Database Users

[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.

[how to] lock/unlock your bootloader without htcdev(s-off required)

READ THIIS!
*this thread is for m8. it will NOT work on m7,or any older device. please check the general forum for your particular device for a similar thread.
this thread will let you unlock your bootloader without htcdev,or let you change your hboot watermark from relocked or locked back to stock.
advantages
-no hassle with htcdev,tokens,or unlock codes
-no submitting your phones personal info to htc
-the ability to get back to 100% stock without any visual traces or records of having been s off or unlocking your bootloader.
you do NOT need to downgrade your hboot. this simple adb command works without any scary hboot downgrades.
*you must be s off.
*you must have superuser installed
read this:
this will not work if your s on. its not a way to magically unlock
the usual disclaimers:
use this info at your own risk. if it melts your phone into a little pile of aluminum goo,its not my fault.
credits
-beaups for schooling me on echo comand protocol
-strace for originally discovering the location of the lock status flag(check out this thread for more info)
-kdj67f for fearlessly testing on vzw m7_wlv and putting up some screenshots in post 2. thanks!
-matthew0776 for fearlessly testing for sprint m7_wls
*i dont have m8. let me know if it works and ill add you to the credits.
IF you are an advanced user with adb/fastboot set up and some basic knowlede of the cmd window,you can skip to #2
1)set up adb(windows 7 and older)
-download this file
-install drivers: if you have htc sync installed,you should allready have drivers. if not,you can install htc sync,or install these modified htc drivers from revolutionary (driver mirror)
-unzip your miniadb_v1031.zip file. this is native funtionality in windows 7. you otherwise may need a utility such as "7-zip" to extract,or unzip it. place the unzipped folder onto the root of your C drive on your PC. root means the top level,not inside any folders. so just copy and paste,or drag and drop the folder onto C with everything else that is there. you may want to rename it to "miniadb_m7" since youll be putting some device specific files in here.
-open a command window. on windows 7,click the start bubble in the lower left and type "command" in the search box. xp i believe is similar or the same. doing this should open a small black command window.
-change to your miniadb_m7 directory. type the following at the prompt in your cmd window:
cd c:\miniadb_m7
your command promt should change to "c:miniadb_m7>" provided you: 1)unzipped the miniadb_v1031 zip file,and 2)put the folder on your c drive,and 3)entered the name of the folder correctly ("miniadb_m7" in this case)
-now make sure usb debugging is checked in developer options(you will need to turn it on first),and plug your phone into your PC with a usb cable
-make sure your phone is being recognized- type:
adb devices
if your drivers are installed correctly,this should return your phones serial number. you should hear the "found device" noises when you plug your phone in. if it starts installing drivers,wait for it to finish before typing the adb devices command.
if you get your serial number back,then enter this command:
adb reboot bootloader
this should take your phone to the "fastboot" screen,wich is white with colored letters. this is one mode of your bootloaders interactive modes. at the top youll see fastboot devices as confirmation youre in fastboot.
now enter:
fastboot devices
again,this should return your phones serial number. you should hear the "found device" noises when you plug your phone in. if it starts installing drivers,wait for it to finish before typing the adb devices command.
if you get your serial number back,you can enter the following to boot back to the phones OS:
fastboot reboot
and now,youve installed adb/fastboot and tested youre phones drivers. if at either spot,you have trouble and dont get your serial number back,there is some sort of connection issue. use these steps to troubleshoot:
troubleshooting connectivity issues:
-try a reboot of the PC
-try different usb cables and ports
-dont use a usb hub
-dont use usb 3.0
-make sure nothing capable of comunicating with the phone is enabled and running. htc sync,pdanet,easy tether,and even itunes have all been known to cause issues.
-windows 8 has been known to have issues. try a windows 7 or older machine
failing the above,
-i use these drivers for fastboot and adb(donwload and run as admin): http://downloads.unrevoked.com/HTCDriver3.0.0.007.exe (mirror)
failing that,try manually updating the drivers in the following manner:
-put the phone in fastboot mode(select fastboot from the hboot menu)
-open device manager on the PC
-plug in phone,watch for it to pop up in device manager.
-update drivers with device manager,pointing the wizard to the extracted
driver download folder from above
note that you can check the connectivity of the phone,and make sure drivers are working by in the following manner:
-open cmd window. change to directory containing adb/fastboot utilities
-adb with the phone in the booted OS,usb debug enabled,enter:
adb devices in a cmd window
-fastboot with phone in fastboot,enter:
fastboot devices in cmd window
in either case,a properly connected phone with working drivers installed should report back the phones serial number.
Click to expand...
Click to collapse
this process,in your cmd window,should look something like this:
Code:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\Scott>[COLOR="red"]cd c:\miniadb_m7[/COLOR]
c:\miniadb_m7>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
FAxxxxxxxxxx device
c:\miniadb_m7>[COLOR="red"]adb reboot bootloader[/COLOR]
c:\miniadb_m7>[COLOR="red"]fastboot devices[/COLOR]
FAxxxxxxxxxx fastboot
c:\miniadb_m7>[COLOR="red"]fastboot reboot[/COLOR]
rebooting...
finished. total time: 0.037s
c:\miniadb_m7>
2)reset your "lock status flag"
to LOCK your bootloader,enter the following:
adb devices
adb shell
su (if needed to get a # prompt)
echo -ne '\x00\x00\x00\x00' | dd of=/dev/block/mmcblk0p2 bs=1 seek=33796
(i would very strongly recomend you copy/paste this)
exit
(exit a second time if you need to to get back to a normal > prompt)
adb reboot bootloader
verify you are now locked
_____________________________________________________________________________________________
to UNLOCK your bootloader,enter the following:
adb devices
adb shell
su (if needed to get a # prompt)
echo -ne "HTCU" | dd of=/dev/block/mmcblk0p2 bs=1 seek=33796
(i would very strongly recomend you copy/paste this)
exit
(exit a second time if you need to to get back to a normal > prompt)
adb reboot bootloader
verify you are now unlocked
*i have tested this on my gsm htc one. if someone wants to test on vzw,ill add you to the credits
(yes this is m7. i dont have an m8 yet)
other useful threads:
remove tampered banner: http://forum.xda-developers.com/showthread.php?t=2708565
change mid without an eng bootloader: http://forum.xda-developers.com/showthread.php?t=2708581

mine!

@scotty1223 will this royally mess anything up if I try this on my Sprint M8?

BD619 said:
@scotty1223 will this royally mess anything up if I try this on my Sprint M8?
Click to expand...
Click to collapse
Possibly. If the flag is in a different spot,and you overwrite something important. You can dump p2 and p6 and I can take a look,if you'd like.
Sent from my HTC PG09410 using Tapatalk 2

scotty1223 said:
Possibly. If the flag is in a different spot,and you overwrite something important. You can dump p2 and p6 and I can take a look,if you'd like.
Sent from my HTC PG09410 using Tapatalk 2
Click to expand...
Click to collapse
Hopefully this will give you the answer?
http://forum.xda-developers.com/showthread.php?t=2699165
or
http://forum.xda-developers.com/showthread.php?t=2696652

Thanks for working on this Scotty!
Also, thanks for getting the Sprint info to Scotty BD.
Both of yinz, thanks and thanked.
Sent from my EVO using Tapatalk

BD619 said:
Hopefully this will give you the answer?
http://forum.xda-developers.com/showthread.php?t=2699165
or
http://forum.xda-developers.com/showthread.php?t=2696652
Click to expand...
Click to collapse
unfortunately,no. it does show that the partition the flag is located in is in the same spot(pg1fs is p2) but i need to see that partition if you want me to verify the flag is in the same spot(it prolly is,but is not always across variants)
in a root shell(# prompt):
dd if=/dev/block/mmcblk0p2 of=/sdcard/mmcblk0p2
then upload the image and pm me a link.

scotty1223 said:
unfortunately,no. it does show that the partition the flag is located in is in the same spot(pg1fs is p2) but i need to see that partition if you want me to verify the flag is in the same spot(it prolly is,but is not always across variants)
in a root shell(# prompt):
dd if=/dev/block/mmcblk0p2 of=/sdcard/mmcblk0p2
then upload the image and pm me a link.
Click to expand...
Click to collapse
Check PM

BD619 said:
Check PM
Click to expand...
Click to collapse
Cool thanks. Will take a look when I get home this evening
Sent from my HTC6435LVW using Tapatalk

BD619 said:
@scotty1223 will this royally mess anything up if I try this on my Sprint M8?
Click to expand...
Click to collapse
scotty1223 said:
Possibly. If the flag is in a different spot,and you overwrite something important. You can dump p2 and p6 and I can take a look,if you'd like.
Sent from my HTC PG09410 using Tapatalk 2
Click to expand...
Click to collapse
i can confirm that this unlock method works on the sprint variant

ak074 said:
i can confirm that this unlock method works on the sprint variant
Click to expand...
Click to collapse
Awesome, thanks
Sent from my HTC6435LVW using Tapatalk

Can anyone confirm on ATT M8 converted to GPE?
Sent from my HTC One_M8 using Tapatalk

How the hell do you get into the bootloader ...just received my m8 today on crappy voda ....not spending money on phones anymore I must of spent at least 3grand over the years, anyway ....I press down vol and power but doesn't do anything ....it will reboot with up vol and power ..that's all I can do. Do I need to turn of quickboot and enable debugging before I can load the bootloader ?....oh yes ...do we have s-off for international model ? ...because its staying in the box if I cant s-off and get supercid.

boe323 said:
How the hell do you get into the bootloader ...just received my m8 today on crappy voda ....not spending money on phones anymore I must of spent at least 3grand over the years, anyway ....I press down vol and power but doesn't do anything ....it will reboot with up vol and power ..that's all I can do. Do I need to turn of quickboot and enable debugging before I can load the bootloader ?....oh yes ...do we have s-off for international model ? ...because its staying in the box if I cant s-off and get supercid.
Click to expand...
Click to collapse
Try without quick boot,because as long as that is turned on the phone dosent really turn off but goes into some cind of standby mode like windows OS .
Sent from my HTC One X using XDA Premium 4 mobile app

Power and vol up till rhe phone turns off to reboot. When the screen turns off,move from vol up to vol down.
Or turn off fastboot and power off for a few seconds. Then power vol down
Sent from my HTC PG09410 using Tapatalk 2

A couple questions:
1). Does this actually change you back to locked the way <fastboot oem lock> would? or is it just changing the header text?
2). I see references to the Sprint M8 and this is in the M8 forum, but would if foul anyting up to try it on a Verizon M8 with the 3.16 HBoot?
Thanks for the clarification.

Please excuse the ignorance. How can you get s-off without rooting first?

anit77 said:
Please excuse the ignorance. How can you get s-off without rooting first?
Click to expand...
Click to collapse
You can't. Where does it say you can?

anit77 said:
Please excuse the ignorance. How can you get s-off without rooting first?
Click to expand...
Click to collapse
You cannot. There are temp root that work on some models otherwise you'll need HTCdev
Sent from my HTC One VX using Tapatalk

wgergely said:
A couple questions:
1). Does this actually change you back to locked the way <fastboot oem lock> would? or is it just changing the header text?
2). I see references to the Sprint M8 and this is in the M8 forum, but would if foul anyting up to try it on a Verizon M8 with the 3.16 HBoot?
Thanks for the clarification.
Click to expand...
Click to collapse
1) actual lock
2) it will work on vzw m8
Sent from my HTC One VX using Tapatalk

[Q] Working with ADB & Fastboot

Has anyone gotten this to work? When I type ADB devices, I get:
Code:
????????? no permissions
I rebooted into fastboot with no luck either. Except now ADB doesn't even pick up any devices. And yes, I enabled USB debug mode and unauthorized sources.
Thanks!

feered said:
Has anyone gotten this to work? When I type ADB devices, I get:
Code:
????????? no permissions
I rebooted into fastboot with no luck either. Except now ADB doesn't even pick up any devices. And yes, I enabled USB debug mode and unauthorized sources.
Thanks!
Click to expand...
Click to collapse
I'd guess you are using an older version of the toolkit. Try downloading the latest SDK and using it to see if that helps (it'll also update to the latest drivers). Good luck.

feered said:
Has anyone gotten this to work? When I type ADB devices, I get:
Code:
????????? no permissions
I rebooted into fastboot with no luck either. Except now ADB doesn't even pick up any devices. And yes, I enabled USB debug mode and unauthorized sources.
Thanks!
Click to expand...
Click to collapse
Which OS are you using (Windows, Mac, Linux)?

Elrondolio said:
I'd guess you are using an older version of the toolkit. Try downloading the latest SDK and using it to see if that helps (it'll also update to the latest drivers). Good luck.
Click to expand...
Click to collapse
It's the latest SDK.
bsara said:
Which OS are you using (Windows, Mac, Linux)?
Click to expand...
Click to collapse
Linux - Ubuntu to be more specific.
So I figured out the issue. I rebooted into the bootloader (unplug NP, plug it back in, immediately hold the button located on the bottom of the player until the light flashes), typed fastboot devices and it finally recognized the device. ADB still however did not recognize the device while in the bootloader until I powered it back on. Very strange... Not sure if the order I did things made a difference but I'm able to connect to the interface now.
Hope this helps someone. Cheers!

feered said:
Linux - Ubuntu to be more specific.
So I figured out the issue. I rebooted into the bootloader (unplug NP, plug it back in, immediately hold the button located on the bottom of the player until the light flashes), typed fastboot devices and it finally recognized the device. ADB still however did not recognize the device while in the bootloader until I powered it back on. Very strange... Not sure if the order I did things made a difference but I'm able to connect to the interface now.
Click to expand...
Click to collapse
I had the same issue on Ubuntu. You need to run ADB with sudo...why? I have no idea...but I found a post suggesting it on StackOverflow and it worked...so I'm not questioning it.
Before doing anything below, have you installed adb via apt-get? If so, remove it and just put a link to your SDK manager adb and fastboot in a folder included in your PATH or add the directory to the path, then start a new shell before proceeding. The adb and fastboot provided by apt-get are old.
Do the following:
Have your device plugged in and fully booted and with USB debugging enabled
run this command: "sudo adb kill-server && adb start-server"
You should be prompted on the device to authorize the access of your computer via adb
run "adb devices" to make sure that it all worked correctly

Nexus 6P not recognized via adb devices on Mac

Hi everyone,
I have a Nexus 6P which simply refuses to connect via USB on my Mac (i.e. it doesn't show up as a valid device under adb devices or via Android File Transfer). I believe it was working at some point but it seems to have stopped now. Might be worth noting, I did try connecting it to my car's charger a few months ago but had the worst time with it, it would charge and disconnect every few seconds (may or may not be relevant in this case as it pertains to the USB). I tried a different charger and it works fine with it though.
I have tried a lot of different things (which I'll list below) but have had no luck getting my Nexus 6P being recognized as a device when I connect it to my Mac (or any other). I do have the Developer settings enabled and I am able to switch to MTP but I never get the prompt to change USB mode. Anytime I connect my device, adb devices doesn't list it at all. I tried ADB File transfer as well and that also says "Please connect your device".
Here are some of the things I have tried so far:
1. Used different cables - no luck
2. Used a different mac - no luck
3. Tried a different Nexus 6P with my cable, it works fine (so it is not a cable issue)
4. Tried a different Nexus 6P with my mac, it works fine (so my Mac seems to be OK too)
5. Restarted in recovery mode - no luck
6. Tried removing a bunch of apps in case there was something conflicting - no luck so far
7. Chatted up Google support - They couldn't tell me much outside of the last option - Factory Reset - I have been holding off on that since I want to be able to transfer my files out first but I really want to avoid having to try that before exhausting all other options. They did offer to replace with a refurb'ed device but I had to decline that.
I did create a bug report dump using the device to see if anything interesting showed up and the only thing noticeable there is an exception related to USB. I am putting that info here in case it is useful in helping with this.
Code:
DUMP OF SERVICE usb:
USB Manager State:
USB Device State:
mCurrentFunctions: mtp,adb
mCurrentFunctionsApplied: true
mConnected: false
mConfigured: false
mUsbDataUnlocked: false
mCurrentAccessory: null
Kernel state: DISCONNECTED
Kernel function list: mtp,ffs
USB Debugging State:
Connected to adbd: true
Last key received: null
User keys:
IOException: java.io.FileNotFoundException: /data/misc/adb/adb_keys: open failed: ENOENT (No such file or directory)
System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
USB Host State:
USB Port State:
otg_default: port=UsbPort{id=otg_default, supportedModes=dual}, status=UsbPortStatus{connected=true, currentMode=ufp, currentPowerRole=sink, currentDataRole=device, supportedRoleCombinations=[source:host, sink:device]}, canChangeMode=true, canChangePowerRole=false, canChangeDataRole=false
USB Audio Devices:
USB MIDI Devices:
Settings for user 0:
Device permissions:
Accessory permissions:
Device preferences:
Accessory preferences:
Any help here is really appreciated! Thanks

desimunda42 said:
Code:
USB Debugging State:
Connected to adbd: true
Last key received: null
User keys:
IOException: java.io.FileNotFoundException: /data/misc/adb/adb_keys: open failed: ENOENT (No such file or directory)
System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
Click to expand...
Click to collapse
That seems suspicious. Was this taken while the phone was connected to your mac?
Here's my phone's dump while NOT connected to a computer
Code:
USB Manager State:
USB Device State:
mCurrentFunctions: mtp,adb
mCurrentFunctionsApplied: true
mConnected: false
mConfigured: false
mUsbDataUnlocked: false
mCurrentAccessory: null
Kernel state: DISCONNECTED
Kernel function list: mtp,ffs
USB Debugging State:
Connected to adbd: true
[COLOR="red"] Last key received: blahblahblahblah (not null)
User keys: blahblahblahblah (no exception)
[/COLOR] System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
Here it is when connected to computer
Code:
DUMP OF SERVICE usb:
USB Manager State:
USB Device State:
mCurrentFunctions: mtp,adb
mCurrentFunctionsApplied: true
[COLOR="red"] mConnected: true
mConfigured: true
[/COLOR] mUsbDataUnlocked: false
mCurrentAccessory: null
[COLOR="red"] Kernel state: CONFIGURED
[/COLOR] Kernel function list: mtp,ffs
USB Debugging State:
Connected to adbd: true
[COLOR="Red"] Last key received: blahblahblahblah (not null)
User keys: blahblahblahblah (no exception)
[/COLOR] System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
Are you on a custom rom? Do you get an authorization prompt if you call "adb device" after doing "Revoke USB debugging authorizations" from Develop options?

adotkdotjh said:
That seems suspicious. Was this taken while the phone was connected to your mac?
Are you on a custom rom? Do you get an authorization prompt if you call "adb device" after doing "Revoke USB debugging authorizations" from Develop options?
Click to expand...
Click to collapse
I wasn't connected to my Mac at the time I pulled the report (I confirmed by repeating it just now and still get that 'FileNotFoundException" in the logs for USB device. I don't have a custom rom, I have the standard OEM from the Google Store and didn't do anything else with it.
Also, I did revoke the USB debugging auth multiple times and inspite of that I never get any prompt when I connect.
I also got the report while connected to the Mac and am still seeing the same exception:
Code:
DUMP OF SERVICE usb:
USB Manager State:
USB Device State:
mCurrentFunctions: mtp,adb
mCurrentFunctionsApplied: true
mConnected: false
mConfigured: false
mUsbDataUnlocked: false
mCurrentAccessory: null
Kernel state: DISCONNECTED
Kernel function list: mtp,ffs
USB Debugging State:
Connected to adbd: true
Last key received: null
User keys:
IOException: java.io.FileNotFoundException: /data/misc/adb/adb_keys: open failed: ENOENT (No such file or directory)
System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
USB Host State:
USB Port State:
otg_default: port=UsbPort{id=otg_default, supportedModes=dual}, status=UsbPortStatus{connected=true, currentMode=ufp, currentPowerRole=sink, currentDataRole=device, supportedRoleCombinations=[source:host, sink:device]}, canChangeMode=true, canChangePowerRole=false, canChangeDataRole=false
USB Audio Devices:
USB MIDI Devices:
Settings for user 0:
Device permissions:
Accessory permissions:
Device preferences:
Accessory preferences:

desimunda42 said:
Hi everyone,
I have a Nexus 6P which simply refuses to connect via USB on my Mac (i.e. it doesn't show up as a valid device under adb devices or via Android File Transfer). I believe it was working at some point but it seems to have stopped now. Might be worth noting, I did try connecting it to my car's charger a few months ago but had the worst time with it, it would charge and disconnect every few seconds (may or may not be relevant in this case as it pertains to the USB). I tried a different charger and it works fine with it though.
I have tried a lot of different things (which I'll list below) but have had no luck getting my Nexus 6P being recognized as a device when I connect it to my Mac (or any other). I do have the Developer settings enabled and I am able to switch to MTP but I never get the prompt to change USB mode. Anytime I connect my device, adb devices doesn't list it at all. I tried ADB File transfer as well and that also says "Please connect your device".
Here are some of the things I have tried so far:
1. Used different cables - no luck
2. Used a different mac - no luck
3. Tried a different Nexus 6P with my cable, it works fine (so it is not a cable issue)
4. Tried a different Nexus 6P with my mac, it works fine (so my Mac seems to be OK too)
5. Restarted in recovery mode - no luck
6. Tried removing a bunch of apps in case there was something conflicting - no luck so far
7. Chatted up Google support - They couldn't tell me much outside of the last option - Factory Reset - I have been holding off on that since I want to be able to transfer my files out first but I really want to avoid having to try that before exhausting all other options. They did offer to replace with a refurb'ed device but I had to decline that.
I did create a bug report dump using the device to see if anything interesting showed up and the only thing noticeable there is an exception related to USB. I am putting that info here in case it is useful in helping with this.
Code:
DUMP OF SERVICE usb:
USB Manager State:
USB Device State:
mCurrentFunctions: mtp,adb
mCurrentFunctionsApplied: true
mConnected: false
mConfigured: false
mUsbDataUnlocked: false
mCurrentAccessory: null
Kernel state: DISCONNECTED
Kernel function list: mtp,ffs
USB Debugging State:
Connected to adbd: true
Last key received: null
User keys:
IOException: java.io.FileNotFoundException: /data/misc/adb/adb_keys: open failed: ENOENT (No such file or directory)
System keys:
IOException: java.io.FileNotFoundException: /adb_keys: open failed: ENOENT (No such file or directory)
USB Host State:
USB Port State:
otg_default: port=UsbPort{id=otg_default, supportedModes=dual}, status=UsbPortStatus{connected=true, currentMode=ufp, currentPowerRole=sink, currentDataRole=device, supportedRoleCombinations=[source:host, sink:device]}, canChangeMode=true, canChangePowerRole=false, canChangeDataRole=false
USB Audio Devices:
USB MIDI Devices:
Settings for user 0:
Device permissions:
Accessory permissions:
Device preferences:
Accessory preferences:
Any help here is really appreciated! Thanks
Click to expand...
Click to collapse
I usually only get the key prompt for ADB authorzation when I connect my device and type "adb devices"..... If worse comes to worse, You can restore your phone to factory settings without wiping your sd card. Then you could test that option with compromising your data. Just flash each image from the archive yourself when restoring the firmware as opposed to using the flash-all scipt, or resetting the phone from settings... DO NOT flash the "userdata.img" included in the factory firmware archive or issue the command "fastboot format userdata" during the restore process and all of your files will be fine. This may be an option as long as fastboot is still functional on your device. Ive come across so many different devices in so many different conditions over the years, as long as the device could power on and the usb port was functional, fasboot has worked time and time again.
PS adb on Mac can be a bit tricky especially if this is the first time youre attempting to o install and use it. Unless you set the correct enviornment variables during the install process, you will oly be able to access adb from inside the folder that its stored in on your mac. Youll have to pull up your terminal and and direct it to the folder containing adb and fastboot. Its usually ina a folder called "platform-tools" Which can be found in the dictory in whch you installed the Android SDK or SDK Tools packages... Now that I think about it, you have to download adb from the SDK package I just mentioned. After doing so, youll find the platform tools folder and it should contain what you need. As long as java is correctly installed on your mac then everything should work once you issue the "adb devices" command in a terminal session thats points at the "platform-tools" folder. YOU ALSO HAVE TO HAVE JDK INSTALLED in order for it to work with your device. I just looked at what you posted and it looks like youred missing JDK"...
If you havent done any of this yet the thats the problem. If everything I just typed seems confusing then you can try this which explains everything you need to do to set up adb a whole lot better than my attempt above lol buts its going to take some time to accomplish https://seo-michael.co.uk/how-to-setup-adb-on-os-x/
or
You can also install and configure adb a whole lot easier by issuing the following commands from within your mac terminal.... (This will install Brew on your Mac, if you arent familiar with what it is, Its a software distrobution platform. Sort of like git hub and linux software repos. When in doubt, do a little reading first. It'll solve all your problems....
-Install Brew - Copy and paste this command into a mac terminal and follow the prompts that show up.
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-Once that finishes, next use this command
brew update && brew cask install java
-Once that is complete enter this last command
brew install android-platform-tools
Those 3 commands will do 99 percent of the work. When its done just find the platform tools folder and go from there. Hope this helps.

Sass86oh said:
PS adb on Mac can be a bit tricky especially if this is the first time youre attempting to o install and use it. Unless you set the correct enviornment variables during the install process, you will oly be able to access adb from inside the folder that its stored in on your mac. Youll have to pull up your terminal and and direct it to the folder containing adb and fastboot. Its usually ina a folder called "platform-tools" Which can be found in the dictory in whch you installed the Android SDK or SDK Tools packages... Now that I think about it, you have to download adb from the SDK package I just mentioned. After doing so, youll find the platform tools folder and it should contain what you need. As long as java is correctly installed on your mac then everything should work once you issue the "adb devices" command in a terminal session thats points at the "platform-tools" folder. YOU ALSO HAVE TO HAVE JDK INSTALLED in order for it to work with your device. I just looked at what you posted and it looks like youred missing JDK"...
Click to expand...
Click to collapse
He says he already tried adb devices which didn't list anything. That tells me adb is configured correctly. Otherwise it should've given errors. Plus, he also said another Nexus 6P worked on the same mac.

adotkdotjh said:
He says he already tried adb devices which didn't list anything. That tells me adb is configured correctly. Otherwise it should've given errors. Plus, he also said another Nexus 6P worked on the same mac.
Click to expand...
Click to collapse
Yep
Sass86oh said:
I usually only get the key prompt for ADB authorzation when I connect my device and type "adb devices"..... If worse comes to worse, You can restore your phone to factory settings without wiping your sd card. Then you could test that option with compromising your data. Just flash each image from the archive yourself when restoring the firmware as opposed to using the flash-all scipt, or resetting the phone from settings... DO NOT flash the "userdata.img" included in the factory firmware archive or issue the command "fastboot format userdata" during the restore process and all of your files will be fine. This may be an option as long as fastboot is still functional on your device. Ive come across so many different devices in so many different conditions over the years, as long as the device could power on and the usb port was functional, fasboot has worked time and time again.
PS adb on Mac can be a bit tricky especially if this is the first time youre attempting to o install and use it. Unless you set the correct enviornment variables during the install process, you will oly be able to access adb from inside the folder that its stored in on your mac.
Click to expand...
Click to collapse
Thanks for the detailed steps but like adotkdotjh mentioned, I already have a working adb (and it worked fine with a different Nexus 6P on the same mac). How would 'fastboot' work if the computer does not even see my device under list of devices? I've never done any image flashing before so that would be quite an unfamiliar territory but I'd be willing to explore. Where would I get these image files and how do I issue the command to the device while it is not being recognized? Thanks

desimunda42 said:
Yep
Thanks for the detailed steps but like adotkdotjh mentioned, I already have a working adb (and it worked fine with a different Nexus 6P on the same mac). How would 'fastboot' work if the computer does not even see my device under list of devices? I've never done any image flashing before so that would be quite an unfamiliar territory but I'd be willing to explore. Where would I get these image files and how do I issue the command to the device while it is not being recognized? Thanks
Click to expand...
Click to collapse
Fastboot (also refered to as "download mode") is a tool used to essentially reprogram your device in the event that you are unable to enter into recovery mode in oreder to fix whatever issue your device is having. Android devices have 3 working modes, normal function, recovery mode, and fastboot. Number one is obvious, recovery allows you to completely reset your device without using a computer if every other measure youve tried hasn't worked. When you use this feature everything on your device is erased and your phone is completely restored to factory settings. Its convienet becuase not everyone is computer savvy and its to the point. But say you were updating (system update) your phone and accidently dropped it causing the battery to fall out and the device to shut off in the middle of the update process. What will most likely happen is the system partition will become corrupt, causing the phone to stick at the initial boot screen. Usually if that happens you can still access recovery mode and just reset but if for some reason that didnt work you would go to the manufacturers website and download the latest firmware for your device. You put the phone into fastboot mode by holding volume down and then pressing and holding the power button at the same time (while the phone is off).The process varies bydevice, If done correctly you will see on your screen a bunch of info along with Andy (the Android) chillin with his hatch open. You connect your phone to your computer and as long as your computer is set up correctly with adb and fastboot, you now have the abailty to reprogram (flash) your device using a series of commands that are issued from either the command line (windows) or terminal (linux/mac).
YOUR BOOTLOADER NEEDS TO BE UNLOCKED BEFORE CONTINUING. IF YOU DONT SEE A LITTLE LOCK AT THE BOTTOM OF YOUR DEVICE UNDER THE GOOGLE LOGO WHEN YOU FIRST TURN IT ON THEN YOU NEED TO GO TO SETTINGS, ABOUT DEVICE, FIND BUILD NUMBER AND TAP IT RAPIDLY UNTIL YOU SEE A MESSAGE POP UP SAYING YOU UNLOCKED DEVELOPER OPTIONS. GO BACK TO THE SETTINGS MENU AND SELEC DEVELOPER OPTIONS WHICH SHOULD NOW BE THERE AND INSIDE THERES AN OPTION CALLED "ALLOW OEM UNLOCKING" TURN IT ON. AND CONTINUE
Eextract the firmware archive you downloaded which will produce a folder containing 2 ".img files" files, another ".tar" archive, and some script files that you can use to make the process pretty much automated.
There are two of them, one for Windows (flash-all.bat) and one for Linux and Mac (flash-all.sh)....
Open the folder that was extracted from the firmware archive... Hold shift then right click a blank area in the folder. Select "open command prompt here" (Windows)
or
Type in terminal : cd ~/downloads/xxx where "xxx" is the name of the folder that was extracted but make sure that folder is moved to your "downloads" directory first
Then type the following commands:
IF YOU HAVENT UNLOCkED YOUR BOOTLOADER BEFORE THEN THIS IS WHERE YOU WILL NEED TO:
For Mac/Linux type: ./fastboot flashing unlock **Make sure you use the ./ or the command wont be recognized**
For Windows type: fastboot flashing unlock
Select yes on the phone when it asks if youre sure..... BAM, unlocked bootloader.
Your phone is completely free of restrections if you want to install custom firmware now. If not you can relock it after flashing the stock firmare by enterning fastboot mode again and typing
fastboot flashing lock or ./fastboot flashing lock (mac/linux).....
Now we can proceed with flashing the device...
For Windows: flash-all.bat and hit enter. The computer will do the rest.
Linux/Mac: ./flash-all.sh Make sure you use the ./ or the command wont be recognized.
If youre feeling brave you can do the entire process yourself by extracting the files in that second archive that was produced and flash each of them individually using a series of command in a specific order.
The 2nd extracted archive will give you a folder with five .img files
boot.img
cache.img
system.img
recovery.img
userdata.img ***** DO NOT FLASH THIS IMAGE. FORGET ITS EVEN THERE****
Take all five and move them to the original folder that was extracted. There are 2 other .img files that were extracted from the first archive also like I mentioned above, one that says "BOOTLOADER.xxx.xx.img" and one that says "RADIO.xxx.xxx.img"... Rename RADIO.xxx.xxx.img to | radio.img |and the other to| bootloader.img |ALL LOWER CASE keep them in that folder along with the other five. Now you should have 7 total image files in one folder. (Its smart to use the folder that your command prompt or terminal was opened in, if you decide to use a different folder then you have to direct each fastboot command to the folder where the .img file is located.
from the command line you flash each img individually with the following commands.....
(Mac/Linux need to include ./ before every fastboot command begins like this: ./fastboot or it wont work.
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader (phone will reboot then go back into fastboot mode, dont worry should only take seconds)
fastboot flash radio radio.img
fastboot reboot-bootloader (reboots again)
fastboot flash boot boot.img
fastboot erase cache
fastboot flash cache cache.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot flash vendor vendor.img
fastboot format userdata (this command takes place of the "userdata.img" file I told you to forget about)
fastboot reboot
As long as you see action on the screen and a "complete" after every command then youre in business. If you get an error check your spelling. THE COMMAND LINE IS CASE SENSETIVE. You might type the correct words but if one letter is capital the command wont work. If theres an extra space between words then the command wont work so check everything. Safe rule: Everything should be in lower case letters with 1 space after every word.... THIS S*** MATTERS
Its not as hard as it seems if you arent familiar with the process, but its also not something to mess with unless youve done your homework. Read up on it, there are so many good posts and people in here so you'll be able to find everything you need without any issue.
Fastboot can also be used to install a custom recovery like TWRP which would then allow you to install custom firmware (roms) on your device as long as theres support for it. Nexus devices are built for that very reason! They tend to have a huge selection of development within the Android community. They come with Android as Google intended it to be! No extra BS.... And its wicked easy to unlock the bootloader. That is why they are, in my opinion, the best Android devices available. But someone who doesnt really care much for things like modding and installing custom firmware might see the Nexus as plain device which lacks the bells and whistles included in other devices. Which is ok! I personally love the simplicity of pure Android and the whole philosophy behind the Nexus Program. To each is own! If you need anything else send me a message!

Have not read it all on here lol install this on your Mac https://www.android.com/filetransfer/ and see if it sees you 6p make sure you plug in them change from charging to file transfer on the phone then exit out of the app and reboot that will tell you if your Mac sees your phone

Nexus 7 2012 bricked, adb/fastboot connection ok but unauthorized. Can You help?

Hi.
I have a nexus 7 2012 edition which turns on with The Google written logo and under the screen with a padlock. After that it will be in bootloop with a black screen ( I can see the backlight turning on/off). This is also if pressing the power+volume down combination. Seems bootloader is corrupted. Anyway I installed everything on pc plus I'm using the WugFresh Nexus Root Toolkit and here are some examples which show what errors I'm encountering when trying to flash stock firmware .
Log:
Checking ADB/FASTBOOT Connectivity
adb devices
015d4a5ed8500c01 unauthorized
fastboot devices
There is also a notification popup which tells me:
"An ADB Interface device was found but it was listed as "unauthorized"
-Accept the RSA security prompt and check "Always allow from this computer"
At this point I don't know what to do, can you help me?

Same issue - following
I have the same issue now after trying to flash a kernel to fix the slow charging issue. Following this post for any update.

Sunil_511 said:
I have the same issue now after trying to flash a kernel to fix the slow charging issue. Following this post for any update.
Click to expand...
Click to collapse
Hi, Sunil_511...
Bit speculative this, and I can't say for certain if the following solution would work, because I've never had this problem myself. It also requires that your Nexus 7 be in a fully bootable state.
Go to your Nexus 7 Developer Options in the devices settings and tap on 'Revoke USB debugging authorisations'. Tap on OK to confirm. See attached screenshot.
This, theoretically, should wipe the slate clean.
Reboot both your N7 and your PC/laptop and when you next reconnect your N7 to your PC/laptop, you'll be asked to authorise this new USB connection when you perform some action that requires it.
Well, that's the plan anyway.
Good luck?.
Rgrds,
Ged.

Nope, in my case my tab is not booting to recovery or system. The only option is adb and it is showing unauthorized. My last option what i think off is to change the motherboard.

Following
I have the same error and like to follow

Sunil_511 said:
I have the same error and like to follow
Click to expand...
Click to collapse
Google search is your friend. I found the following two methods which seems to have worked for some people.
1. If you are using OS X*:
Reboot your phone into recovery mode.
Connect it to your computer.
Open the terminal and type:
cd ~/.android
adb push adbkey.pub /data/misc/adb/adb_keys
All done! Just adb shell reboot and feel the power!
*For Windows 10, .android directory is located in your the base of your C:\User\user_name directory.
2. Go to where you have stored adb files, open that folder and press "CTRL+SHIFT+Right Click" and select and click on Open Command Prompt option
Now enter following command
adb start-server (Enter)
adb usb (Enter)
After that your device is no longer unauthorized and you should be able to use any command in your Android Mobile using PC/ Computer.
If these fixes don't work, SEARCH.

thanks buddy, i have tried pushing the adb keys but no luck. I will try tge second option. Will let you know after trying.

No difference still the same
BxG4ever said:
Hi.
I have a nexus 7 2012 edition which turns on with The Google written logo and under the screen with a padlock. After that it will be in bootloop with a black screen ( I can see the backlight turning on/off). This is also if pressing the power+volume down combination. Seems bootloader is corrupted. Anyway I installed everything on pc plus I'm using the WugFresh Nexus Root Toolkit and here are some examples which show what errors I'm encountering when trying to flash stock firmware .
Log:
Checking ADB/FASTBOOT Connectivity
adb devices
015d4a5ed8500c01 unauthorized
fastboot devices
There is also a notification popup which tells me:
"An ADB Interface device was found but it was listed as "unauthorized"
-Accept the RSA security prompt and check "Always allow from this computer"
At this point I don't know what to do, can you help me?
Click to expand...
Click to collapse
tnsmani said:
Google search is your friend. I found the following two methods which seems to have worked for some people.
1. If you are using OS X*:
Reboot your phone into recovery mode.
Connect it to your computer.
Open the terminal and type:
cd ~/.android
adb push adbkey.pub /data/misc/adb/adb_keys
All done! Just adb shell reboot and feel the power!
*For Windows 10, .android directory is located in your the base of your C:\User\user_name directory.
2. Go to where you have stored adb files, open that folder and press "CTRL+SHIFT+Right Click" and select and click on Open Command Prompt option
Now enter following command
adb start-server (Enter)
adb usb (Enter)
After that your device is no longer unauthorized and you should be able to use any command in your Android Mobile using PC/ Computer.
If these fixes don't work, SEARCH.
Click to expand...
Click to collapse
Tried your suggestion.. Which i might have tried eventually from googling.. Doesn't make any difference.

Fixed
After doing all the researches, i had to buy a new motherboard and then replace it. Installed new rom and now using it. Spared about 1400INR for a 32 gig version.