Fastboot commands not recognized - Nexus 5X Q&A, Help & Troubleshooting

A little background info...
I bought a used Nexus 5x and received it running the stock rom with the bootloader unlocked. Not sure if the device was properly unrooted and returned to stock. It was running 7.1.2 out of the box. Also, I took the latest security update a few days ago, before attempting to root. I wanted to do some homework on the device before attempting root. It's been a while since I rooted a device. And wanted to refresh my memory.
When I began the process, I was having trouble getting my windows 7 PC (64) to recognize the device via adb. I did a little reading and found out my driver's needed to be updated. After I updated them the device could now be recognized in adb (yes, I did remember to enable USB debugging). Verified working by returning serial number after typing the adb devices command. So I was confident I could no proceed with flashing TWRP via fastboot.
The problem...
So now that I verified adb working and talking to my device I then typed adb reboot bootloader to access the bootloader (cause I honestly didn't want to disconnect the device and have to press buttons). The device successfully booted into the bootloader. My next step was to type fastboot devices in the command line but this is where the problem I'm having is. The device is not recognized. So I unplugged the device from the PC, opened a new command window in the platform-tools folder where fastboot resides, rebooted the device back into the bootloader, reconnected the device to the PC and attempted the fastboot devices command again and nothing, no device. I execute the command fastboot flash recovery TWRP.xx.xxxx.img and the command window says waiting for device or something like that. I am not sure what steps to take next. I've never had a problem getting a PC to recognize a device in bootloader mode before. I am pretty sure my environments are set up correctly. Is it something with the device? Is there a way to correct this? I'm really lost as to what to do here. I cannot root because I cannot flash custom recovery because I cannot get my PC to recognize the device in fastboot. Please, any help is appreciated. I'm stumped.
Update.
Resolved. Used a different pc with a fresh adb environment. Worked on the first try to flash twrp and super su.

ADB command not recognized
Hi there, i'm facing a similar problem. My 5x went into bootloop. It was on stock. After going through XDA posts, I was preparing to flash stock rom once again to see if that works. So I installed in my Windows 10 - SDK tools / platform. We I used command for ADB the command prompt say device listed, but does not come up with serial number. But when fastboot command is given, it returns with a serial number.
My question is what went wrong? My PC also dose not shows 5x in the explorer, despite installing drivers.
I would also like to know how to enable USB debugging when your phone is bricked?
Looking forward to any suggestions.....thanks upfront....

Related

ADB doesn't work for my Galaxy Nexus

Hi,
I realize a lot of people might have the same problem as I have, but haven't found the answer after searching for many hours. So here's my problem:
windows vista x64
installed android SDK and all related drivers
GN is recognized with correct driver in both fastboot mode and regular "on" mode.
GN is recognized as a device in regular on-mode with 'adb devices'
GN is recognized as a device in fastboot mode with 'fastboot-windows devices'
HOWEVER, when GN is put into fastboot mode, NO devices are found with 'adb devices' even though the icon for 'safely removing hardware' pops up with 'Android ADB Interface', which means the driver is correctly installed.
Someone please help explain why the device is not recognized by 'adb devices' command under fastboot mode even though it's recognized by the computer!
Summary:
GN is found with 'adb devices' for normal boot, but GN is not found under 'adb devices' for fastboot mode. I have reinstalled the android ADB driver, but still the same problem.
I am stressed out! Please help me
I have noticed exactly what you are talking about however what I have found is that it doesn't seem to need to be able to respond to the adb devices command. I was still able to unlock,root and flash multiple different boot.img and radio.img files through fastboot without the computer returning the device while in fastboot. Hope this helps.
Justin
P.S. while you are in fastboot mode it seems you may be looking for something different than standard adb commands. Fastboot is primarily used in this situation so a command for you will typically look something like this"
fastboot-windows flash boot boot.img
or
fastboot-windows flash radio radio.img (the radio.img and boot.img files used in these examples you would want located in the same folder as fastboot-windows)
if you want to try the software out without flashing it "permanently" try:
fastboot-windows radio radio.img (just forget the flash portion)
for unlocking the bootloader the command will look something like this:
fastboot-windows oem unlock
ADB isn't used in fastboot mode, fastboot.exe is.
ADB is for when the phone is running Android or recovery only.
Phone doesn't recognize ADB in fastboot
Phone doesn't recognize ADB in fastboot - have used every conceivable method - downloaded Samsung drivers. Downloaded PDANet. Uninstalled Samsung and tried Naked Samsung. I got the phone unlocked. But I CANNOT get the PC 64 to recognize ADB when I am in fastboot. HELPPPPPPP. I've been working on this for TWO DAYS, and it is RUINING my Christmas holiday.
Have you tried the driver installation/troubleshooting section of this post?
Unfortunately, yes. I tried the Samsung drivers. Then I tried the PDANet. I also tried the Samsung naked drivers. I was sure that MSKIPS toolkit was going to work, but when I typed in "2" for rooting, NOTHING happened. I'm at my wits end.
HeathCliffR said:
Phone doesn't recognize ADB in fastboot - have used every conceivable method - downloaded Samsung drivers. Downloaded PDANet. Uninstalled Samsung and tried Naked Samsung. I got the phone unlocked. But I CANNOT get the PC 64 to recognize ADB when I am in fastboot. HELPPPPPPP. I've been working on this for TWO DAYS, and it is RUINING my Christmas holiday.
Click to expand...
Click to collapse
Of course it doesn't.
AS STATED MULTIPLE TIMES IN THIS THREAD, YOU MUST USE FASTBOOT.EXE.
Please, read thread then reply.
When phone is turned ON - use adb
When in FASTBOOT mode - use (surprise surprise) fastboot
When phone is turned on or in recovery - use adb (check it with "adb devices" ,without " in cmd)
When in FASTBOOT mode - use fastboot (check it with "fastboot devices" ,without " in cmd)
In order to work fastboot you must have the fastboot.exe preferably in the same folder with adb
Try this
I tried installing PDAnet but no Joy.. but went to device manager and selected adb drivers and samsung from the list and that did the trick...

[answer] [how to] [CDMA/LTE] How To Re-Flash Factory-Image/Recover from Soft-Brick

How To Re-Flash Stock Image
Assuming you have ADB and everything setup already....
1. I just did this for practice. I did not need to do it –but I wanted to do it successfully before I “needed” to do it. I thought I would expand a little on the process and make it a little more noob friendly.
2. Getting started.
a. Read through the entire set of instructions first.
b. I am not responsible if you BORK your phone. I BORKED mine using someone else’s instructions and tried to write a very detailed step-by-step to help others out– but it is completely possible I have also made some small error in the instructions.
3. This will completely wipe your phone – including the SD partition – so transfer any files you need before you do this.
4. This will not re-lock your bootloader. It will remain unlocked.
5. Syntax (spelling, spaces, periods, dashes, CAPITOL, or lower case) matters. There were some spelling errors and file extensions left off the commands – and that will not work.
6.I used the file…
mysid-icl53f-factory-65895fa8.tgz
…which is 4.0.2 for the cdma/lte galaxy nexus [code name = toro/mysid]. The file is located here...
http://www.google.co...NiI9yTxKdUyW1tA
7. Unzip the file (I used 7.zip to do this).
Then you will have a .tar file…
mysid-icl53f-factory-65895fa8.tar
8. Unzip that file and you should end up with a folder…
mysid-icl53f
Inside that folder you will have five files…
i. bootloader-toro-primekk15.img
ii. flash-all.sh
iii. radio-cdma-toro-i515.ek05.img
iv. radio-toro-i515.ek02.img
v. image-mysid-icl53f.zip
Do not unzip “image-mysid-icl53f.zip”
9. Go ahead and copy and paste all these files to your directory…
/android/platform-tools
(or whatever directory you work from. You do not need the “flash-all.sh” so you do not have to copy it).
10. Open the Command Prompt in the directory where you have placed the necessary files by navigating to the directory, pressing shift, and then right mouse click (normally “C: /android/tools” or C: /android/platform-tools). This will bring up the dialogue box and you can select “open a command window here”.
11. Then enter the command…
adb devices
[…this should return your serial number…]
12. enter the command…
adb reboot-bootloader
[wait for bootloader – you should here 2 alert sounds – not just 1]
13. enter the command…
fastboot flash bootloader bootloader-toro-primekk15.img
14. enter the command…
fastboot reboot-bootloader
[wait]
15. enter the command…
fastboot flash radio radio-toro-i515.ek02.img
16. enter the command…
fastboot reboot-bootloader
[wait]
17. enter the command…
fastboot flash radio-cdma radio-cdma-toro-i515.ek05.img
18. enter the command…
fastboot reboot-bootloader
19. enter the command…
fastboot -w update image-mysid-icl53f.zip
20. So you know, steps 17 (flashing the cdma radio) and step 19 (flashing the update image) took longer than the rest so don't freak out - just be patient. If you did the steps in the proper order after entering the last command your phone should reboot on its own and be completely “fresh”. If you made mistakes (like I did the first time) and flashed the radios out of order (like I did) or did not wait long enough for an “Okay” dialogue (like I did) then when you reboot you will have no signal and no phone number and you will have to go through the process again and do it right (like I did).
Hope this helps someone.
Credit goes to JW at that other site for the fastboot commands. I just added detail for the write up.
Great guide, but what if the serial number doesn't show up?
Thank you for the excellent walkthrough. I am following it, but when I enter "adb devices" at the command prompt I receive "list of devices attached" but no serial number. Also, my Nexus displays: "Fastboot Command Read Error -2147483647". I did a battery pull after getting stuck in a bootloop, and am trying to recover. I can unlock and relock the bootloader, but that is the only command that is working.
Ominous39061 said:
Thank you for the excellent walkthrough. I am following it, but when I enter "adb devices" at the command prompt I receive "list of devices attached" but no serial number. Also, my Nexus displays: "Fastboot Command Read Error -2147483647". I did a battery pull after getting stuck in a bootloop, and am trying to recover. I can unlock and relock the bootloader, but that is the only command that is working.
Click to expand...
Click to collapse
if it does not return a serial number than the phone is not being recognized. I believe that there are 2 different sets of drivers that are needed. Let me look for the link and info.
the fact that it returns "list of devices attached" but no number means that it is not finding your device which means it is probably a driver issue. let me see what I can come up with. But I am no expert at any of this.
Ok - so I just did some testing of my own. I ran into the same problem as you. And I know that I have the drivers installed. So what I did was try and "shut down" any thing that could interfere with with ADB/Fastboot.
Any tethering apps that you may have - PDA NET, Easy Tether, etc, could possibly do this. Also - when you plug your phone in - and the Auto Play options pop up for FTP (File Transfer Protocol) - X out of that.
I initially plugged in my phone. Opened the command prompt in my platform-tools folder. typed in...
adb devices
...and I got the same message as you. I then "turned off" everything that could be causing problems with the process. I unplugged the phone and replugged it in (and closed the dialog box again) and then re-opened the command prompt and entered...
adb devices
...and then I got the proper return message.
thepolishguy said:
Ok - so I just did some testing of my own. I ran into the same problem as you. And I know that I have the drivers installed. So what I did was try and "shut down" any thing that could interfere with with ADB/Fastboot.
Any tethering apps that you may have - PDA NET, Easy Tether, etc, could possibly do this. Also - when you plug your phone in - and the Auto Play options pop up for FTP (File Transfer Protocol) - X out of that.
I initially plugged in my phone. Opened the command prompt in my platform-tools folder. typed in...
adb devices
...and I got the same message as you. I then "turned off" everything that could be causing problems with the process. I unplugged the phone and replugged it in (and closed the dialog box again) and then re-opened the command prompt and entered...
adb devices
...and then I got the proper return message.
Click to expand...
Click to collapse
I got the same problem with mine i dont have anything like pda net installed but nothing i have tried is able to get adb to list my phone
Getting the same issue myself...help!
Thank you so much I'm a total noob with this stuff but your guide was very helpful!
Noev said:
I got the same problem with mine i dont have anything like pda net installed but nothing i have tried is able to get adb to list my phone
Click to expand...
Click to collapse
ChuckTu said:
Getting the same issue myself...help!
Click to expand...
Click to collapse
Ok - so another member posted this...
ADB/Naked Drivers
...and I have heard some people say that it was very helpful. So hopefully this will help you guys to get your devices recognized.
Then there is also this thread and the OP said this...
Code:
On your windows PC. Use the root guide by bman
( [url]http://rootzwiki.com...nlock-and-root/[/url] )
and download the third option for drivers. Extract all
of these tho wherever you have your fast boot
( for me it was c:/users/thatmayh3mguy/) then run
fastboot in the cmd. The adbapi.DLL file will be there
and will make the fast boot work. I didn't have the sdk
installed ( fresh install of win 7 ultimate last week and
don't have it all set up yet) and it worked
thread...
adb help/getting your drivers installed correctly
OK - here is also another method that I found. I have PDA Net installed and I did not have any issues with fastboot. Here are some instructions that say the drivers that PDA Net use are the same drivers that you need for fastboot. So here is a link to the thread and hopefully one of these methods is going to work for you.
Installing PDA Net to solve your fastboot problems
ah ha - just read something else that I should have thought of...
If your phone is already in bootloader - the command...
adb devices
...will not work. so if you are in bootloader you should try the command...
fastboot devices
...instead and see if that returns anything for you.
just wanted to jump back in hear and say i was able to get mine working again. adb was allowing me to lock/unlock the bootloader i toggled that on and off then when i went to boot my phone it took a long time to boot but finally did. Thanks for all the help was in a real jam there for a minute. I used the naked adb drivers posted above not sure if that did anything but it worked for me. Thanks again!
Noev said:
just wanted to jump back in hear and say i was able to get mine working again. adb was allowing me to lock/unlock the bootloader i toggled that on and off then when i went to boot my phone it took a long time to boot but finally did. Thanks for all the help was in a real jam there for a minute. I used the naked adb drivers posted above not sure if that did anything but it worked for me. Thanks again!
Click to expand...
Click to collapse
cool. glad to hear it.
trying this with a Linux OS
So I have a Samsung Galaxy Nexus on Verizon and I put 4.0.4 (IMM30B) using the Galaxy Nexus ToolKit on Windows. Since then I've had a few issues with performance so I want to go back to stock (ICF53F) then maybe goto latest IMM76K (I think). I've retrieved the zip file from steps above and untar'd the file, but when I try to flash the boot file it just sits there waiting for device. I'm not sure what it's waiting for. I'm in fastboot mode and then plugged in the phone to the usb cord but nothing happens.
Any ideas?
UPDATE:
I figured out the issue. On a linux machine using fastboot requires super user privileges. Maybe an update to the instructions may be in order?
CMD keeps telling me waiting for device.
How long will it takes first time?
this after entering: fastboot flash bootloader bootloader-toro-primekk15.img
ladyminnie said:
CMD keeps telling me waiting for device.
How long will it takes first time?
this after entering: fastboot flash bootloader bootloader-toro-primekk15.img
Click to expand...
Click to collapse
Does "fastboot devices" return your device?
If not, you may have a driver issue.
Sent from my Galaxy Nexus using Tapatalk 2
A mistake I made a while ago, if you are sure that you have already installed ADB drivers, and your device still isn't being recognized by ADB..
Be sure USB Debugging is checked on.
Sent from my Galaxy Nexus using Tapatalk 2
adb devices returns my number from the phone
adb reboot-bootloader does bring my phone into bootloader
than it stops with the next command. I waited for 45 minutes/
---------- Post added at 07:03 PM ---------- Previous post was at 06:57 PM ----------
usb debugging was/is still on
The white small led is lightning up every 10 seconds orso
problem solved with:
http://forum.xda-developers.com/showthread.php?t=1766475

[Q] adb/fastboot can't find device in bootloader, but they can do it when booted

Dear all,
I have worked on building Android from source code for few weeks. It used to be fine to me with my galaxy nexus, I can connect to my device via adb and fastboot and flash either the factory ROM or ROM built by me into my device. However, when updating the phone into 4.3, I forgot to extract drivers into the built directory and flash the built image into my device. Is surely can't work, and the screen turn off once "Google" is shown, so I would like to reflash it back to other image. However, my laptop can't recognize my Nexus S anymore in the bootloader. I can use "adb shell" once the device is normally booted (even without screen), but once I type "adb reboot bootloader", the connection is lost! Both "adb and fastboot devices" show nothing....
I have searched the forum and stackoverflow all day but can't find helpful information. There are many threads talking about unable to connect devices but 70% of them are driver-related issue and 30% of them, ex: sudo adb, just don't work for me. I think I am not facing the driver issue because I still can use "adb shell" once the device is normally booted (not in bootloader mode). Moreover, I also tried few debrick tools contributed by xda community but with no luck.
I am wondering if there is any way that I can reflash image to my device without accessing it in bootloader mode? (ex: push image in to device via adb shell when device is normally booted?). I am also wondering if there is any way to fix this problem. Any suggestion is very appreciated!: crying:
Thanks
Yu-Chih
ps. the most closed thread I found is called "ADB can discover devices but not fastboot" in stackexchange (I am not allowed to post the link)
but it seems there is no answer in this thread
I'm not a expert, but do you know how is the DD command ?,
I wonder, is you can DD the boot loader into the nexus partition?
chongns said:
I'm not a expert, but do you know how is the DD command ?,
I wonder, is you can DD the boot loader into the nexus partition?
Click to expand...
Click to collapse
Thanks for the reply. I am not sure what I should do with dd command? Could I use it to reinstall the drivers into device?
by the way, I found there is a error showing up in the bottom of screen in fastboot mode, "Fastboot Command Read Error -2147483647", and many closed threads (sorry that I am not allowed to post url because I am new). Some suggests are to reinstall drivers (even thought I don't get if they mean reinstall the usb driver for laptop or for android), but it seems not solved yet.
Yu-Chih
Dear all, I think I have tried all potential solution about "fastboot command read error -2147483647" that I can find at internet......
Here is what solution I have tried:
1. sudo the command of adb and fastboot
2. update drivers
3. update sdk
4. use another cable
5. install other drivers (win7), ex: naked driver
6. Wug's root kit
What I can't try:
1. enable USB debug mode at phone (because I don't have screen of it but only adb shell)
2. remove(uninstall) other software such as PDA net...etc (I don't try this because my system is clean-installed win7/MAC/ubuntu)
I think this problem is kind of common but my situation seems slightly different from others, that I can find the device when my device is normally booted but I can't recognize it when it is rebooted into bootloader (showing "fastboot command read error -2147483647" at bottom). I am starting to believe it either be the problem that I don't activate the USB debugging in my new flashed image (but I can connect it with adb when the device is normalled booted) or the usb driver in my device is broken.
Anyone has any idea.....:crying:
eddyxdxda said:
Thanks for the reply. I am not sure what I should do with dd command? Could I use it to reinstall the drivers into device?
by the way, I found there is a error showing up in the bottom of screen in fastboot mode, "Fastboot Command Read Error -2147483647", and many closed threads (sorry that I am not allowed to post url because I am new). Some suggests are to reinstall drivers (even thought I don't get if they mean reinstall the usb driver for laptop or for android), but it seems not solved yet.
Yu-Chih
Click to expand...
Click to collapse
Dear all,
This is my latest update. I wipe out the whole system of Ubuntu and Win7 and restart everything from the first step. Magically, the new Win7 + Wug's root kit can successfully flash new image into my phone. But also magically, the ubuntu system faces the same issue as I described (no connection in bootloader with the error code but connection is fine after the device is booted). The bright side of this is that I am finally able to try other solutions, e.g., enabling debugging mode, but the sad part is that I still get no luck at Ubuntu and MAC.........can't believe it works at Win7 but not at Ubuntu and MAC.....
Yu-Chih
eddyxdxda said:
Dear all, I think I have tried all potential solution about "fastboot command read error -2147483647" that I can find at internet......
Here is what solution I have tried:
1. sudo the command of adb and fastboot
2. update drivers
3. update sdk
4. use another cable
5. install other drivers (win7), ex: naked driver
6. Wug's root kit
What I can't try:
1. enable USB debug mode at phone (because I don't have screen of it but only adb shell)
2. remove(uninstall) other software such as PDA net...etc (I don't try this because my system is clean-installed win7/MAC/ubuntu)
I think this problem is kind of common but my situation seems slightly different from others, that I can find the device when my device is normally booted but I can't recognize it when it is rebooted into bootloader (showing "fastboot command read error -2147483647" at bottom). I am starting to believe it either be the problem that I don't activate the USB debugging in my new flashed image (but I can connect it with adb when the device is normalled booted) or the usb driver in my device is broken.
Anyone has any idea.....:crying:
Click to expand...
Click to collapse

adb reboot bootloader - device not found

I've installed ADB/Fastboot/USB Drivers from http://forum.xda-developers.com/showthread.php?t=2588979 (tried both 1.3 and 1.4.2 versions.
Booted my SW3 into Fastboot (whitescreen, with fastboot written on it) - attached to the PC, Device shows up as SAMSUNG Android Phone > Android ADB Interface
Ran CMD as an Administrator.
Typed, adb reboot bootloader.... Error: device '<null>' not found.
Typed adb devices... not listed.
Okay, so using a driver stripper (and windows program uninstaller), removed all Samsung phone USB drivers, KIES and existing ADB drivers. Re-ran the top tool to re-install everything. Repeated process, still showing up as SAMSUNG Android Phone > Android ADB Interface. Still not detected.
No idea at all what's going on here. I've tried cleaning the drivers multiple times. Other USB ports (2.0 & 3.0). Tried manually updating the driver to Google Inc. driver variants (9.0-11.0)
Really appreciate any help here.
if you're into bootloader you have to type fastboot devices , adb only works outside fastboot in system mode
woschirmer said:
if you're into bootloader you have to type fastboot devices , adb only works outside fastboot in system mode
Click to expand...
Click to collapse
Mind if I pick your brain on that point. I'm used to ADB on a smartphone, I really expected this to be similar but there's clearly some catches.
I don't think I'm into bootloader yet because the command 'adb reboot bootloader, or adb reboot-bootloader' doesn't do anything other than throw the error mentioned above.
However, typing fastboot devices gives me.
14442D38F870562 fastboot
But this doesn't allow me to process to run through the other ADB commands I need to complete. 'adb devices' still lists nothing.
In short, I'm trying to downgrade my SW3 to LCA32, as required to turn on the NFC functionality https://github.com/pimpimmi/LibreAlarm/wiki/How-to-install-NFC-on-Sony-Smartwatch-3
It's to assist in enhancing a medical device that uses NFC.
Sideburnt said:
Mind if I pick your brain on that point. I'm used to ADB on a smartphone, I really expected this to be similar but there's clearly some catches.
I don't think I'm into bootloader yet because the command 'adb reboot bootloader, or adb reboot-bootloader' doesn't do anything other than throw the error mentioned above.
However, typing fastboot devices gives me.
14442D38F870562 fastboot
But this doesn't allow me to process to run through the other ADB commands I need to complete. 'adb devices' still lists nothing.
In short, I'm trying to downgrade my SW3 to LCA32, as required to turn on the NFC functionality https://github.com/pimpimmi/LibreAlarm/wiki/How-to-install-NFC-on-Sony-Smartwatch-3
It's to assist in enhancing a medical device that uses NFC.
Click to expand...
Click to collapse
Okay progress, I see what you mean now adb reboot bootloader doesn't work. But fastboot reboot bootloader does. This is allowing me to move through the necessary TWRP and img steps. Thanks.

(help please) htc one m8 not showing in adb command prompt while in fastboot.

so I'm trying to fastboot flash TWRP. That way I can root it after the custom recovery is set up.
My HTC is S-OFF, I installed android studio for the adb fastboot command prompt. Then installed all HTC drivers. I then plugged in my HTC into my pc which is running windows 10 via USB port which are 3.0
I opened up the folder where the fastboot was installed when I downloaded android studio. Then I pushed shift and right clicked and chose open command promp. I then typed: adb devices
The command prompt runs and it shows my HTC in the device list. Then I typed: adb reboot bootloader. It boots to the fastboot.
And so here is my problem........... once I boots to fastboot I thenjoy again type: adb devices. Cmd runs and the device list is blank. I checked my drivers and device in device manager and everything is fine. Even I'm fastboot it reads the drivers no problem.
I've tried everything. I've read to try reinstalling the drivers, try installing universal drivers, try different USB cables, try different USB ports that arent 3.0 port, I even tried a different adb fastboot software and still came up with the same outcome. I've read a bunch of different threads and just can't find anything. I am just stuck I don't know what to do. And am asking for help please. I would really appreciate the help and guidance. Because....... this s**t is driving me crazy haha. I've rooted galaxies and have my s5 on lollipop rooted. But
I'm still a noob and especially with HTC. So please some one lend me a helping head I am at a complete loss.
Whisperz6662 said:
so I'm trying to fastboot flash TWRP. That way I can root it after the custom recovery is set up.
My HTC is S-OFF, I installed android studio for the adb fastboot command prompt. Then installed all HTC drivers. I then plugged in my HTC into my pc which is running windows 10 via USB port which are 3.0
I opened up the folder where the fastboot was installed when I downloaded android studio. Then I pushed shift and right clicked and chose open command promp. I then typed: adb devices
The command prompt runs and it shows my HTC in the device list. Then I typed: adb reboot bootloader. It boots to the fastboot.
And so here is my problem........... once I boots to fastboot I thenjoy again type: adb devices. Cmd runs and the device list is blank. I checked my drivers and device in device manager and everything is fine. Even I'm fastboot it reads the drivers no problem.
I've tried everything. I've read to try reinstalling the drivers, try installing universal drivers, try different USB cables, try different USB ports that arent 3.0 port, I even tried a different adb fastboot software and still came up with the same outcome. I've read a bunch of different threads and just can't find anything. I am just stuck I don't know what to do. And am asking for help please. I would really appreciate the help and guidance. Because....... this s**t is driving me crazy haha. I've rooted galaxies and have my s5 on lollipop rooted. But
I'm still a noob and especially with HTC. So please some one lend me a helping head I am at a complete loss.
Click to expand...
Click to collapse
You're using the wrong command.
You can't use adb commands when booted to bootloader, only while booted to system, as you did the first time.
Once you do adb reboot bootloader use fastboot devices and your phone will show in cmd. You need to use fastboot commands while booted to bootloader.
xunholyx said:
You're using the wrong command.
You can't use adb commands when booted to bootloader, only while booted to system, as you did the first time.
Once you do adb reboot bootloader use fastboot devices and your phone will show in cmd. You need to use fastboot commands while booted to bootloader.
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Wow that was so simple...... (face palm)
You are a saint haha. Thank you very much that was getting to me. It did show up was able to flash twrp.
No where did I see anything about typing fastboot in cmd instead of adb while phone was in fastboot. Well it might of and I might of just not of understood it when I read it. Again thank you I appreciate it

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