[Q] Stuck on HTC Logo S-OFF Dev Edition TWRP installed - One (M7) Q&A, Help & Troubleshooting

All,
I was attempting to reset my phone via TWRP, wiped everything and after the wipe, I'm stuck on the HTC LOGO. I can get into fastboot and into TWRP recovery. But that is pretty much it. I tried installing RUU but the computer does not recognize the phone. I tried ADB Fastboot Devices, and no devices.
Not sure what my next step is. I just want to get it back to stock.
Thanks!

Nutzzer said:
All,
I was attempting to reset my phone via TWRP, wiped everything and after the wipe, I'm stuck on the HTC LOGO.
Click to expand...
Click to collapse
Probably because you have wiped /system, the OS
I tried ADB Fastboot Devices, and no devices.
Click to expand...
Click to collapse
You probably have drivers issues. What is your computer OS and your hboot version? Do you have latest HTC drivers installed?
Not sure what my next step is.
Click to expand...
Click to collapse
Fix your drivers so you can post the output of "fastboot getvar all" and we can determine what you need to flash.

As I recall, I never had driver issue when connecting my phone to my win 7 workstation. Again, I can only get into fastboot. You think that is the reason why I can't connect via usb?
I will reinstall the drivers again just in case.

Nutzzer said:
As I recall, I never had driver issue when connecting my phone to my win 7 workstation. Again, I can only get into fastboot. You think that is the reason why I can't connect via usb?
I will reinstall the drivers again just in case.
Click to expand...
Click to collapse
if you are using windows 7, check that when the phone is connected via USB, in windows device manager, it should be listed under "Android USB Devices" ---> "My HTC" when booted in bootloader fastboot mode or under "Android Phone" --> "Android ADB Interface" when booted in recovery. If not the case, re-install your drivers. If your phone is not detected at all by the computer, you have USB connectivity issue either because a bad USB cable or a bad usb port (PC or phone).
"fastboot devices" should output your phone s/n when booted in bootloader fastboot mode
"adb devices" should output your phone s/n when booted in recovery mode.

Related

[Q] ADB doesnt recognize HTC One in Recovery

I have a nandroid backup.
Its too big to keep on the phone at all times
Therefore its been placed on my computer
And in the case i need it (boot-loop), how can i transfer the backup while in CWM?
ADB seems to be the simplest way, but adb cannot find my device when it is in the bootloader or in custom recovery.
Am i missing something? Or is there another way to solve this issue.
If anyone could help, id be very grateful.
Hi
Greetings,
When you boot in fastboot and connect your phone to pc does it shows fastboot usb if yes then it is recognised if no then you will have to download the drivers if HTC and install them
Sent from my HTC Sensation Z710e using xda premium
shrex said:
Hi
Greetings,
When you boot in fastboot and connect your phone to pc does it shows fastboot usb if yes then it is recognised if no then you will have to download the drivers if HTC and install them
Sent from my HTC Sensation Z710e using xda premium
Click to expand...
Click to collapse
yes fastboot usb is shown and all fastboot commands work, its just that adb doesnt work when its in bootloader or recovery.
I did some more digging around and found that when the phone is connected while in recovery, the computer recognizes it as a "HTC MTP device"..and thats it. I cant upgrade the drivers of the said device or essentially do anything with it.
What am i missing?
ADB should only work under Recovery. I found that with the last HTC driver it didn't install for when you are under Bootloader, Recovery, or Fastboot. I forgot what version actually worked the best but it might have been the 3 series drivers. Anyway while under Recovery you'll have to force the HTC drivers to install thru your Device Manager. It will not automagically detect them. I would start with these drivers and try them out.
HTCDriver_4.2.0.001.exe
Universal_Naked_Driver_0.72.zip
HTCDriver3.0.0.007.exe
TygerByte said:
ADB should only work under Recovery. I found that with the last HTC driver it didn't install for when you are under Bootloader, Recovery, or Fastboot. I forgot what version actually worked the best but it might have been the 3 series drivers. Anyway while under Recovery you'll have to force the HTC drivers to install thru your Device Manager. It will not automagically detect them. I would startpage these drivers and try them out.
HTCDriver_4.2.0.001.exe
Universal_Naked_Driver_0.72.zip
HTCDriver3.0.0.007.exe
Click to expand...
Click to collapse
Thanks for the reply, ive tried the first two drivers, work fine when the phone is booted, but no avail in recovery. The laptop shows the device connected as "My HTC" while in recovery, but im unable to use adb commands as adb doesnt connect to it. Ill try the third 3 series driver and post an update in a few.
UPDATE: wont install, im running windows 8 and it says this driver is not compatible with this operating system.
Bhavpreet said:
Thanks for the reply, ive tried the first two drivers, work fine when the phone is booted, but no avail in recovery. The laptop shows the device connected as "My HTC" while in recovery, but im unable to use adb commands as adb doesnt connect to it. Ill try the third 3 series driver and post an update in a few.
UPDATE: wont install, im running windows 8 and it says this driver is not compatible with this operating system.
Click to expand...
Click to collapse
Does it say its offline? What do you actually see when using adb. As for the driver in Windows 8, you have to disable driver signature checking to use them. There is a thread in the Nexus 4 forum on how to do this, which is here:
http://forum.xda-developers.com/showpost.php?p=33463359&postcount=109
EddyOS said:
Does it say its offline? What do you actually see when using adb. As for the driver in Windows 8, you have to disable driver signature checking to use them. There is a thread in the Nexus 4 forum on how to do this, which is here:
http://forum.xda-developers.com/showpost.php?p=33463359&postcount=109
Click to expand...
Click to collapse
installed the 3 series driver, still the same problem. Heres some photos (which i should have attached originally) of whats happening.
The pictures are while the phone is normally booted, and then when the phone is in recovery.
Edit: Uninstalled all of the HTC drivers and devices inside the device manager, and only installed the Universal Naked Driver, the phone now shows up with a different name in device manager, but STILL does not work while in recovery.
Another pictures attached of how device manager looks with just the Universal Driver while in recovery.
anyone?
i have the same problem as u.. I tried both my missus Windowss PC now.. It used to detect it before. Now it suddenly doesn´t anymore. On my mac, same deal. Nothing detected.
Been googling around and i have found threads but they all end unsolved. ADB returns ADB devices blank. Kill-server or adb remount does nothing. in Fastboot USB its totally a ghost.
found any fixes?
I'm clueless too. I can only think to try other recoveries. Philz CWM comes to mind. I also uploaded the latest google usb drivers for you incase you want to try that out too. Google v7 USB drivers I think they are called. You'll probably have to force install them since they won't detect. Included the adb and fastboot from the SDK too. Last thing I can probably suggest is to try different USB port. Oh and TWRP too since it has the terminal built in it you could try starting up ADB from there.
Me too...
Did anyone ever resolve this? I'm facing it now, having tried multiple recoveries. Previously was able to use adb fine. (I'm on a mac.)
bretula said:
Did anyone ever resolve this? I'm facing it now, having tried multiple recoveries. Previously was able to use adb fine. (I'm on a mac.)
Click to expand...
Click to collapse
In case this helps someone else: The reason I lost adb was that I'd installed the drivers on my mac for EasyTether. There's a note about this on the EasyTether FAQ page. When I disabled the EasyTether driver, I was able to use adb again.
TygerByte said:
I'm clueless too. I can only think to try other recoveries. Philz CWM comes to mind. I also uploaded the latest google usb drivers for you incase you want to try that out too. Google v7 USB drivers I think they are called. You'll probably have to force install them since they won't detect. Included the adb and fastboot from the SDK too. Last thing I can probably suggest is to try different USB port. Oh and TWRP too since it has the terminal built in it you could try starting up ADB from there.
Click to expand...
Click to collapse
have you tied all-in-one-tool-kit ???
Not sure if this will help, but I had an issue like this with my asus tab - adb worked fine in android os but not in twrp recovery, device manager showing it as other device.
While in recovery with device connected to pc I followed this how-to from the device manager part on and got adb working in recovery.
ADB not connecting
Bhavpreet said:
I have a nandroid backup.
Its too big to keep on the phone at all times
Therefore its been placed on my computer
And in the case i need it (boot-loop), how can i transfer the backup while in CWM?
ADB seems to be the simplest way, but adb cannot find my device when it is in the bootloader or in custom recovery.
Am i missing something? Or is there another way to solve this issue.
If anyone could help, id be very grateful.
Click to expand...
Click to collapse
Re Install HTC drivers manually, windows sees HTC until you boot into recovery mode and try to use ADB, It worked for me.
HTC One(M7) not recognized by adb
Condition:
HTC One(M7) - rooted; s-ON; GPE ROM 4.3.1
Recovery - CWM
I have a similar problem with my HTC One(M7). I'm working mainly on a mac (OSX Maverick), but I have also tried using a PC (Windows 8). I accidentally wiped the data on the phone while in recovery, and now I have a phone that only boots to the bootloader and recovery. Since backups usually take a lot of memory, I kept all of mine on my computer. The simple fix I've been trying to do is sideload the ROM to the phone through adb, however adb does not find the device. I repeatedly get the "device not found". However the device is recognized in fastboot, and i always get the "fastboot USB" when it is connected. So I am unable to flash the ROM I need to the phone because it is unable to communicate with either computer. On the PC I made sure to have had the proper drivers, I downloaded HTC SYNC, and have tried updating them manually. However I always get the "error Code 43". The PC also does not recognize the device, so again I am unable to communicate with the device. Can I plz get any help, I have tried reading multiple forums, but have had no luck trying any solution. I would really appreciate any advise; Im desperate to fix the phone.
TonyDEV said:
Condition:
HTC One(M7) - rooted; s-ON; GPE ROM 4.3.1
Recovery - CWM
I have a similar problem with my HTC One(M7). I'm working mainly on a mac (OSX Maverick), but I have also tried using a PC (Windows 8). I accidentally wiped the data on the phone while in recovery, and now I have a phone that only boots to the bootloader and recovery. Since backups usually take a lot of memory, I kept all of mine on my computer. The simple fix I've been trying to do is sideload the ROM to the phone through adb, however adb does not find the device. I repeatedly get the "device not found". However the device is recognized in fastboot, and i always get the "fastboot USB" when it is connected. So I am unable to flash the ROM I need to the phone because it is unable to communicate with either computer. On the PC I made sure to have had the proper drivers, I downloaded HTC SYNC, and have tried updating them manually. However I always get the "error Code 43". The PC also does not recognize the device, so again I am unable to communicate with the device. Can I plz get any help, I have tried reading multiple forums, but have had no luck trying any solution. I would really appreciate any advise; Im desperate to fix the phone.
Click to expand...
Click to collapse
Take a look at this FAQ post and see if this doesn't help solve your problems. I would also recommend updating your CWM recovery to the latest.
having a similar problem. My system and everything is wiped all I have is TWRP 2.6.0.1 and I'm trying to end with cyanogenmod. theres no sdcard slot so my only option is an adb push through recovery. Adb doesnt recognize it, it just doesn't return anything in the list of devices when i type adb devices. in devmgmt it lists my phone as a disk drive... I have tried to update the drivers to the universal naked ones, but then windows says that it already found and installed the best driver software I have the T-Mobile variant but I thought I'd post here since this problem is more than likely not carrier specific and I didn't wanna add another thread. I can do fastboot just fine when in fastboot usb mode, but in recovery no adb... I can't install the naked drivers it just says that the file is incompatible
blu422 said:
having a similar problem. My system and everything is wiped all I have is TWRP 2.6.0.1 and I'm trying to end with cyanogenmod. theres no sdcard slot so my only option is an adb push through recovery. Adb doesnt recognize it, it just doesn't return anything in the list of devices when i type adb devices. in devmgmt it lists my phone as a disk drive... I have tried to update the drivers to the universal naked ones, but then windows says that it already found and installed the best driver software I have the T-Mobile variant but I thought I'd post here since this problem is more than likely not carrier specific and I didn't wanna add another thread. I can do fastboot just fine when in fastboot usb mode, but in recovery no adb...
Click to expand...
Click to collapse
your TWRP is very outdated update to 2.6.3.3
http://techerrata.com/browse/twrp2/m7
Install this driver then plug your phone in and enter TWRP
http://www.mediafire.com/download/j55vk6qbbr6250c/HTCDriver_4.8.0.002.exe
If device manager does not see your phone as My HTC under ADB Interface it's installed wrong.
clsA said:
your TWRP is very outdated update to 2.6.3.3
http://techerrata.com/browse/twrp2/m7
Install this driver then plug your phone in and enter TWRP
http://www.mediafire.com/download/j55vk6qbbr6250c/HTCDriver_4.8.0.002.exe
If device manager does not see your phone as My HTC under ADB Interface it's installed wrong.
Click to expand...
Click to collapse
thanks! did what you said i installed the drivers and the installation crashed the first time, then the second time it game me the option to remove or repair and i repaired and it worked thank you!!!
---------- Post added at 02:55 PM ---------- Previous post was at 02:37 PM ----------
clsA said:
your TWRP is very outdated update to 2.6.3.3
http://techerrata.com/browse/twrp2/m7
Install this driver then plug your phone in and enter TWRP
http://www.mediafire.com/download/j55vk6qbbr6250c/HTCDriver_4.8.0.002.exe
If device manager does not see your phone as My HTC under ADB Interface it's installed wrong.
Click to expand...
Click to collapse
so i have adb... but now it wont let me flash cyanogenmod... error executing updater binary in zip.... just fails.... help? updated to twrp 2.7.1.1. that fixed the problem

[Q] [HELP]cannot connect to pc with adb or fastboot or in pc devices

cannot connect to pc i have unlocked bootloader with htcdev and installed cwm touch v 6.0.4.4 one Flyhalf205's thread. that all worked fine.
but after doing a nandroid backup for my uk EE htc one cid htc_001. i then rebooted phone from recovery but now when i connect phone to laptop it does not recognize it through windows. nothing happens when i fastboot devices either please help thanks.
nathlynn22 said:
cannot connect to pc i have unlocked bootloader with htcdev and installed cwm touch v 6.0.4.4 one Flyhalf205's thread. that all worked fine.
but after doing a nandroid backup for my uk EE htc one cid htc_001. i then rebooted phone from recovery but now when i connect phone to laptop it does not recognize it through windows. nothing happens when i fastboot devices either please help thanks.
Click to expand...
Click to collapse
You cannot do fastboot devices in recovery mode.
in recovery mode you can do adb devices to check if your phone is recognized by your laptop
in fastboot usb mode, you can do fastboot devices to check if your phone is recognized by your laptop
I have the same. Was working fine beforehand now nothing. When I connect to the PC with the phone booted it connects then a second or two later disconnects, like it "doesn't like" the connection. It tried to install HTC MTP driver but fails as it says the "device is disconnected." Fastboot USB works fine though and I can carry out fastboot commands from bootloader, but no ADB
[email protected] said:
You cannot do fastboot devices in recovery mode.
in recovery mode you can do adb devices to check if your phone is recognized by your laptop
in fastboot usb mode, you can do fastboot devices to check if your phone is recognized by your laptop
Click to expand...
Click to collapse
I tried fast boot devices in fast boot USB by going into minisdk. Didn't try in recovery would have been good to try adb devices in recovery because I was stuck in that when first tried the custom recovery but a hard reset kicked it back out. Got recovery sorted just wanted to take nandroid backup off phone to PC and put root files which I'm still trying to get best 1's any idea where to get them where URL link is working? I've tried fastboot so doesn't work and basic trying to connect phone to PC for file transfer doesn't work either
stovie_steve said:
I have the same. Was working fine beforehand now nothing. When I connect to the PC with the phone booted it connects then a second or two later disconnects, like it "doesn't like" the connection. It tried to install HTC MTP driver but fails as it says the "device is disconnected." Fastboot USB works fine though and I can carry out fastboot commands from bootloader, but no ADB
Click to expand...
Click to collapse
Ok so not only person. When I try connect mine doesn't even flag up I've connected a device USB debugging starts up on phone but have just noticed USB connection doesn't show. Plus I connect to PC and doesn't make the sound as I've it recognized my connecting anything. Fastboot USB comes up empty. I've been spending a couple hours here and there for past 2 nights trying to set phone up ready for rum runner. But my other question is if I'm already on htc_001 there's no need for me to change CID num anyways? Thanks
Try going to command prompt and typing in set devmgr_show_nonpresent_devices=1 followed by start devmgmt.msc
Click on view and show hidden devices. This will show devices which are not connected but have been installed. Look for something like android phone or android device and update the drivers by selecting update driver > let me select > have disk and then select the driver from here:
http://forum.xda-developers.com/showthread.php?t=2386956
Try that and see if it works
I'm all sorted now thanks just kept at it.
Sent from my HTC One using XDA Premium 4 mobile app

Bootloop with broken ClockworkMod

I messed up my phone a while ago by trying to update to 4.4 while being S-off. Due to several things I ended up with a phone that stays in a bootloop. I can still get to the Fastboot Menu, but even when I try to go into Recovery the phone boots and for a fraction of a second I can see the Clockworkmod Logo before the devices reboots again (so I assume I messed up Clockworkmod as well).
So I tried to sideload Clockworkmod via USB but ADB doesn't seem to recognize the phone in Windows 8. I installed the official HTC package, but the device doesn't show up when I use 'adb devices', so I can't sideload anything (phone was connected to a USB 2.0 port on the rear panel). I tried the same thing on my MacBook Retina with Windows 7 on Bootcamp, same problem. I read there might be problems with USB3 but my MacBook doesn't have USB2 ports any more. I havent tried getting into my phone in OSX or Linux yet since I couldn't find a decent guide, I only know a few basics with the Unix terminal.
Can anyone give me any tip how to get my phone to work again? I also have a USB OTG Adapter, maybe that helps?
Here is a video of my phone with the Clockworkmod Logo bootcycle (can't post links yet so please copy-paste it).
youtu.be/TjG50x7EcUw
cecay said:
I messed up my phone a while ago by trying to update to 4.4 while being S-off. Due to several things I ended up with a phone that stays in a bootloop. I can still get to the Fastboot Menu, but even when I try to go into Recovery the phone boots and for a fraction of a second I can see the Clockworkmod Logo before the devices reboots again (so I assume I messed up Clockworkmod as well).
So I tried to sideload Clockworkmod via USB but ADB doesn't seem to recognize the phone in Windows 8. I installed the official HTC package, but the device doesn't show up when I use 'adb devices', so I can't sideload anything (phone was connected to a USB 2.0 port on the rear panel). I tried the same thing on my MacBook Retina with Windows 7 on Bootcamp, same problem. I read there might be problems with USB3 but my MacBook doesn't have USB2 ports any more. I havent tried getting into my phone in OSX or Linux yet since I couldn't find a decent guide, I only know a few basics with the Unix terminal.
Can anyone give me any tip how to get my phone to work again? I also have a USB OTG Adapter, maybe that helps?
Click to expand...
Click to collapse
adb doesn't work in the bootloader .. never has
Post results of fastboot getvar all minus you SN and IMEI
Download TWRP 2.6.3.3 > http://techerrata.com/browse/twrp2/m7
flash it (unless you have a sprint or Verizon phone Then STOP)
fastboot flash recovery openrecovery-twrp-2.6.3.3-m7.img
fastboot erase cache
fastboot reboot-bootloader
your bootloop should be gone now boot to recovery and adb should work fine again

[Q] My phone halfway bricked. Cannot boot and recovery.

I have tried to flash a rom (Android Revolution HD 53.0) for my One. And after I finished flashing, it asked me if I would like to fix root. I pressed yes.
Then the phone go stuck between the boot screen and the recovery screen. It cannot enter the recovery mode (It got a flash of the clockworkmod, but it seems likes some error occurs). And now, I put my phone into Fastboot mode and plug it to my computer. The phone has turned "FASTBOOT USB" but when a use a fastboot command, it says "waiting for device" for a century...
And when my open up the "device manager" on my computer, it can recongnize "my HTC" but it's marked as an unrecongnized device.
I'm using Windows 8.1 on the Lenovo y510p, I think the Win 8.1 is the problem causing this...
I have tried to install the Intel USB 3.0 eXtensible Host Controller Driver as mentioned here, but my USB then goes out of function.
Also, the fastboot won't work even though I manually install the HTC Driver from the device manager.
I have got HTC Sync, ADB and fastboot all installed on the computer. Still got no luck.
Anyway to solve this?
EricLamYP said:
I have tried to flash a rom (Android Revolution HD 53.0) for my One. And after I finished flashing, it asked me if I would like to fix root. I pressed yes.
Then the phone go stuck between the boot screen and the recovery screen. It cannot enter the recovery mode (It got a flash of the clockworkmod, but it seems likes some error occurs). And now, I put my phone into Fastboot mode and plug it to my computer. The phone has turned "FASTBOOT USB" but when a use a fastboot command, it says "waiting for device" for a century...
And when my open up the "device manager" on my computer, it can recongnize "my HTC" but it's marked as an unrecongnized device.
I'm using Windows 8.1 on the Lenovo y510p, I think the Win 8.1 is the problem causing this...
I have tried to install the Intel USB 3.0 eXtensible Host Controller Driver as mentioned here, but my USB then goes out of function.
Also, the fastboot won't work even though I manually install the HTC Driver from the device manager.
I have got HTC Sync, ADB and fastboot all installed on the computer. Still got no luck.
Anyway to solve this?
Click to expand...
Click to collapse
What is your bootloader version? What recovery are you using and what version?
in the meantime I suggest you to use Windows 7 or boot a live ubuntu 12.04 32 bits version cd or bootable flash drive and use fastboot from there.
EricLamYP said:
I have tried to flash a rom (Android Revolution HD 53.0) for my One. And after I finished flashing, it asked me if I would like to fix root. I pressed yes.
Then the phone go stuck between the boot screen and the recovery screen. It cannot enter the recovery mode (It got a flash of the clockworkmod, but it seems likes some error occurs). And now, I put my phone into Fastboot mode and plug it to my computer. The phone has turned "FASTBOOT USB" but when a use a fastboot command, it says "waiting for device" for a century...
And when my open up the "device manager" on my computer, it can recongnize "my HTC" but it's marked as an unrecongnized device.
I'm using Windows 8.1 on the Lenovo y510p, I think the Win 8.1 is the problem causing this...
I have tried to install the Intel USB 3.0 eXtensible Host Controller Driver as mentioned here, but my USB then goes out of function.
Also, the fastboot won't work even though I manually install the HTC Driver from the device manager.
I have got HTC Sync, ADB and fastboot all installed on the computer. Still got no luck.
Anyway to solve this?
Click to expand...
Click to collapse
This fixed fastboot on my windows 8.1 pc
Download this > http://forum.xda-developers.com/attachment.php?attachmentid=2500592&d=1389122072
Easy instructions here > http://forum.xda-developers.com/showthread.php?p=49131915
Use the Old Dirty Solution it works perfectly
clsA said:
This fixed fastboot on my windows 8.1 pc
Download this > http://forum.xda-developers.com/attachment.php?attachmentid=2500592&d=1389122072
Easy instructions here > http://forum.xda-developers.com/showthread.php?p=49131915
Use the Old Dirty Solution it works perfectly
Click to expand...
Click to collapse
so im bout to try this as my phone will not communicate in bootloader. but i have a bigger problem before i get to that. my phone wont stay charged long enough or at all really. i prob dont even have to mess with bootloader if it would charge. so i can plug it in and it flashes red led and empty battery. i can get it into bootloader and then recovery twrp 2.7.0.0 i currently have no os installed but have several on my phone so dont need to mess with adb yet how can i get my phone to stay on long enough to flash a rom ? RUU out of question here because of 30%
i thought twrp was suppose to charge ? but when i get their it wont stay on
alray said:
What is your bootloader version? What recovery are you using and what version?
in the meantime I suggest you to use Windows 7 or boot a live ubuntu 12.04 32 bits version cd or bootable flash drive and use fastboot from there.
Click to expand...
Click to collapse
Get no luck on that... The y510p cannot even boot from a USB /___\
But anyway, I have borrowed my fds computer with Win 7 installed. And all works fine now. Thank you very much~~
ac3kill said:
so im bout to try this as my phone will not communicate in bootloader. but i have a bigger problem before i get to that. my phone wont stay charged long enough or at all really. i prob dont even have to mess with bootloader if it would charge. so i can plug it in and it flashes red led and empty battery. i can get it into bootloader and then recovery twrp 2.7.0.0 i currently have no os installed but have several on my phone so dont need to mess with adb yet how can i get my phone to stay on long enough to flash a rom ? RUU out of question here because of 30%
i thought twrp was suppose to charge ? but when i get their it wont stay on
Click to expand...
Click to collapse
Your Phone is broken send it to HTC or take it to a repair shop

soft bricked m7, computer wont recognize phone

I have adb fastboot on but I Cant get anything working. have tried reinstalling drivers but still nothing. NEED HELP
Autiger11 said:
I have adb fastboot on but I Cant get anything working. have tried reinstalling drivers but still nothing. NEED HELP
Click to expand...
Click to collapse
What is your bootloader (hboot) version?
What is your computer OS version?
What are your drivers version?
What adb version are you using?
Make sure you have everything up to date and you should be able to have fastboot connectivity when booted in bootloader / fastboot usb mode. If you have hboot 1.44, you will need Windows 7, Linux or MacOS to use fastboot since its not working correctly with Windows 8/10 (not a problem with newer hboot versions).
Also make sure you are using the original usb cable and not only a usb power cable (without data connectivity). Only use usb 2.0 ports directly on your computer (no external hub). Make sure HTC Sync is NOT installed on your computer.

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