Develop Bugs

Trying to unlock the bootloader

I get through all the steps, adb setup recognizes my device is connected. When i try to unlock the bootloader <fastboot oem unlock> command line locks up at <waiting for device>.
can someone advise?
Verizon if that matters

What happens when you type in "fastboot devices"

Nothing happens. Tried it both before and after typing in adb reboot bootloader

You sure your pc is detecting the phone when it is in fastboot mode? To me it seems like your computer isn't detecting the phone or the drivers didn't get installed properly.

<deleted>
answered my own question

I had the same issue. Assuming you're using Windows, you need to find where the latest Samsung drivers for the GN were copied to when you installed them (you have installed them, right?) The next time you plug in your phone, it will probably ask you to setup a new device. Tell it you will install the drivers from a location you choose, navigate to the folder where the drivers are, let it install them, restart if it asks, and then try the process over.
FWIW, I used the directions and links from this tutorial and eventually got it working. They include alternate drivers here in case the one from samsung.com doesn't work.

im having the SAME PROBLEM AND HAVE TRIED TWO DIFFERENT COMPUTERS.TRING ADB METHOD

What's the ADB method? Why don't you just just hold the volume up, volume down and power to get into fastboot mode? When you plug it in, windows should see a new device that needs drivers. You need to make sure the drivers are installed before fastboot will work.

i am in fastboot "little android with chest opened". and i do have the driver installed but in fastboot windows thinks its a different device

robitron929 said:
i am in fastboot "little android with chest opened". and i do have the driver installed but in fastboot windows thinks its a different device
Click to expand...
Click to collapse
Is it saying that it couldn't install the drivers for Android 1.0 or something like that? What step are you at? Which tutorial are you using?
Read the driver installation part of this tutorial.
http://forum.xda-developers.com/showthread.php?t=1392310

i got it. it was this
TO GET DRIVER WORKING IN BOOTLOADER YOU MIGHT HAVE TO DO THIS, THIS TOOK ME FOREVER TO FIND!!!!!!!!!!!
I TAKE NO CREDIT!
READ CAREFULLY
THANKS TO KELLEX FROM DROIDLIFE
Tips:
-We know that many of you are running into a “waiting for device” issue when apply the fastboot oem unlock command. This is a driver issue and one that a reader has a suggestion for:
1. Open device manager on your PC.
2. Right click on Android 1.0 with the yellow ! mark on it.
3. Choose update driver.
4. Choose browse my computer.
5. Choose Let me pick from a list.
6. Scroll down and find the Samsung driver with newest date. Should be the driver you downloaded above. (Possibly dated 11/25/2011 ).
7. It will give you a warning about installing the driver, just click yes.

[Q] Phone not being recognized by computer in bootloader?

So I've been trying to root/unlock my CDMA nexus and I'm having a very frustrating problem that's preventing me from doing it with any of the toolkits available OR the manual method. I have the android SDK installed, samsung's USB drivers, and everything else I've been told to get. I can detect my phone when it's connected (and USB debugging is on) using adb commands but ONLY when the phone is booted as normal. If I reboot into the bootloader, my computer no longer detects it, and I can no longer act upon it via adb. This, of course, is preventing me from getting anywhere on the unlocking/root front. Anyone have any ideas? I'm fresh out.

ADB doesn't work in boot loader/fastboot. Adb only works in recovery or when Android is fully running.
You need to use fastboot commands in bootloader/fastboot.
"Fastboot devices" to see if it's detected.
Sent from my Galaxy Nexus

have you installed the hboot drivers?

As above, you have to use fastboot commands when the phone is in bootloader. Try "Fastboot devices" to see if your computer sees the phone.

Fastboot commands don't detect the phone either. Fastboot is installed, as I can get it via command prompt to show available commands and whatnot, it just does not detect a device to work on.

I am also having this exact problem when i try to install the new touch cwm beta that was just released. Its not detecting the device while in the bootloader, and when i try to fastboot flash recovery it just says <waiting for device> and does nothing.

I know this is a little late, but I figured I’d post here to help anyone else out that is having this problem. I was trying to update my Galaxy Nexus from 4.0.2 to 4.0.4 using fastboot when I ran into the problem you’re having. I did this from a Windows 7 machine, and the fix for me was as follows:
1. After booting into the bootloader and having your phone plugged into your computer, open Computer Management.
2. Under Device Manager, in Computer Management, you should see a listing for a device called “Android 1.0” and it’ll have the little yellow triangle with the exclamation point on it.
3. Right click on the Android 1.0 device and select “Update Driver Software…”
4. Click “Browse my computer for driver software”
5. Click “Let me pick from a list of device drivers on my computer”
6. If you installed the Samsung drivers for the phone, scroll down until you see a device listed as “SAMSUNG Android Phone”
7. Select it and click next
8. It should auto populate the driver information. Click next and it will install the device
9. Go back to your CMD prompt and fastboot devices should now list the phone.
Hope this helps!

Quicks man your the best!

...or use Linux #trolling
Sent from my Galaxy Nexus using xda app-developers app

[Q] Can Not get ADB and Fastboot drivers to install

Windows 7 x64
Galaxy Nexus i515, BROKEN SCREEN, USB DEBUGGING WAS NOT TURNED ON. The phone is completely stock I just turned it on and used it until I broke my screen. Screen lock is on.
I have been trying to access my phone, using Fastboot, to wipe it before I send it in for warranty. I can not seem to do this at all. It seems that I can not install the drivers because I have not enabled USB debugging. Is this true? I have been following this guide : http://www.teamandroid.com/2012/07/30/how-to-set-up-adb-fastboot-with-android-sdk/2/ When i go to manually install the drivers, from SDK, I get, "The folder you specified does not contain a compatible software driver for your device. If the folder contains a driver, make sure that it is designed to work with Windows for x6-based systems." I then tried the driver from Samsung and got the same response.
So then I hold VOL+ _ VOL- and Power and tried to install the drivers for Fastboot with the same outcome as above. Also when I boot in Fastboot mode the drivers that are installed make my phone a modem. The driver is called, "SAMSUNG Mobile USB Modem." I can not get this to change.
So to summarize I can not get the ADB Drivers to install, because I do not have USB Debugging enabled, that in return will not allow me to install Fastboot Drivers because when I plug the phone in the computer sees it as a Modem.
Any suggestions? I am just trying to erase the info on my phone I have given up all hope of recovering any data.
Thanks,
qualm

USB debugging drivers/interface have nothing to do with fastboot drivers/interface. What's a screen lock?
a manta wrote this.

beekay201 said:
USB debugging drivers/interface have nothing to do with fastboot drivers/interface. What's a screen lock?
a manta wrote this.
Click to expand...
Click to collapse
I meant a screen pattern lock. When you wake up the screen you have to connect the dots in a certain pattern before your screen unlocks and you can use the phone.
As far as, USB debugging drivers/interface having nothing to do with fastboot drivers/interface, then what am I doing wrong? I can not get my computer to see my phone as an android device.

_qualm_ said:
I meant a screen pattern lock. When you wake up the screen you have to connect the dots in a certain pattern before your screen unlocks and you can use the phone.
As far as, USB debugging drivers/interface having nothing to do with fastboot drivers/interface, then what am I doing wrong? I can not get my computer to see my phone as an android device.
Click to expand...
Click to collapse
I know what a screen pattern lock is.
Uninstall all drivers, reboot pc.
Assuming device is off: press power+vol up+vol down, until you feel the vibration. Wait 2 secs or so. Device will be in fastboot mode.
Read this thread, i say again, READ this thread, obviously start with the first post! - http://forum.xda-developers.com/showthread.php?t=1812959

Thanks for the link. I read it and followed instructions for installing the drivers. Here is what I did:
1.Uninstalled all drivers
2.Rebooted my PC
3.Downloaded these Drivers, as suggested: http://forum.xda-developers.com/showthread.php?t=1379875
4.Followed these instructions, on how to install the driver without windows trying to find one automatically: http://forum.xda-developers.com/showpost.php?p=29044502&postcount=735
Everything seemed to go well under the Device Manager, when I plug my phone in in fastboot mode, it shows Android Phone -> Samsung Android Interface. This is way better than what I had before, when it was showing up as a Modem. Now when I try to use fastboot.exe and I type "fastboot devices" nothing shows up. I reset the computer and replugged in my device, in fastboot, and the same thing nothing shows up in fastboot.
Thanks for you help.

Did you miss the part about having to feed windows the same driver again, when connecting the device for the first time, in FASTBOOT MODE?
a maguro wrote this.

beekay201 said:
Did you miss the part about having to feed windows the same driver again, when connecting the device for the first time, in FASTBOOT MODE?
a maguro wrote this.
Click to expand...
Click to collapse
Not sure if I understand what your asking.
I followed all of the steps here: http://forum.xda-developers.com/showpost.php?p=29044502&postcount=735 I connected the phone booted normally and let windows find a driver so that the driver reads Portable Devices -> Galaxy Nexus. Then I unplugged the Nexus and booted it in fastboot mode and plugged it in. Next I followed the directions to install the Universal_Naked_Driver, in fastboot mode. I can not install the driver for ADB because I can not enable USB Debugging with my broken screen.
Thanks Again.

Why is it so difficult for people to understand that USB debugging has nothing to do with anything outside the booted OS?
Sent from my Galaxy Nexus

W8 a sec, do you even have your bootloader unlocked???
You said you're running stock, so that should have been my first question, because to unlock your bootloader through the usual way, you need to confirm a dialog on the device... which in your case, doesn't have a working screen.
_qualm_ said:
Not sure if I understand what your asking.
I followed all of the steps here: http://forum.xda-developers.com/showpost.php?p=29044502&postcount=735 I connected the phone booted normally and let windows find a driver so that the driver reads Portable Devices -> Galaxy Nexus. Then I unplugged the Nexus and booted it in fastboot mode and plugged it in. Next I followed the directions to install the Universal_Naked_Driver, in fastboot mode. I can not install the driver for ADB because I can not enable USB Debugging with my broken screen.
Thanks Again.
Click to expand...
Click to collapse
....
Lets see:
That post shows how it's done, correctly. (I think, from what i've read)
pay attention to part 3)
3)
NOTE:
- The method described here can be used to install the "Samsung Galaxy Nexus ADB Interface" driver as well as the "Samsung Galaxy Nexus Bootloader Interface" driver.
- Differences between the two procedures. One is done with the phone booted up normally and "USB Debugging" is enabled, and the other is done when the phone is in fastboot. I will cover the "USB Debugging" part here.
Click to expand...
Click to collapse
then...
We will now install the two drivers that efrant talked about in his post.
A) (FOR ADB - WHEN RUNNING ANDROID OS):
Enable USB debugging on your device
- Goto Settings > Developer Options > Check "USB Debugging"
- Connect device, manually update driver to Naked driver by 1wayjohny, done. On 4.2 and above, you'll need to confirm that you accept the host's (your pc) RSA key.
B) (FOR FASTBOOT - WHEN RUNNING FASTBOOT MODE)
boot into fastboot mode - power off phone and hold vol up + vol down + power
Click to expand...
Click to collapse
Both for A) and B), you need to do the "Update drivers manually" part!
Right now, your only option is B), that is to use fastboot to either:
- Flash stock images.
- To get your data back, boot a custom recovery (which won't require the RSA key confirmation for ADB) from fastboot, then use ADB to pull your /sdcard/ or whatever.

Pirateghost said:
Why is it so difficult for people to understand that USB debugging has nothing to do with anything outside the booted OS?
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
I am learning this ^. I am having trouble getting my computer to see my phone, in fastboot mode. All of the instructions that I have read start with installing drivers for ADB, which requires the phone to be USB debugging mode, and then the drivers for fastboot. So I thought my trouble was, since I can not install the drivers for ADB, and that I was having trouble with all of my drivers, that it was probably the fact that my phone can not be put into USB debugging mode. I now realize that USB debugging has nothing to do with fastboot, as fastboot is before the OS is booted. I am still just having trouble with my fastboot driver and seeing my phone with fastboot.exe.

beekay201 said:
W8 a sec, do you even have your bootloader unlocked???
Both for A) and B), you need to do the "Update drivers manually" part!
Right now, your only option is B), that is to use fastboot to either:
- Flash stock images.
- To get your data back, boot a custom recovery (which won't require the RSA key confirmation for ADB) from fastboot, then use ADB to pull your /sdcard/ or whatever.
Click to expand...
Click to collapse
No my bootloader is not unlocked. Is this the reason that my phone is not detected by fastboot.exe? Do I need to unlock my bootloader?
I have been trying option B, as I know this is my only option. I have been doing the "Update drivers manually" part I even tried on another PC with windows 7, to no avail. What ever I seem to do I can not see my device in fastboot.exe.

_qualm_ said:
No my bootloader is not unlocked. Is this the reason that my phone is not detected by fastboot.exe? Do I need to unlock my bootloader?
I have been trying option B, as I know this is my only option. I have been doing the "Update drivers manually" part I even tried on another PC with windows 7, to no avail. What ever I seem to do I can not see my device in fastboot.exe.
Click to expand...
Click to collapse
No. Fastboot should be able to see your device if the proper drivers are installed. Fastboot is REQUIRED to unlock the bootloader
Sent from my Galaxy Nexus

Pirateghost said:
No. Fastboot should be able to see your device if the proper drivers are installed. Fastboot is REQUIRED to unlock the bootloader
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
If you used odin to flash something, that will unlock the bootloader. Flashing a section of edited param using OMAP flash will also unlock the bootloader.
Beamed from my Maguro.

I also have the same problem with my galaxy C5.
_qualm_ said:
No my bootloader is not unlocked. Is this the reason that my phone is not detected by fastboot.exe? Do I need to unlock my bootloader?
I have been trying option B, as I know this is my only option. I have been doing the "Update drivers manually" part I even tried on another PC with windows 7, to no avail. What ever I seem to do I can not see my device in fastboot.exe.
Click to expand...
Click to collapse
My galaxy C5 is also not recognized as a bootloader interface while in fastboot mode, after installing all the drivers correctly. Samsung usb driver v1.5.63.0 makes the changes i think, and it makes it as a modem instead of bootloader. maybe the solution is i have to manually update the driver of that modem into bootloader, right click on the modem in device manager and change it's driver into bootloader of your phone, maybe it works. I will try it this way.
Let me know if this solution has worked for someone.
Thanks

[HELP] MI a2 lite Fastboot Exits aAutomatically

I have a mi a2 lite and i want to unlock its bootloader, i have alrready enabled oem unlocking on developer options, when i boot my device in fastboot and connect to computer, command window says waiting for device and after 15-20 seconds of connecting my device to my pc, fastboot mode automatically exits and shows charging animation. Please anyone can help?
My device is in andoid pie (stable).

Check if you have installed drivers and run "fastboot devices" to see if device is recognised.

Agree something with your PC.
Phone will automatically exit fastboot if no connection in timely manner.
Check drivers are installed, reboot your PC.
Also be sure USB debugging is on in Dev option and trust PC.
For me, I generally boot Android normal. Then plug into PC and from command line, "adb reboot bootloader". That should verify adb, If that doesn't work, your PC not talking to device.

hossman said:
Agree something with your PC.
Phone will automatically exit fastboot if no connection in timely manner.
Check drivers are installed, reboot your PC.
Also be sure USB debugging is on in Dev option and trust PC.
For me, I generally boot Android normal. Then plug into PC and from command line, "adb reboot bootloader". That should verify adb, If that doesn't work, your PC not talking to device.
Click to expand...
Click to collapse
I reinstalled the drivers and the command "adb reboot bootloader" works for me that means it boots to fastboot mode but when in fastboot mode, when i enter a command "fastboot devices" it does nothing and when i enter command "fastboot oem unlock" it again says waiting for any device.
i have attached a screenshot of it.

I've tried restarting my pc as well as my phone and after 5-6 attempts it is now unlocked.
Thanks guys for supporting and giving response to my post
Love ya'll

CherryFarmer8 said:
I reinstalled the drivers and the command "adb reboot bootloader" works for me that means it boots to fastboot mode but when in fastboot mode, when i enter a command "fastboot devices" it does nothing and when i enter command "fastboot oem unlock" it again says waiting for any device.
i have attached a screenshot of it.
Click to expand...
Click to collapse
same problem boss, did you already solved this? please help me out

Andrew.kathy said:
same problem boss, did you already solved this? please help me out
Click to expand...
Click to collapse
The solution for fastboot disconnecting after a few seconds are the windows drivers. There are different drivers for our phone, normal, bootloader and fastboot. Windows loads these drivers depending in which state the phone is.
If you still didn't find the correct drivers, you should try installing MiFlash, as it contains all the needed drivers for our phone
If you like to try the Linux way, there's a distro called FWUL linux here on XDA

capajga said:
The solution for fastboot disconnecting after a few seconds are the windows drivers. There are different drivers for our phone, normal, bootloader and fastboot. Windows loads these drivers depending in which state the phone is.
If you still didn't find the correct drivers, you should try installing MiFlash, as it contains all the needed drivers for our phone
If you like to try the Linux way, there's a distro called FWUL linux here on XDA
Click to expand...
Click to collapse
Yeah, just go to windows drivers, click update device driver, browse my computer, let me pick, choose android > next > and choose another version or try whatever you feel is appropriate

CherryFarmer8 said:
Yeah, just go to windows drivers, click update device driver, browse my computer, let me pick, choose android > next > and choose another version or try whatever you feel is appropriate
Click to expand...
Click to collapse
I also have this problem drivers are installed and fine but when I go to fastboot within like 15 sec it automatically turns off.

I fixed it with this https://forum.xda-developers.com/attachments/howto_driver-zip.2480396/

No ADB. No TWRP. No Magisk. Am I screwed?

Basically, I installed Havoc OS, tried flashing a couple kernels, kept getting systemui crashes, so I decided to dirty flash HavocOS again, and forgot to flash TWRP again before I exited TWRP.
Next, I boot back into my phone, opened Magisk Manager to find that Magisk is not installed, just the manager. I can't install Magisk as I have no TWRP...Which leads me to my next point, trying to boot into recovery brings me no avail as I forgot to flash TWRP. I have zero recovery right now.
Thirdly, HavocOS Suffers from the whole issue of needing SELinux set to permissive, for ADB to work...I can't do that, because I don't have Magisk/root.
Please tell me that someone has an idea here? I'd like to get TWRP back, or back to 100% stock and I can start over, or something other than a custom rom with serious SystemUI crashes and no root...
SOS!

This is not even close to a softbrick. Just boot TWRP using Fastboot and flash the zip from inside TWRP to install it. Also, there are various other solutions to fix your problem. Another one would be to simply use Deuces Recovery Script and go back to Stock.

As d-m-x stated boot twrp with fastboot boot not fastboot flash. Twrp will load into the phone then you can flash twrp and magisk.

I'd tried Fastboot already, will try again momentarily though.

D-m-x said:
This is not even close to a softbrick. Just boot TWRP using Fastboot and flash the zip from inside TWRP to install it. Also, there are various other solutions to fix your problem. Another one would be to simply use Deuces Recovery Script and go back to Stock.
Click to expand...
Click to collapse
Fastboot hasn't worked either. Unless I'm doing something wrong, but I just get "waiting for any device" despite having adb on/off, being in bootloader/fastboot mode or being booted into android, etc.

For Fastboot to work you have to be in the Bootloader Menu. How did you unlock and root your Phone in the first place? That should have taken you through those steps.
Anyways, it's likely that the computer just doesn't recognize the phone. Connect it and go into your Device Manager and see if it's properly recognized. If not install the correct USB Drivers and try again. If everything is set up correctly you can type "fastboot devices" while in the bootloader and you should see your Devices address which means it is connected and ready. Then boot TWRP as stated and install the zip from within.

D-m-x said:
For Fastboot to work you have to be in the Bootloader Menu. How did you unlock and root your Phone in the first place? That should have taken you through those steps.
Anyways, it's likely that the computer just doesn't recognize the phone. Connect it and go into your Device Manager and see if it's properly recognized. If not install the correct USB Drivers and try again. If everything is set up correctly you can type "fastboot devices" while in the bootloader and you should see your Devices address which means it is connected and ready. Then boot TWRP as stated and install the zip from within.
Click to expand...
Click to collapse
Bootloader is unlocked etc. I initially did everything using the P2XLToolskit 2.0
You're correct, I think its simply a case of the PC not recognizing the device. I've already checked device manager, and it's not properly installing the device. I've multiple times tried reinstalling the universal driver, and various other fixes. I think it relates to the whole issue of HavocOS being screwy about USB. Many people have reported issues with USB recognition issues when ADB is turned on. The consensus from how I understand it, is that ADB ON = Phone won't be recognized. ADB OFF = Device should be recognized for file/data transfer...However even with ADB off my PC is still not installing drivers properly / recognizing the device.
The Device Manager lists my device as "Unknown USB Device (Device Descriptor Request Failed)"
Also tried:
1. Go to C:\Windows\INF
2. Find the file "wpdmtp.inf"
3. Right click the file and click 'Install'
4. Once that is done, simply plug your phone and it should work.
^ did not work.

Dragostini said:
Bootloader is unlocked etc. I initially did everything using the P2XLToolskit 2.0
You're correct, I think its simply a case of the PC not recognizing the device. I've already checked device manager, and it's not properly installing the device. I've multiple times tried reinstalling the universal driver, and various other fixes. I think it relates to the whole issue of HavocOS being screwy about USB. Many people have reported issues with USB recognition issues when ADB is turned on. The consensus from how I understand it, is that ADB ON = Phone won't be recognized. ADB OFF = Device should be recognized for file/data transfer...However even with ADB off my PC is still not installing drivers properly / recognizing the device.
The Device Manager lists my device as "Unknown USB Device (Device Descriptor Request Failed)"
Also tried:
1. Go to C:\Windows\INF
2. Find the file "wpdmtp.inf"
3. Right click the file and click 'Install'
4. Once that is done, simply plug your phone and it should work.
^ did not work.
Click to expand...
Click to collapse
Have you tried different USB A to USB C cables and ports?

Dragostini said:
Bootloader is unlocked etc. I initially did everything using the P2XLToolskit 2.0
You're correct, I think its simply a case of the PC not recognizing the device. I've already checked device manager, and it's not properly installing the device. I've multiple times tried reinstalling the universal driver, and various other fixes. I think it relates to the whole issue of HavocOS being screwy about USB. Many people have reported issues with USB recognition issues when ADB is turned on. The consensus from how I understand it, is that ADB ON = Phone won't be recognized. ADB OFF = Device should be recognized for file/data transfer...However even with ADB off my PC is still not installing drivers properly / recognizing the device.
The Device Manager lists my device as "Unknown USB Device (Device Descriptor Request Failed)"
Also tried:
1. Go to C:\Windows\INF
2. Find the file "wpdmtp.inf"
3. Right click the file and click 'Install'
4. Once that is done, simply plug your phone and it should work.
^ did not work.
Click to expand...
Click to collapse
Try these troubleshooting steps:
- make sure you're running the LATEST SDK Tools
- Try diff USB cables (switch from 2.0 to 3.0, or vice versa)
- Try a diff USB port
- Make sure you're in the proper fastboot folder with the fastboot application
- Boot into bootloader type fastboot devices see if you get a serial number
In my sig is a link for troubleshooting, and step by step that includes links to get latest SDK Tools.
If all else fails, I'd reco a fresh factory image install and get back to your cust Rom from there, rather than spend a day or two chasing ghosts.
Good luck!

Az Biker said:
Try these troubleshooting steps:
- make sure you're running the LATEST SDK Tools
- Try diff USB cables (switch from 2.0 to 3.0, or vice versa)
- Try a diff USB port
- Make sure you're in the proper fastboot folder with the fastboot application
- Boot into bootloader type fastboot devices see if you get a serial number
In my sig is a link for troubleshooting, and step by step that includes links to get latest SDK Tools.
If all else fails, I'd reco a fresh factory image install and get back to your cust Rom from there, rather than spend a day or two chasing ghosts.
Good luck!
Click to expand...
Click to collapse
Spoke with Google; getting the phone RMA. Blatantly told the guy it was rooted previously, bootloader unlocked, and running a custom ROM. He said it didn't matter. I will report back on this thread once I have new phone in hand, just to confirm all went well.

Reporting back.
Brought phone to virgin mobile, obviously still heavily modified.
Was given a loaner phone. Signed a paper saying I'd pay 150 for the loaner if it broke. Broke loaner screen same day.
Just picked up a brand new pixel 2 xl they shipped (phone only) because mine was considered unrepairable. I was charged 169 for the loaner phone, to my account with virgin. No cash transaction.
All in all, they honoured googles view of not minding the modifications so long as it's an issue they don't feel is related.
Cheers.