[Q] Help Strongly Advised ! - Streak 5 Q&A, Help & Troubleshooting

ERROR[D2]: wait ADB fastboot mode timeout!
Please check that device is exist and driver is properly installed.
Download Fail! - 2011/02/22 12:05:16
i dont understand why i am i keep getting this message in the qdl tool?
can some one guide me to the right steps?

theskipshow said:
ERROR[D2]: wait ADB fastboot mode timeout!
Please check that device is exist and driver is properly installed.
Download Fail! - 2011/02/22 12:05:16
i dont understand why i am i keep getting this message in the qdl tool?
can some one guide me to the right steps?
Click to expand...
Click to collapse
Its simple, it says it right there. PLEASE CHECK THAT THE DEVICE ITS EXIST AND DRIVER IS PROPERLY INSTALLED. make user you have the dell drivers installed.

theskipshow said:
ERROR[D2]: wait ADB fastboot mode timeout!
Please check that device is exist and driver is properly installed.
Download Fail! - 2011/02/22 12:05:16
i dont understand why i am i keep getting this message in the qdl tool?
can some one guide me to the right steps?
Click to expand...
Click to collapse
I had this same problem... your version of windows (probably xp) is not remembering the adb drivers. Go to here ---- > ftp://ftp.dell.com/Handheld/R288920.exe and download the adb drivers. Then Go into device manager on your computer and reload your adb drivers manually. If you encounter that error during the qdl tool process, windows will show an error in device manager under adb device... just click on this and reload your drivers again by manually searching for the adb drivers on your computer. Most of the time you can let windows search and it will find them too. After that, power down your device, hold down the volume up button and plug in your streak. it should read a com port and then you will be good to go. Thanks

Related

help am I an idiot part 2

I spent the whole of yesterday trying to add MoDaCo custom rom. from this post http://forum.xda-developers.com/showthread.php?t=552591 The first of my problems was that I couldn't get the right driver which now seems to be fixed now comes up as - ADB Interface -HTC Bootloader.
So this now means that when i go to fastboot I can load cyanogenMod (system recovery) by typing fastboot boot cm-hero-recovery.img
However none of these commands below in the CMD work. All i get is error: device not found
adb shell reboot bootloader (wait for device to reboot into bootloader)
fastboot boot cm-hero-recovery.img
adb shell mount /sdcard
adb push cm-hero-recovery.img /sdcard/cm-hero-recovery.img
adb shell flash_image recovery /sdcard/cm-hero-recovery.img
Any ideas please
robboy said:
I spent the whole of yesterday trying to add MoDaCo custom rom. from this post http://forum.xda-developers.com/showthread.php?t=552591 The first of my problems was that I couldn't get the right driver which now seems to be fixed now comes up as - ADB Interface -HTC Bootloader.
So this now means that when i go to fastboot I can load cyanogenMod (system recovery) by typing fastboot boot cm-hero-recovery.img
However none of these commands below in the CMD work. All i get is error: device not found
adb shell reboot bootloader (wait for device to reboot into bootloader)
fastboot boot cm-hero-recovery.img
adb shell mount /sdcard
adb push cm-hero-recovery.img /sdcard/cm-hero-recovery.img
adb shell flash_image recovery /sdcard/cm-hero-recovery.img
Any ideas please
Click to expand...
Click to collapse
Still sounds like a driver issue.. have you installed HTC + the SDK?
Restert ur handset into bootloader, hold power + back, then plugin the USB cable.. "FASTBOOT" (,In the red square) shoud change to FASTBOOT USB..
Skip the "adb shell reboot bootloader" and go straight to the next line and boot the recovery image via fastboot
should be plain sailing from there
It does change to fastboot usb on red. The only thing I can think of is do you have to install the sdk as I couldn't see a setup app. I just have all the files on the c dive. Will try skipping the first step when I get home
you dont install the sdk, just unzip it
thats right just the unzip, sorry, the drivers come with the SDK, if you still have no sucsess, do a Controll pannel > system >device manager then scan for device changes, if it finds the device select to install drivers and point it to the SDK folder
jackdaniels_lee said:
Still sounds like a driver issue.. have you installed HTC + the SDK?
Restert ur handset into bootloader, hold power + back, then plugin the USB cable.. "FASTBOOT" (,In the red square) shoud change to FASTBOOT USB..
Skip the "adb shell reboot bootloader" and go straight to the next line and boot the recovery image via fastboot
should be plain sailing from there
Click to expand...
Click to collapse
Grrrr still no joy. Just device not found. Im deleting all files that I have downloaded for drivers sdk etc and try and start again from scratch.
Do I need to partion my SD card before I do this as i have been having probs with that as well.
jackdaniels_lee said:
thats right just the unzip, sorry, the drivers come with the SDK, if you still have no sucsess, do a Controll pannel > system >device manager then scan for device changes, if it finds the device select to install drivers and point it to the SDK folder
Click to expand...
Click to collapse
Done that as well. If My device runs fastboot this should mean the drivers are correct.
robboy said:
Done that as well. If My device runs fastboot this should mean the drivers are correct.
Click to expand...
Click to collapse
yes if u succeed to enter fastboot, it means it had recognised the phone? are u using windows 7 by the way? cause u have to download the precise drivers for the OS u r using whether x64, win 7 ....
I seem to remember having problems with this until I enabled the USB debugging mode in the options somewhere.
As for drivers, I'm running Windows 7 x64 and the x64 Vista drivers did the job fine.

[Q] Can't connect in fastboot

In command prompt, I typed "fastboot -i 0x0fce getvar version"
And, it stays at <waiting for device>
I'd like to point out that I succeeded at flashing custom ROM last time, but now, it won't connect in fastmode.
I've installed the SDK (obviously)
Added the .inf file from SE site
Installed drivers from Flashtool folder
LED goes blue when connecting.
I've tried different ports, different OS, different PC altogether, but everything ends up with <waiting for device>.
Is the problem on the phone? How can I fix it?
Drivers seem to be fine...
Does your phone really go into fastboot? Blue LED stays on, nothing on the screen. If yes, check drivers once again! Does Windows detect the device?
Someguyfromhell said:
Drivers seem to be fine...
Does your phone really go into fastboot? Blue LED stays on, nothing on the screen. If yes, check drivers once again! Does Windows detect the device?
Click to expand...
Click to collapse
Yes, the LED is blue, the screen is off.
Windows does make sound when connecting, and it doesn't pop up "new device" wizard.
Hey! Just noticed something.
When uninstall the drivers connect the device, Device Manager says "S1boot fastboot" briefly before going into "SEMC Flash Device"
How can I disable it from going to SEMC Flash Device?
And it happens only when I have drivers uninstalled. Seems they install once I connect the phone. Tried again without uninstalling drivers, and it goes straight to "Flash device"
Then maybe wrong drivers installed?
Someguyfromhell said:
Then maybe wrong drivers installed?
Click to expand...
Click to collapse
Maybe:
I've reinstalled the SDK - didn't work
Added .inf file from SE site - didn't work
Installed Flashtool drivers - didn't work
But now, I'm waiting for Lollylost100 to reupload the drivers he once uploaded on Megaupload - I think those ones worked last time (hopefully)
I'll install Debian and try again with new OS, with no installed drivers or whatever...
USB debuging is on?
Just wait a few seconds after connecting you phone in fastboot mode, sometimes computer takes time process.
Theonewithideas said:
In command prompt, I typed "fastboot -i 0x0fce getvar version"
And, it stays at <waiting for device>
I'd like to point out that I succeeded at flashing custom ROM last time, but now, it won't connect in fastmode.
I've installed the SDK (obviously)
Added the .inf file from SE site
Installed drivers from Flashtool folder
LED goes blue when connecting.
I've tried different ports, different OS, different PC altogether, but everything ends up with <waiting for device>.
Is the problem on the phone? How can I fix it?
Click to expand...
Click to collapse
2 things can be resone for this.first one is u didn't installed your adb drivers well.so it can be easyly fixed if u use xperia mini pro.just download drivers from the link below and unzip it.connect your device on fastboot mode and use device manager to ree update your drivers.when update your drivers,point drivers location to. Unziped fastboot drivers folder.make sure u have pointed x86 or x64 folder inside drivers folder.(x86 for 32bit os,x64 for 64bit os).check the problem is fixed.if not problem depends on second resone.it is u do not have correct fastboot program.(I have personal experience on this).just check the fastboot.zip folder for your device on internet and download it.(this is littlebit difficult but u can)when u download it just ree update your drivers using its drivers folder.when u use command prompt make sure u have opened correct folder from command prompt which contains fastboot.exe.(open fastboot folder write click while holding shift key and click on open command prompt window)then try using it.problem must be fixed.
https://www.dropbox.com/s/x57ebyha7r65o27/fastboot.rar
Dont forget to thanx if this helpfull...
xbox360k550 said:
USB debuging is on?
Click to expand...
Click to collapse
Yes.
hsrbnr said:
Just wait a few seconds after connecting you phone in fastboot mode, sometimes computer takes time process.
Click to expand...
Click to collapse
Tried that, left phone on fastboot for a few minutes while looking for solution. No difference.
Lasanda said:
2 things can be resone for this.first one is u didn't installed your adb drivers well.so it can be easyly fixed if u use xperia mini pro.just download drivers from the link below and unzip it.connect your device on fastboot mode and use device manager to ree update your drivers.when update your drivers,point drivers location to. Unziped fastboot drivers folder.make sure u have pointed x86 or x64 folder inside drivers folder.(x86 for 32bit os,x64 for 64bit os).check the problem is fixed.if not problem depends on second resone.it is u do not have correct fastboot program.(I have personal experience on this).just check the fastboot.zip folder for your device on internet and download it.(this is littlebit difficult but u can)when u download it just ree update your drivers using its drivers folder.when u use command prompt make sure u have opened correct folder from command prompt which contains fastboot.exe.(open fastboot folder write click while holding shift key and click on open command prompt window)then try using it.problem must be fixed.
https://www.dropbox.com/s/x57ebyha7r65o27/fastboot.rar
Dont forget to thanx if this helpfull...
Click to expand...
Click to collapse
Okay, I will try this and post the results.
Actually, will this work with Mini?
Theonewithideas said:
Yes.
Tried that, left phone on fastboot for a few minutes while looking for solution. No difference.
Okay, I will try this and post the results.
Actually, will this work with Mini?
Click to expand...
Click to collapse
I think it also works with mini as well.just try it.
Installed everything again, on Ubuntu. I've reached the Windows checkpoint: it again says "<waiting for device>".
Could this be a phone-related error?
Theonewithideas said:
Installed everything again, on Ubuntu. I've reached the Windows checkpoint: it again says "<waiting for device>".
Could this be a phone-related error?
Click to expand...
Click to collapse
try my method in windows pc.it dont works in ubuntu.it seems,there is no problem in your device.it may be there is some thing missing what you want.try my method back with windows pc and post clearly the resault with steps.if something wrong.i will help you.don't worry....
Windows drivers do not work on Ubuntu, the same vice-versa also.
Lasanda said:
2 things can be resone for this.first one is u didn't installed your adb drivers well.so it can be easyly fixed if u use xperia mini pro.just download drivers from the link below and unzip it.connect your device on fastboot mode and use device manager to ree update your drivers.when update your drivers,point drivers location to. Unziped fastboot drivers folder.make sure u have pointed x86 or x64 folder inside drivers folder.(x86 for 32bit os,x64 for 64bit os).check the problem is fixed.if not problem depends on second resone.it is u do not have correct fastboot program.(I have personal experience on this).just check the fastboot.zip folder for your device on internet and download it.(this is littlebit difficult but u can)when u download it just ree update your drivers using its drivers folder.when u use command prompt make sure u have opened correct folder from command prompt which contains fastboot.exe.(open fastboot folder write click while holding shift key and click on open command prompt window)then try using it.problem must be fixed.
https://www.dropbox.com/s/x57ebyha7r65o27/fastboot.rar
Dont forget to thanx if this helpfull...
Click to expand...
Click to collapse
Okay, if you say so:
first one is u didn't installed your adb drivers well.so it can be easyly fixed if u use xperia mini pro.just download drivers from the link below and unzip it.connect your device on fastboot mode and use device manager to ree update your drivers.when update your drivers,point drivers location to. Unziped fastboot drivers folder.make sure u have pointed x86 or x64 folder inside drivers folder.(x86 for 32bit os,x64 for 64bit os).check the problem is fixed...
This didn't work, it's SEMC Flash Device again, and fastboot doesn't work.
.if not problem depends on second resone.it is u do not have correct fastboot program.(I have personal experience on this).just check the fastboot.zip folder for your device on internet and download it.(this is littlebit difficult but u can)when u download it just ree update your drivers using its drivers folder...
Can't find the drivers. It will not help, every fastboot folder is the same.
.when u use command prompt make sure u have opened correct folder from command prompt which contains fastboot.exe.(open fastboot folder write click while holding shift key and click on open command prompt window)then try using it.problem must be fixed.
... or, you can just type "cd" and then location to fastboot.
Theonewithideas said:
Okay, if you say so:
first one is u didn't installed your adb drivers well.so it can be easyly fixed if u use xperia mini pro.just download drivers from the link below and unzip it.connect your device on fastboot mode and use device manager to ree update your drivers.when update your drivers,point drivers location to. Unziped fastboot drivers folder.make sure u have pointed x86 or x64 folder inside drivers folder.(x86 for 32bit os,x64 for 64bit os).check the problem is fixed...
This didn't work, it's SEMC Flash Device again, and fastboot doesn't work.
.if not problem depends on second resone.it is u do not have correct fastboot program.(I have personal experience on this).just check the fastboot.zip folder for your device on internet and download it.(this is littlebit difficult but u can)when u download it just ree update your drivers using its drivers folder...
Can't find the drivers. It will not help, every fastboot folder is the same.
.when u use command prompt make sure u have opened correct folder from command prompt which contains fastboot.exe.(open fastboot folder write click while holding shift key and click on open command prompt window)then try using it.problem must be fixed.
... or, you can just type "cd" and then location to fastboot.
Click to expand...
Click to collapse
ok.i got that.another thing i need to know is when u do first step is that the device manager recognized your device,if does,is it updates your device drivers when u point the drivers location to x64 or x86?(when u do that it must show android adb interface drivers installed, when u check device manager)which version of windows u used to do those steps? and tell me your device name and model.i will upload a correct fastboot program for u.just keep your hopes alive....
EDIT
Theonewithideas said:
When uninstall the drivers connect the device, Device Manager says "S1boot fastboot" briefly before going into "SEMC Flash Device"
Click to expand...
Click to collapse
just have to mention u one thing..now i read this post u quoted before.it seems there is no any problem in your device.when u uninstall drivers u says this "S1boot fastboot" shows on your device manager it meens your device works well.S1boot fastboot meen device fastboot hardware it exactly not installed yet.u need to update drivers of this "S1boot fastboot" as my methods first step.just send me the progress and answers for my questions thats all.i will send a fix.
Can't connect in fastboot mode
Hi!
I want to unlock the bootloader of my Xperia Arc S (Lt18i) but i can't connect my phone in fastboot mode. When i connect the cable to PC, the LED flashes blue, but just for a few seconds and turns red. The message that appears in command prompt is "waiting for device". I tried so several solutions but no one worked.
Could you help me?
Thanks.
---------- Post added at 11:37 PM ---------- Previous post was at 11:11 PM ----------
Gioo25 said:
Hi!
I want to unlock the bootloader of my Xperia Arc S (Lt18i) but i can't connect my phone in fastboot mode. When i connect the cable to PC, the LED flashes blue, but just for a few seconds and turns red. The message that appears in command prompt is "waiting for device". I tried so several solutions but no one worked.
Could you help me?
Thanks.
Click to expand...
Click to collapse
Sorry for my last post. When searching in some forums, I discovered that I can not unlock the bootloader. It seems that is a definition of the system.
Thank You And sorry. :crying:
Go to Service Mode to see if it can be unlock.
brixe said:
Go to Service Mode to see if it can be unlock.
Click to expand...
Click to collapse
Thank you! I've done that and the result is this: "bootloader unlock allowed: NO".
SAme Same
Theonewithideas said:
Yes.
Tried that, left phone on fastboot for a few minutes while looking for solution. No difference.
Okay, I will try this and post the results.
Actually, will this work with Mini?
Click to expand...
Click to collapse
Having the same problem with my SE LWW.

[SOLVED] adb list of devices attached

Hi I am trying to flash elitekernel from bootloader fastboot but adb is keep saying that "device not found" when I tried to enter adb devices but he said "list of devices attached", I tried adb kill-server and adb start-server I tried disconnect and connect my device from USB, but nothing helped. Can someone help me what am I doing wrong ?
Thermaltake868 said:
Hi I am trying to flash elitekernel from bootloader fastboot but adb is keep saying that "device not found" when I tried to enter adb devices but he said "list of devices attached", I tried adb kill-server and adb start-server I tried disconnect and connect my device from USB, but nothing helped. Can someone help me what am I doing wrong ?
Click to expand...
Click to collapse
The device never gets recognized so easily on "adb" whereas in fastboot u would not have any issues.....
since u r going to flash the kernel try "fastboot devices" u ll be able to see ur device
The adb issue will be solved by restarting the PC or by trying to re-install the HTC drivers
[email protected] said:
The device never gets recognized so easily on "adb" whereas in fastboot u would not have any issues.....
since u r going to flash the kernel try "fastboot devices" u ll be able to see ur device
The adb issue will be solved by restarting the PC or by trying to re-install the HTC drivers
Click to expand...
Click to collapse
I tried fastboot devices and enter but it's just blank nothing
I tried restart PC didn't help, I tried to restart the phone too, and reinstalling drivers nothing.
Even WinDroid HTC One X+ Toolkit won't recognized him when he is in fastboot, but when he is in windows he said Online on status. I really have no idea where did I go wrong I usually always get him into fastboot flash normal.
Thermaltake868 said:
I tried fastboot devices and enter but it's just blank nothing
I tried restart PC didn't help, I tried to restart the phone too, and reinstalling drivers nothing.
Even WinDroid HTC One X+ Toolkit won't recognized him when he is in fastboot, but when he is in windows he said Online on status. I really have no idea where did I go wrong I usually always get him into fastboot flash normal.
Click to expand...
Click to collapse
I always had the device shown as BLANK on "adb" when using windows
whereas on fastboot I never had that issue.....
can u try this
In windows install this MInimal ADB and Fastboot give a try on"fastboot devices" using this
if not working re install the drivers and try the MInimal ADB and Fastboot again
I am suggesting this because it had worked flawlessly for me with proper drivers and MInimal ADB and Fastboot.......
I never had to install drivers I just installed some adb universal drivers from WinDroid HTC One X+ Toolkit 3.0 it always worked without installing any other drivers, but all of the sudden it's not. I tried now using that MInimal ADB still blank, I will try now to reinstall or uninstall completely that adb universal drivers, and try again.
Thermaltake868 said:
I never had to install drivers I just installed some adb universal drivers from WinDroid HTC One X+ Toolkit 3.0 it always worked without installing any other drivers, but all of the sudden it's not. I tried now using that MInimal ADB still blank, I will try now to reinstall or uninstall completely that adb universal drivers, and try again.
Click to expand...
Click to collapse
Dude try this USB drivers if nothing works
[email protected] said:
Dude try this USB drivers if nothing works
Click to expand...
Click to collapse
Installation won't start on this one that you gave me. I run it but nothing happends.
P.S
I download AdbDriverInstaller he said that I already have installed adb drivers, don't know how when I uninstall it all.
EDIT:
I manage to get device ID on adb devices in windows, but when I enter bootloader in fastboot he can't recognized him on command "fastboot devices" he said "device not found", and I can't flash kernel becouse he needs to be in fastboot.
Thermaltake868 said:
Installation won't start on this one that you gave me. I run it but nothing happends.
P.S
I download AdbDriverInstaller he said that I already have installed adb drivers, don't know how when I uninstall it all.
Click to expand...
Click to collapse
Weird I just installed this and Minimal ADB on my PC and checked....
all good here can see the Device on the adb and fastboot..
try again as administrator or something...might help not sure
I was thinking all the time that I'm doing something wrong, but every time I did it before it went well, but now I have no idea whats happening, why he won't recognized phone in fastboot, it said fastboot usb, and when I connect him he is always "waiting for device" or "device not found"
Thermaltake868 said:
I was thinking all the time that I'm doing something wrong, but every time I did it before it went well, but now I have no idea whats happening, why he won't recognized phone in fastboot, it said fastboot usb, and when I connect him he is always "waiting for device" or "device not found"
Click to expand...
Click to collapse
thats sad......but it happens
can u confirm using which u r trying to get the phone on fastboot....android sdk kit or Minimal ADB
and can u see these files in the fastboot folder
ADBWinApi.dll ADB link library for Windows
ADBWinUsbApi.dll ADB link library for Windows
please confirm this....
[email protected] said:
thats sad......but it happens
can u confirm using which u r trying to get the phone on fastboot....android sdk kit or Minimal ADB
and can u see these files in the fastboot folder
ADBWinApi.dll ADB link library for Windows
ADBWinUsbApi.dll ADB link library for Windows
please confirm this....
Click to expand...
Click to collapse
I am using minimal adb that you gave me, and yes both files are in the folder.
Thermaltake868 said:
I am using minimal adb that you gave me, and yes both files are in the folder.
Click to expand...
Click to collapse
are u still not able to install this driver I gave the link for....
I would try by uninstalling all the installed drivers and install only the above mentioned driver.....Give a try :good:
[email protected] said:
are u still not able to install this driver I gave the link for....
I would try by uninstalling all the installed drivers and install only the above mentioned driver.....Give a try :good:
Click to expand...
Click to collapse
I did that too now, and in windows I get adb devices he show me number of my device, my friend told me now that I can flash kernel when I am in OS that I don't have to be in fastboot he will enter fastboot on his own, and I try that too, and as I told he manage to find device via adb, but when he enter bootloader in fastboot he is waiting for device in kernel cmd windows he can't find him.
Make sure your using a USB port that connects directly to your mobo. adb/fastboot is dodgy with USB hubs. Try a port at the back of your PC.
Sent from my HTC One X+ using Tapatalk
I fixed it I had old drivers for USB I installed new from intel chipset did the setup.exe -overall in cmd after that I uninstall htc drivers that I installed before remove them completly restart PC after that install latest HTC Sync connect the phone run the .bat from kernel, and it went successfully.
Thanks for all the help guys
Adb is showing list of devices attached..what is the solution for this..if any one knows how to solve this problem can u help me??
@Vinay23
On the device I'm using, this was under "Default USB Configuration" - advice from others appears to be that selecting PTP is the way to go.
For me, it works =).
Hope that might help out.
I found it here:
“adb devices” returns empty “List of devices attached” on Ubuntu
Based on react native documentation (https://facebook.github.io/react-native/docs/running-on-device) I wanted to connect to ADB in my ubuntu vm (Ubuntu 18.04.2 LTS) but my problem is that i keep ge...
stackoverflow.com

Xperia XA Ultra fast boot waiting for device?

So my device is recognized when it's turned on but then I go to command prompt and click ADB reboot bootloader (enter). It just says waiting for device. If it's on and I click ADB devices in the command prompt it tells me the serial number and then says device. On the computer management it is recognized as a device it says the name Xperia XA Ultra. I tried to update the Google driver into ADB but that was a failed attempt. I couldn't quite understand what I was supposed to do there or really even follow the instructions because it kept telling me that I was unable to update drivers after I followed the instructions they gave me. I just kept getting an error message. So I'm wondering how do I solve this problem? I really would like to unlock my bootloader and I'm not even sure if it's going into fastboot. I got the notification after turning off the phone hold Volume Plus and plug it in it said of my computer that it was installing the fastboot drivers. I'm assuming it was in fastboot at that time even though I didn't get a blue light it just turned blue for a minute and then it was Green. It said it was installing fastboot drivers so I'm assuming it was in fastboot mode. This is a really tricky process I guess.
What windows do you have?
Also I would recommend you to Google how install fastboot on your Windows type.
Sent from my F3213 using xda premium
I have windows 10
Windows 10. Why would I need to install fastboot on Windows? Fastboot is on my Android device. I use ADB. Android debugging bridge is the bridge that goes between your operating system and fastboot the bootloader and Android and all of that in order to be able to communicate with the phone. Why would I need to install Fastboot on my windows? You sound like a customer service representative. I can't even talk to them anymore because they tried to get me to act like Chris Farley.
If you don't install fastboot on your computer you can't unlock bootloader you can't install custom recovery or root the phone!
Sent from my F3213 using xda premium
Hello,
Here is the link to the ADB Installer that contains all the files you need (ADB, Fastboot and Drivers). Download and following the screen information to install the program.
https://forum.xda-developers.com/showthread.php?t=2588979/
Thanks,
Danjuma
Hi there
please note that Windows 10 x64 blocks the installation of unsigned drivers. To be able to install them anyway you have to enter the Windows Test Mode. To do this you just have to run "bcdedit /set testsigning on" in an administrative command line and restart your computer afterwards. You'll see "Test Mode" at the bottom right corner of your desktop. To leave the testmode use "bcdedit /set testsigning off" and restart again.
Done all of this and it doesn't work...
You have to use drivers from Sony for Flashmode and use drivers included in Flashtool (C:\flashtool\drivers) for fastboot and ADB. No problem for me with Windows 10 64bits and don't need to use Test mode.

Fastboot help

My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode. I get a blank space in return. Can anyone help me with this? ADB works fine, it's only Fastboot. Is there a Fastboot driver that I might be missing?
Thank you.
Edit: I'm trying to unlock the bootloader of my phone.
Me too !
Drivers are here: https://developer.android.com/studio/run/win-usb
These are the ones I use for ADB/Fastboot.
May I ask if anybody solved this already?
Having the same issue, tried various drivers, but fastboot won't find my phone
Help is highly apperciated!
Clock
If you using windows 10 have you disable the drivers signature verification.. And search on here (XDA) for Min ADB & Fastboot tools, easier than using SDK tools unless you modding apks ect..
Okay, I got this working.
When in fastboot mode, you have to go to the device manager, update driver, and manually choose the google fastboot driver. Then the ! is gone and it works.
Fastboot drivers for Xperia XZ1
Redcalibur said:
My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode.
Click to expand...
Click to collapse
I add a hint to the solution that is working for me (Windows 7, 64 bit): https://forum.xda-developers.com/showpost.php?p=79221714&postcount=44
Redcalibur said:
My PC doesn't detect my phone when I use Fastboot Devices when my phone is on Fastboot mode. I get a blank space in return. Can anyone help me with this? ADB works fine, it's only Fastboot. Is there a Fastboot driver that I might be missing?
Thank you.
Edit: I'm trying to unlock the bootloader of my phone.
when u connect phone to pc choose no data transfer then open cmd and write: adb reboot fastboot
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