SDK setup.exe open it
once it opens do yourself a favor and click cancel dont ask why just do it
now thats out of the way there is 5 options on the left pane of the android sdk window click settings.
then at the bottom of that window is a box under misc. by force http..make sure its checked
then on the left pane goto then available packages
click them all to save yourself trouble and then on the bottom right install packages
let me know when thats done

doing it now - not sure if this helps or not but I had done this last night on a different pc - unfortunately that is at home and I am on my work laptop right now.
and... done.

okay now go back into the device manager and right click on unknown device
update/re-install/install whichever it says then when it asks search or browse
BROWSE
c:/androidsdk/googleusb driver
and watch the magic happen

okay a few things: first it says e: now for the phone under portable devices second, there is no google usb drivers, so I tried it just under the AndroidSDK folder and all the following and it said:
The best driver software for your device is already installed. WPD Filesystem Volume Driver
thoughts?

go back to the sdk setup.exe expand the boxes under available packages and read me what you see

is this where you are asking me to display from? http://www.twitpic.com/3gwnus
OR here: http://www.twitpic.com/3gwo9i

let me save you the trouble
unzip cut and paste to your androidsdk folder
http://www.multiupload.com/Y3T61793BP

yes and paste the file i sent you into that folder

now it still says the best driver is already installed...

uninstall your phone

[Q] ADB not recognizing, please help

Okay, I have a permarooted MT4G with S=Off, and I want to use the gfree method to unlock my SIM and get the universal CID while I'm still on the stock kernel. All of the guides I see for that push the gfree files using the ADB.
Problem: I cannot get the Android SDK to recognize my MyTouch 4g. (SEE UPDATE)
I followed this guide http://forum.xda-developers.com/showthread.php?t=834748 to try and set up the ADB to no avail. This is what I did:
-- Downloaded the SDK, booted it up, let it update. Booted it up again, let it update EVERYTHING (took like 30 minutes) again. It has no more updates to install.
-- I tried adding adb as an environmental variable in windows, but the command prompt, no matter where I start it from, does not recognize 'adb' as "an internal or external command, operable program, or batch file." (works now)
-- The HTC Drivers that came with my device have been installed on my computer. So, I uninstalled them, only to have windows reinstall them as soon as I plug the device in (I'm running Windows 7 x64 home edition, Build 7601).
I tried going here http://forums.t-mobile.com/t5/HTC/HOW-TO-Get-ADB-to-recognize-your-myTouch-4G/m-p/540017 and using their technique, no dice. My computer has the exact same drivers as when I started, and I have a digital paperweight of a SDK. (see update)
UPDATE: I now have a working ADB (big thanks to TrueBlue_Drew and his guide for us noobs) that recognizes my MT4G, but I have another issue:
FINAL QUESTION: Now that my MT4G is showing up in ADB, I realized I screwed up again when I discovered a "Android 1.0" item in the misc. section of my Devices window in Control Panel. It currently says that Android 1.0 needs troubleshooting and the drivers aren't working. I tried to direct windows to the usb drivers I downloaded from the both of the guides I've used, but windows wouldn't accept either one. Am I using the wrong drivers? Which ones should I tell windows to install? Should I even worry about it since adb is working? Any help on that end would VERY MUCH appreciated.

If you are using true blues method are you changing your target folder to c:\adb?
Sent from my HTC Glacier using Tapatalk

neidlinger said:
If you are using true blues method are you changing your target folder to c:\adb?
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
Do you mean the target of the environmental variable? If so, then no, because the name of the folder is android-sdk-windows, making the target C:/android-sdk-windows/tools, unless I'm totally off-base, which is probably what's happening.
Still, I don't think the target is C:\adb, cause I don't have anything in the root of my C drive that's named adb

corruptsmurf said:
Do you mean the target of the environmental variable? If so, then no, because the name of the folder is android-sdk-windows, making the target C:/android-sdk-windows/tools, unless I'm totally off-base, which is probably what's happening.
Still, I don't think the target is C:\adb, cause I don't have anything in the root of my C drive that's named adb
Click to expand...
Click to collapse
Is the adb.exe file in your tools folder? Also you should change the name of your SDK folder just so that its easier to type in the terminal. I made mine simply ANDROIDSDK.
Sent from my HTC Glacier using XDA App

Have you installed the drivers successfully? Here's what I do and it's worked on multiple computers and on both Windows 7 and XP:
- Install SDK
- Turn on USB Debugging on the phone.
- Plug the phone into the computer and let it try to install some stuff. Ignore any dialogs saying there were errors
- Mount the SD card and run the HTCDriver.exe file that came on the sd card when you got the phone.
- Unplug it from the computer and plug it in again.
- Open a command prompt and navigate to the tools subfolder of the android sdk. Run adb devices. (Even if the first time doesn't return your device's serial number, it should say that it's installing more drivers. Once that completes, adb devices should return your S/N and you should be good to go.)

So close, yet...
TJBunch1228 said:
Is the adb.exe file in your tools folder? Also you should change the name of your SDK folder just so that its easier to type in the terminal. I made mine simply ANDROIDSDK.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
Actually no, adb.exe isn't It has a .txt named "Adb has moved," not really sure how to proceed from here; I downloaded the SDK that was in the topic I linked above, and just allowed it to update. More below, and thanks for the response.
jdkoren said:
Have you installed the drivers successfully? Here's what I do and it's worked on multiple computers and on both Windows 7 and XP:
- Install SDK
- Turn on USB Debugging on the phone.
- Plug the phone into the computer and let it try to install some stuff. Ignore any dialogs saying there were errors
- Mount the SD card and run the HTCDriver.exe file that came on the sd card when you got the phone.
- Unplug it from the computer and plug it in again.
- Open a command prompt and navigate to the tools subfolder of the android sdk. Run adb devices. (Even if the first time doesn't return your device's serial number, it should say that it's installing more drivers. Once that completes, adb devices should return your S/N and you should be good to go.)
Click to expand...
Click to collapse
Yeah, the problem is that my PC doesn't list any errors when I plug it in. BUT BIG NEWS, I followed the ADB for noobs guide (http://forum.xda-developers.com/showthread.php?t=928370), and I realized, as I said above, that my adb.exe file was nowhere to be found, so I used the one from the noob guide, and it could recognize my device in ADB. BUT it could not recognize my device in fastboot, so after much frustration, I decided to uninstall the drivers and reinstall using pda.net. Whatever it did, it worked, because adb and fastboot both show my serial number under devices. Thanks to the both of you for your help.
FINAL QUESTION: Now that my MT4G is showing up in ADB, I realized I screwed up again when I discovered a "Android 1.0" item in the Misc. section of my Devices window in Control Panel. It currently says that Android 1.0 needs troubleshooting and the drivers aren't working. I tried to direct it to the usb drivers listed in the both of the guides listed above, but windows wouldn't have it. Am I using the wrong drivers? Which ones should I tell windows to install? Should I even worry about it since I can use adb anyhow? Any help on that end would VERY MUCH appreciated.

[USB Drivers] Galaxy S GT-I9000 (Working on ICS)

Hello.
And bacon and spam:
I've recently upgraded my SGS to ICS (ICSSGS ROM) and started to develop a simple application.
So, now i've got to the point that the emulator starts to show its limitations, so i need to debug directly on the real device.
Well, i've been trying to make ADB recognize my phone, tried several usb drivers from several sites, none of them worked.
After several hours spanking windows, it's finally working (yes! almost 6 AM in the morning!).
What matters:
So, to anybody who have the same problem as i had, do the following:
0. Uninstall any drivers that you've tried before.
1. Extract the zip file that i've uploaded to anywhere you like.
2. Enable debugging on your phone and connect it to PC throught the USB cable
(Just connect it, don't mount)
3. On your computer, click Start -> Right click on "Computer" -> Manage
This will open the "Computer Management" window (it might take some seconds to load).
4. Click "Device Manager". Now you should find your device in the list. It must be really easy to find. It's called something like "GT-I9000" or "GalaxyS" and it has a yellow warning sign next to it.
5. Right click on it and choose "Update Driver Software". In the window that appears, choose "Browse my computer for driver software". It then asks you where is the driver.
6. Click the "Browse" button and choose the folder you extracted from my zip file.
(If you didn't change it, it must be called "Android Composite ADB Interface")
7. Click "Next" and cross your fingers. If you're lucky, it may work for you.
Final notes:
1. I'm not responsible for ANYTHING. Whatever you do, it's your own choise to do it. I guarantee absolutely nothing.
2. This is was tested on Windows 7 - 64 bits with Team ICSSGS RC4.2 ROM and Semaphore ICS 0.9.1 Kernel.
3. Have fun.
4. If you try this, please answer the topic and tell everybody if it's working for you (mentioning your Windows version and what ROM you use).
Driver file:
-> http://www.mediafire.com/?t8ekrd9ly3mwwbk

Missing file when installing driver on windows 7 x64
Hi,
I have recently installed the most recent Dark Knight ICS 4.0.4 build to my Samsung Galaxy S. The ROM seems very good but I'm an android app developer and need to be able to debug my applications on the device via USB.
I have tried the driver provided in the thread which won't install due to a missing file according to the Windows 7 x64 driver install wizard. The exact message is displayed after step 7 and says:
"Windows found driver software for your device but encountered an error while attempting to install it."
"Android Composite ADB interface"
"The system cannot find the file specified".
Is there a file missing in the package? Has anybody managed to get this driver working?
Cheers,
Ben

Does it say that it doesn't find a controller or that is there a missing file?
Anyway, please try this installer and let me know if it works for you:
http://www.mediafire.com/?v70501cxbzzdvc2

What's wrong with the Nexus S drivers available with Android SDK?
Google USB driver, R4 developer.android.com/sdk/win-usb.html
The SGS will present it self like that when it is running ICS/CM7/CM9.
Sent from my GT-I9000

METEMEDO said:
Does it say that it doesn't find a controller or that is there a missing file?
Anyway, please try this installer and let me know if it works for you:
http://www.mediafire.com/?v70501cxbzzdvc2
Click to expand...
Click to collapse
Dont work for me.
System: Windows 7 x64
Android 4.04 Dark Knight
Nevertheless thanks for your approach. I'll test if it works with the SDK Updater.

I'm going to test in my desktop this weekend to check if it works with it.

I have the same problem, but with WIndows 7 32 bit. Drivers from discusion doesn't work. Don't you have some for 32 bit?
I found SDK Components on developer.android.com, where is Android driver which suppose to work, but unfortunately ODIN still do not see phone.

I also have the same problem but mine is worse because my phone is completely down after I tried to restore from a GB ndriod backup failure , phone won't boot , cannot boot into recovery only in download mode but no way my 4 x computers would detect the phone now ....tried using heimdall in linux as well as sdb, no go....so sad...help...
Sent from my Dell Streak using XDA

Using Google USB drivers finally worked for me. They can be optionally installed with Android SDK using SDK manager (extras). After installation drivers can be found in <sdk>\extras\google\usb_driver.
Just follow the instructions in the first post to find your device from device manager with exclamation mark. Need at least one reboot to work and I also redirected the driver installation process to Google usb driver directory but now ADB finally recognizes my SGS (MyICS, Android 4.0.3).
Edit: Operating system Vista 64-bit
[Currently stuck in "error: device not found" while trying adb push -command. I will update if I find a workaround. Probably something to do with inf-file.]
For alternate .inf -file (optional):
Google "usb-drivers-not-working-after-flash-latest-rom-ota" and see post #12 to see alternative inf-file. Some have managed to make adb recognize the device with that file, but I have at least this far been unsuccessful.
Edit: Problem above was caused by me being stupid and trying to use push in shell, which caused phone unable to locate host system folders. I don't know if that inf file has anything to do with drivers working now, but go ahead and try it if doesn't work with the original .inf

I got my i9000 recognized using the latest drives from the Google sdk

That‘s great

http://ics.samsung-updates.com/addons/usb_driver.zip

oxidising said:
I got my i9000 recognized using the latest drives from the Google sdk
Click to expand...
Click to collapse
I tried last night didn't work for me.... (r18)
Sent from my Dell Streak using XDA

oxidising said:
I got my i9000 recognized using the latest drives from the Google sdk
Click to expand...
Click to collapse
Daha açık anlatabilir misiniz?

IWillExplain said:
http://ics.samsung-updates.com/addons/usb_driver.zip
Click to expand...
Click to collapse
... this driver actually worked for me...!
(Tiramisu ICS)

USB option has been lost in my galaxy s
RazorNova said:
Using Google USB drivers finally worked for me. They can be optionally installed with Android SDK using SDK manager (extras). After installation drivers can be found in <sdk>\extras\google\usb_driver.
Just follow the instructions in the first post to find your device from device manager with exclamation mark. Need at least one reboot to work and I also redirected the driver installation process to Google usb driver directory but now ADB finally recognizes my SGS (MyICS, Android 4.0.3).
Edit: Operating system Vista 64-bit
[Currently stuck in "error: device not found" while trying adb push -command. I will update if I find a workaround. Probably something to do with inf-file.]
For alternate .inf -file (optional):
Google "usb-drivers-not-working-after-flash-latest-rom-ota" and see post #12 to see alternative inf-file. Some have managed to make adb recognize the device with that file, but I have at least this far been unsuccessful.
Edit: Problem above was caused by me being stupid and trying to use push in shell, which caused phone unable to locate host system folders. I don't know if that inf file has anything to do with drivers working now, but go ahead and try it if doesn't work with the original .inf
Click to expand...
Click to collapse
What should i do after instaling SDK

IWillExplain said:
http://ics.samsung-updates.com/addons/usb_driver.zip
Click to expand...
Click to collapse
This worked for me

The very important thing is that newest Google USB driver is in
Code:
[B]<android-sdk>/extras/google/usb_driver/[/B]
location, not in
Code:
<android-sdk>/usb_driver
It really makes the difference !

these drivers only worked once...
all the other times killing and starting over adb i was getting error messages like "device not found" and "protocol fault" even though adb devices was listing the device online.
apparently i connected the phone to another USB3 port on my pc (front panel) and that was it!! it now works every time i type adb shell or adb devices.i no longer get any error messages.rather weird
anyway..i also wanted to be up to date with everything so i uninstalled all related software like the older java 6 jdk, Android SDK and the drivers mentioned above.
i followed the procedure below and installed all the latest packages:
latest java 7u5 JDK, the latest Android SDK (nstaller_r20.0.1-windows.exe) then ran sdk-manager and loaded http://developer.android.com/tools/extras/oem-usb.html#InstallingDriver google USB drivers rev 6. then installed these drives so i got the ADB composite interface on my device manager and it all works fine now.

I recenelty installed latest ICS , and SDK recognizes my phone as ACER ADB , when I'm pretty sure its a Samsung I9000 . I tried uninstalling the ACER ADB and install the one that the guy posted in the first post , and it didn't work , it said this driver is not compatible , oddly it reinstalled ACER ADB though. I can't even uninstall it at all , I removed all my Samsung drivers , and everything else I installed for Samsung , and its still there , I even tried removing the GOOGLE USB drivers , still there.
Neendless to say that the phone doesnt connect to the PC at all even though it says everything is alright. For example i got ths gPAD app , which uses the USB with Debugging to turn the phone into a mouse , but it says its not connected even though it is.

[Q] Windows ADB USB drivers?

After enabling USB debugging on my Nexus 7, I still can't get "adb devices" to list my Nexus 7. I also tried switching its USB connection type from "media" to "camera", to no effect. I have Windows 7; I see a "Nexus" device under Other Devices in my device manager, but when I try to install the Google USB drivers from the Android SDK, Windows refuses to take it.
This is going to make development difficult Anyone know where I can find working USB drivers for Windows 7?

beandog said:
After enabling USB debugging on my Nexus 7, I still can't get "adb devices" to list my Nexus 7. I also tried switching its USB connection type from "media" to "camera", to no effect. I have Windows 7; I see a "Nexus" device under Other Devices in my device manager, but when I try to install the Google USB drivers from the Android SDK, Windows refuses to take it.
This is going to make development difficult Anyone know where I can find working USB drivers for Windows 7?
Click to expand...
Click to collapse
If you have updated the drivers from the SDK, then your problem is probably coming from the cable.
PS: Try not to use an extension cable

When I have had this problem in the past I have found that installing PDA net solves it.
Sent from my Galaxy Nexus using Tapatalk 2

download a sync software,for example,chinese use 360 mobile assistant,it will help you to connected with PC
Sent from my SHW-M190S using xda premium

i got the problem too,just install 360 mobile assistant ,it worked.but i dont know ,any mobile assistant
used in your city？
Sent from my SHW-M190S using xda premium

You may try to use device manager to solve the issue.:
Firstly please connect your Nexus 7 to you computer using the USB cable
included in the box.
Then on the tablet,
choose "Settings" -> "Storage" -> open the menu -> choose "USB computer connection" -> choose "MTP" or "PTP".
On your computer,
1. Control Panel -> Hardare and Sound -> View devices and printers
2. Click on Nexus.
3. Click on "Hardware" tab
4. Click on "Properties"
5. Click on "Change settings"
6. Click on "Driver" tab
7. Click on "Update drivers".
I'd suggest that you repeat these steps for both "MTP" and "PTP" connection types mentioned above.
Then on your computer, run "adb devices", the Nexus 7 would be listed in the
output of the adb command.
Enjoy.

Works with PTP mode - MTP mode doesn't
just for future reference...
By default it uses the MTP mode for USB. ADB is not working in this mode, even after i follow all the steps in above post.
Change it to use PTP (Camera mode), and ADB works !! go figure.

driving me crazy too.
First, windows did not recognize the thing in AdB mode. I managed to get around that with PDA net. But in cmd mode running "fastboot oem unlock" it just sits there saying "waiting for device". Also switched to both usb modes under "storage" as well as tried all usb ports on my pc (running Win 7 64bit). Using original cable.
Any other clues on what to do next?

bytecollektr said:
driving me crazy too.
First, windows did not recognize the thing in AdB mode. I managed to get around that with PDA net. But in cmd mode running "fastboot oem unlock" it just sits there saying "waiting for device". Also switched to both usb modes under "storage" as well as tried all usb ports on my pc (running Win 7 64bit). Using original cable.
Any other clues on what to do next?
Click to expand...
Click to collapse
ADB and fastboot may have two different drivers, this is the case with most other devices.
Anywho here's a link to the all inclusive driver bundle. Drivers was one of the reasons I only use a linux distro these days.

Unlawful said:
ADB and fastboot have two different drivers.
Anywho here's a link to the all inclusive driver bundle. Drivers was one of the reasons I only use a linux distro these days.
Click to expand...
Click to collapse
Still nothing. Deleted the drivers, and it obviously installed the new ones, since the name under the "device manager" changed. I go to the Android sdk and it still says waiting for device. Is there different versions of fastboot? Maybe its the wrong command? (fastboot oem unlock)

reddweb said:
just for future reference...
By default it uses the MTP mode for USB. ADB is not working in this mode, even after i follow all the steps in above post.
Change it to use PTP (Camera mode), and ADB works !! go figure.
Click to expand...
Click to collapse
This is how i got my ADB drivers to actuallly work right!! listen to this guy.

Nexcellent said:
This is how i got my ADB drivers to actuallly work right!! listen to this guy.
Click to expand...
Click to collapse
I have it in that mode, and it does not do anything, even with the new drivers.

bytecollektr said:
I have it in that mode, and it does not do anything, even with the new drivers.
Click to expand...
Click to collapse
Oh and fastboot is not available during normal operations and it has to be booted into the bootloader to use fastboot. Try using adb reboot bootloader and then when it restarts fastboot oem unlock.

I'm in the exact same situation
I'm having the same problem. I'm not exactly sure how to use the Naked Drivers pack. Can someone advise?

Easy as ADB...
Use the step by step instructions in the Nexus Root Toolkit found here;
http://forum.xda-developers.com/showthread.php?t=1766475
Hope that helps,
-CC

Set it to ptp mode, install updated sdk, and you will find proper adb driver in extras/google/usb-driver directory. After those steps adb started to work in my case' no need for third party downloads.
Sent from my Nexus 7 using xda app-developers app

I've been having the same issues with all of the new android devices I've tried to use adb on my computer for. I as able to make them work by manually installing the drivers in device manager. When you choose browse for drivers manually you can look through pre installed drivers and select adb interface and manually choose the drivers for adb and fast boot. Only issue I have is that it won't give adb root access and says rot is not available in production builds. Not sue if that's related or not.
Sent from my Nexus 7 using xda app-developers app

Windows 7 - Nexus 7 ADB Recognition
For me, like others, choosing either MTP or PTP from the Nexus 7's USB computer connection options didn't solve the issue. Updated to the latest version of the Android SDK Tools within Eclipse [version 20.0.1], and even uninstalled and re-installed the Google USB Driver [Revision 6] within the Android SDK manager, but no luck.
What ended up clearing the issue for me was to go to Computer Management, find the Nexus device with the question mark next to it, update the driver by browsing a location on the computer, browse to the location on your computer where you saved the Android SDK [the one with the following directories: add-ons, docs, extras, platforms, platform-tools, etc], and choose that very folder containing those folders I mentioned. It should search for a while then ask you whether or not to install some Asus/Google driver.
After installing that driver, my N7 was recognized by the "adb devices" command.
NOTE: Turns out when I updated the driver, my N7 was in PTP mode, and when I switched it to MTP mode, it was no longer recognized under adb devices. adb kill-server then adb start-server should get it recognized again when you switch between MTP and PTP.
Hope this works for all of you out there, like me, who really didn't want to take the 3rd party software route to overcome this problem.
Cheers.

ADB driver
Try to root toolkit from Wugfresh
http://forum.xda-developers.com/showthread.php?t=1766475
There is a very complete and usable guide to install ADB driver for most version of windows (XP->win 7).
You don't have to unlock or root; just use the interactive guide for driver install.
Good luck
bytecollektr said:
Still nothing. Deleted the drivers, and it obviously installed the new ones, since the name under the "device manager" changed. I go to the Android sdk and it still says waiting for device. Is there different versions of fastboot? Maybe its the wrong command? (fastboot oem unlock)
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rootblock said:
For me, like others, choosing either MTP or PTP from the Nexus 7's USB computer connection options didn't solve the issue. Updated to the latest version of the Android SDK Tools within Eclipse [version 20.0.1], and even uninstalled and re-installed the Google USB Driver [Revision 6] within the Android SDK manager, but no luck.
What ended up clearing the issue for me was to go to Computer Management, find the Nexus device with the question mark next to it, update the driver by browsing a location on the computer, browse to the location on your computer where you saved the Android SDK [the one with the following directories: add-ons, docs, extras, platforms, platform-tools, etc], and choose that very folder containing those folders I mentioned. It should search for a while then ask you whether or not to install some Asus/Google driver.
After installing that driver, my N7 was recognized by the "adb devices" command.
NOTE: Turns out when I updated the driver, my N7 was in PTP mode, and when I switched it to MTP mode, it was no longer recognized under adb devices. adb kill-server then adb start-server should get it recognized again when you switch between MTP and PTP.
Hope this works for all of you out there, like me, who really didn't want to take the 3rd party software route to overcome this problem.
Cheers.
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i'm having the issue with the mtp not being recognized in adb. can you be more specific in the adb kill-server and adb start-server.