Develop Bugs

[Q] Enter Fastboot mode with scrapped volume button, to relock the bootloader

Hello friends,
How to get into fastboot to relock the bootloader, if my volume button is dead? By dead, I mean the ribbon has been ripped off of the mobo (it was soldered onto mobo).
Since I'm a brand-new noob, the only way I know of and have done is to get into fastboot mode and lock it back up like what I did when I unlocked it. Any other way to lock it, ideally within the Android OS? Since my volume buttons are completely dead, I doubt that I can get into any "mode" other than OS right now..
TIA!

adb reboot bootloader.

I've seen that command in a post from search earlier, but there was no response after that post.
Would you explain the procedure? I am afraid that I might do anything wrong on top of these disasters i've gone thru with this phone
I also saw another line during earlier search: "if they don't know how to setup an adb command, they probably shouldn't unlock their phones"... Looks like I've done what I shouldn't..?

I would say doing whatever ripped the volume button cable out was what you shouldn't have been doing If you unlocked the phone you have the software you used to unlock, right? What software/guide did you use/follow? Are you using Windows/Linux/Mac? The only way to get to the bootloader w/o the volume buttons (afaik) is to use adb via usb. If you provide more details I can try to help you.

cswithxda said:
I've seen that command in a post from search earlier, but there was no response after that post.
Would you explain the procedure?
Click to expand...
Click to collapse
Once you're in adb reboot bootloader, do fastboot oem lock. Opposite of how you unlocked it in the first place

cswithxda said:
I've seen that command in a post from search earlier, but there was no response after that post.
Would you explain the procedure? I am afraid that I might do anything wrong on top of these disasters i've gone thru with this phone
Click to expand...
Click to collapse
navigate your cmd line to the folder with adb and fastboot in it. Hook the phone up to the computer and type:
Code:
adb reboot bootloader
which will make your phone reboot into the bootloader mode. You can then proceed with what you need to do.
I also saw another line during earlier search: "if they don't know how to setup an adb command, they probably shouldn't unlock their phones"... Looks like I've done what I shouldn't..?
Click to expand...
Click to collapse
I agree with whoever said that. This is another example of people messing with things before reading and learning how they work.

Thanks for your help guys!
btw, anyone found xdadevelopers to load extremely slower in Firefox when compared to Chrome? (just offtopic)
Anyway, I unlocked the bootloader when I was switching to yakju cmd and this folder called "fastboot-and-adb" in which there is both adb.exe and fastboot.exe. I used command "fastboot unlock bootloader" or something alike.
I'll do some more search and learn. Don't want you guys to think of me as a lazy bone who unlocked their bootloader using 1-click toolkit
p.s. edit: in my other thread, someone suggested using quickboot app.
Thanks for your replies guys!

martonikaj said:
navigate your cmd line to the folder with adb and fastboot in it. Hook the phone up to the computer and type:
Code:
adb reboot bootloader
which will make your phone reboot into the bootloader mode. You can then proceed with what you need to do.
I agree with whoever said that. This is another example of people messing with things before reading and learning how they work.
Click to expand...
Click to collapse
Somehow it says device not found
I do have proper driver (Naked Driver Beta 0.5 by 1wayjonny) that my phone was able to be recognized under bootloader at the time when I could actually get into bootloader. My phone is also being recognized as media device now... I have also turning usb debug on...

Try adb remount
The ad devices
This should list the serial number
Then all commands should work
Sent from my Galaxy Nexus using xda premium

cswithxda said:
Somehow it says device not found
I do have proper driver (Naked Driver Beta 0.5 by 1wayjonny) that my phone was able to be recognized under bootloader at the time when I could actually get into bootloader. My phone is also being recognized as media device now... I have also turning usb debug on...
Click to expand...
Click to collapse
You need to turn USB debugging on, and then type "adb devices" and see if it shows up. It may not using the Naked Driver; I had to install the full Samsung USB driver package before ADB would see my Galaxy Nexus.
If it does show up, then you type "adb reboot-bootloader" and it should boot into fastboot. Then just type "fastboot oem lock" and it will wipe the storage partitions and restore the bootloader lock.

Thanks for the help at late night guys. I finally got into the bootloader, thru a mac tho Kinda ironic that I am a supporter of Windows, well, at least a firm user of Windows.
Tried adb remount, it still says device not found
synaesthetic said:
You need to turn USB debugging on, and then type "adb devices" and see if it shows up. It may not using the Naked Driver; I had to install the full Samsung USB driver package before ADB would see my Galaxy Nexus.
If it does show up, then you type "adb reboot-bootloader" and it should boot into fastboot. Then just type "fastboot oem lock" and it will wipe the storage partitions and restore the bootloader lock.
Click to expand...
Click to collapse
I believe that you quoted my "I have turned USB debug on" ;p
Gave up on trying Windows drivers. When I was flashing the Yakju, I tried Samsung full driver, and it didn't work on my machine, i.e., the phone can't be detected in bootloader mode, while the beta 0.5 driver worked. So I decided not to mess with it anymore.
It looks like when the phone is not under bootloader, windows recognize it fine as MTP devices and install proper samsung driver from the internet directly. This allows me to open it up in explorer to browse files and such, but the phone won't show up under adb devices somehow.
Looks like MTP device (when the phone is in Android OS) and the fastboot mode use two kinds of drivers. This is just my assumption, though.
Anyway, finally got into bootloader now with Mac, and it's pretty funny I have to do everything thru command as the volume rockers are dead
And most importantly, thank you guys for your help!

Just another update
It's real funny now that the bootloader is locked, I can't unlock it again cuz I don't have the volume button working, so I couldn't choose YES on the phone.
I'm not trying to unlock it again, but just to confirm if there's really no work around, in case I encounter this situation again in the future
Lucky that locking the bootloader won't erase everything, or I won't be able to flash a ROM with it locked... :cold sweating:

[Q] Use computer to turn phone on?

So short story, my galaxy nexus's power button doesnt work anymore. It stopped working for no reason yesterday, yet when I plug it into the charger the charging screen comese on. I want to be able to power my phone on so that I can get all the information onto my computer so that I can easily transfer stuff to my new phone (replacement gnex coming tomorrow) Is there a way I can turn on my phone without using the power button? Any help would be much appreciated.

If you've got the SDK or just ADB available, you should be able to use the command of "adb reboot" to get the device to boot up. Could be wrong.

Can someone guide me in the direction I need so I can do this adb reboot?

chantheman525 said:
Can someone guide me in the direction I need so I can do this adb reboot?
Click to expand...
Click to collapse
Download the ADB file (usually bundled with Fastboot) from any one of these guides that requires it. Or just Google for it.
Unzip all of that, use command line to get into it's directory, hook your phone up over USB, and type:
Code:
adb reboot
Again, not sure if this will work when the phone is off. If it will work, I think you had to have USB debugging turned on. Its not working for me currently on OSX. So I don't think it will. Maybe there's a different ADB command that can help you.
Its a long shot. There are probably better options.

I'd agree with adb reboot if your computer will recognize it from this mode...
Use the guide linked in my sig to set up ADB if you need.

I'm a newbie to all this, but I don't think anyone here mentioned the necessary step of downloading and installing your phone's specific ADB drivers to your computer.
So, to recap:
Download your phone's ADB drivers on to your computer and install them.
Plug your phone in.
Go to your command prompt and type 'adb reboot'.
I think. I'm new, as you can see by my post count and thanks meter.

I tried to adb reboot. Unfortunately the galaxy nexus cant be recognized when the phone is off. Disappointing but not the end of the world. Thanks for everyones help.

If adb works in download mode you could make a jig to get you there.
Sent from my Galaxy Nexus using Tapatalk

Fastboot does not work but ADB does

Hey guys,
The power button on my phone stopped working this morning (without water damage). I'm preparing the phone to return to Samsung warranty, and in the process of reseting to stock and re-locking the OEM I noted that the phone does not respond to fastboot commands in the bootloader despite this working on the same system a week ago, no change in drivers or anything else. I installed PDAnet, still broken on Win 7 although I can reboot with adb.
I then tried this on OSX, again I can reboot with ADB, but the phone is unresponsive in fastboot.
I have three working hypotheses and I'm hoping someone can help me:
a) in some process of flashing my phone and being an uninformed n00b maybe I flashed something I shouldn't have or used some combination of partial fastboot flashes I shouldn't have. has this happened to anyone else?
b) whatever hardware damage knocked out the power button might have partially knocked out the bootloader
c) I just have really bad luck with driver set up and I just happened to mess up two different computer driver configurations but the phone is fine. to this end, I am setting up another Win 7 system fresh on a virtual drive as I'm typing, though I have little faith it will be different

update: fastboot commands didn't work on the other windows 7 virtual system, although adb reboot bootloader did
freaking a this is annoying.
i have a fully stock ROM and radio, anybody to know how to flash a new recovery image and lock the bootloader without accessing fastboot? Just have to get this ready to go back to Samsung so they can fix their own hardware mess ups.

they are 2 different drivers.

As much as I don't like using/recommending the Galaxy Nexus Toolkit (only because I feel it's better to actually learn everything you're doing), it's the easiest way I've found to get the Fastboot drivers installed.
http://forum.xda-developers.com/showthread.php?t=1392310

Thanks guys for your comments.
I've tried Android SDK drivers, PDANet, Universal Naked Driver, and now the one click toolkit mentioned above, some on three different operating systems (Win 7, Win 8, OSx) on 32 and 64 bit.
The wierdest part is that under device manager, no device shows up when the phone is in fastboot, no is there any noise or any recognition of the device being connected at all. It is completely, 100% silent. (again, ADB works when the phone is booted).
I recognize that this may not be possible, but does anyone know how to flash a recovery image without being in the bootloader mode?

If fastboot isnt working like it should, and you are sure it isnt user error, then take it for warranty.
Sent from my i9250

yeah fastboot + the power button (which was defunk in clockwork mod) are back online again, dunno for how long. agreed seems like a hardware/warranty issue.

Recoveries can be flashed with ROM Manager assuming you have SuperUser permissions, but otherwise you or the toolkit need fastboot working.
Sent from my Galaxy Nexus using xda app-developers app

[Q] cant enable usb debugging, fastboot doesnt work

I have a Nexus 7 2013 that wont boot. USB Debugging was not enabled. At this point, I am just trying to wipe the machine with a stock image, but I am having trouble.
I have installed the sdk and drivers (so many drivers!)
Recovery mode fastboot does not recognize the device.
ADB recognizes the Nexus, but I cant seem to get it to do anything with it.
e: failed to mount anything.
I have read through so many forum threads that I'm just overwhelmed, and they all seem to require the machine being in USB debugging mode before any changes can be made.
Please help or tell me what pertinent information I have omitted.
Thank you

I think USB debugging only matters in ADB, which is when the device is actually booted into Android OS. You probably want fastboot, which is a different "application" and set of commands in a command prompt.
Code:
fastboot devices
Does that give you anything when the tablet is in fastboot mode? It should list the serial number of the device, similar to "adb devices" does. If not, it could be drivers, or another issue with the device.
Have you tried unlocking the bootloader? This will induce a factory reset of the current firmware version, which may allow you at least boot normally and take any available OTA updates.

Hello,
fastboot devices lists nothing, while adb does show the serial number.
I have used so many tutorials and a couple of toolkits that now I have no idea what is happening with my drivers.
Unlocking the bootloader to force a factory reset sounds amazing, but all the information I can find says I need to have USB debugging enabled to do so. I can not boot into the system to enable it.
Is there a way to force a reset without USB debugging?
Thank you

Usb debugging is irrelevant. Forget about it, it's only used when the system is booted.
You need to get fastboot devices to recognize the tablet.
Uninstall any and all toolkits and drivers. Redownload the sdk. Boot to the bootloader and plug it in, the drivers should install automatically. If not install the google usb drivers from the sdk manager in the sdk.
Try fastboot devices again. If it doesn't work try a different usb cord/port/computer.
You are in the bootloader when running this command right? Not the recovery? I think with the tablet off it's volume down and power. The screen that says start in big green letters at the top and has device info in the bottom left is what you want.
Edit: Did you boot to recovery and select the options to wipe data and cache? Sometimes thats all thats needed.

Also booting to recovery and performing a factory reset may be sufficient.
ADB will indeed function in recovery. I don't think you have to enable USB debugging to get this to work though.

Are you typing fastboot devices while booted in recovery? Typing fastboot devices while in recovery or booted into Android will do nothing.

hello, thank you for your advice. I now get the nexus seen by fastboot (and win 7) but have hit a wall. The last time I had my computer and the nexus together was weeks ago, when I my computer BSOD during what I thought was a simple flashing of the the stock image, but turned out to be hours of the nexus saying it was erasing personal data ... and then crash. I have replaced and added fans so my cpu wont overheat again, so please offer ideas why "fastboot flashall" or "fastboot flash image-razor-kot49h" wont work.
I appreciate all responses, and believe the answer is either very simple or a catastrophic hardware failure. I base this belief on what is left in my head after smashing it into the wall so many times over the last month when my wife asks me, "have you fixed my nexus yet, or do I need to figure out a way to buy a new one next month?"
I am stuck at unlocking the bootloader. I have highlighted "yes" on the nexus and pressed power and my command window says "erasing user data." It has said this for the last 18 hours. This is the second computer I have tried this on, using 3 different usb cables. What am I missing?

helpmynexus said:
hello, thank you for your advice. I now get the nexus seen by fastboot (and win 7) but have hit a wall. The last time I had my computer and the nexus together was weeks ago, when I my computer BSOD during what I thought was a simple flashing of the the stock image, but turned out to be hours of the nexus saying it was erasing personal data ... and then crash. I have replaced and added fans so my cpu wont overheat again, so please offer ideas why "fastboot flashall" or "fastboot flash image-razor-kot49h" wont work.
I appreciate all responses, and believe the answer is either very simple or a catastrophic hardware failure. I base this belief on what is left in my head after smashing it into the wall so many times over the last month when my wife asks me, "have you fixed my nexus yet, or do I need to figure out a way to buy a new one next month?"
I am stuck at unlocking the bootloader. I have highlighted "yes" on the nexus and pressed power and my command window says "erasing user data." It has said this for the last 18 hours. This is the second computer I have tried this on, using 3 different usb cables. What am I missing?
Click to expand...
Click to collapse
I have the same problem .. Have You reslove it?

bikicviki said:
I have the same problem .. Have You reslove it?
Click to expand...
Click to collapse
This may help...it may not. But I was having issues getting my bootloader unlocked also when I started on mine. My remedy was to
1 plug in the nexus into the usb
2 I run Linux so it gives me choices on what to do with newly plugged in usb device. I noticed two identical choices to mount device. Choosing one just mounted the camera for some strange reason. I closed that window, then chose the other choice to mount device, the window opened and my full internals were there in the window
3 from a terminal I just wrote a prompt: fastboot oem unlock
and for some reason, it unlocked.
To sum it up I'm convinced it has something to do with how the device gets mounted. At least on mine anyway.
As for activating developer from a terminal I read it could be done but never tried it myself, if you want here's the link for the info, read the second answer down.
https://stackoverflow.com/questions/47510232/is-there-any-adb-command-to-enable-developer-options
Also check out the fastboot manual for some other things to try, you never know some may work in your situation at a terminal prompt
man fastboot
---------- Post added at 07:12 PM ---------- Previous post was at 06:57 PM ----------
Troops42 said:
This may help...it may not. But I was having issues getting my bootloader unlocked also when I started on mine. My remedy was to
1 plug in the nexus into the usb
2 I run Linux so it gives me choices on what to do with newly plugged in usb device. I noticed two identical choices to mount device. Choosing one just mounted the camera for some strange reason. I closed that window, then chose the other choice to mount device, the window opened and my full internals were there in the window
3 from a terminal I just wrote a prompt: fastboot oem unlock
and for some reason, it unlocked.
To sum it up I'm convinced it has something to do with how the device gets mounted. At least on mine anyway.
As for activating developer from a terminal I read it could be done but never tried it myself, if you want here's the link for the info, read the second answer down.
https://stackoverflow.com/questions/47510232/is-there-any-adb-command-to-enable-developer-options
Also check out the fastboot manual for some other things to try, you never know some may work in your situation at a terminal prompt
man fastboot
Click to expand...
Click to collapse
Tried to edit but anyway:
After re..re, rereading your post, and responces. Have you tried the old fashioned way
Hold down the (down volume) button at the same time the (power) key.."Together" If you get anything that pops on your screen let go of the keys, one tap at a time tap the volume up or down key ONLY, until it says (START), its in green type. if you get there you should be ok, to move along

Locked bootloader by mistake, can't use the phone now

Hey all,
I just got a OnePlus 5T and because I needed a specific system language I decided to flash a custom ROM. I unlocked the bootloader, flashed Derpfest on it and it was all good until I made a mistake. From the Developers options I unchecked "OEM Unlocking" and then when I restarted into the bootloader I did a fastboot oem lock
Now the phone says it's corrupted and it won't boot. Since it's bootloader is locked I can't unlock it, I can't go into recovery and I can't start the phone. Is there anything else I can do to get it back? I don't care about wiping everything at this point, I'm just trying to get it back to a working state.
I want to add I did try the Unbrick tool https://forum.xda-developers.com/oneplus-5t/how-to/oneplus-5t-unbricking-tool-confirmation-t3733012 but I am getting stuck at the drivers. Windows won't see QHUSB_BULK in device manager and I don't see anywhere else where the driver for the phone might be. I do see the device when doing fastboot devices but again, can't see what drivers is using.
Thanks!

Emo113 said:
Hey all,
Since it's bootloader is locked I can't unlock it, I can't go into recovery and I can't start the phone. Is there anything else I can do to get it back? I don't care about wiping everything at this point, I'm just trying to get it back to a working state.
I want to add I did try the Unbrick tool https://forum.xda-developers.com/oneplus-5t/how-to/oneplus-5t-unbricking-tool-confirmation-t3733012 but I am getting stuck at the drivers. Windows won't see QHUSB_BULK in device manager and I don't see anywhere else where the driver for the phone might be. I do see the device when doing fastboot devices but again, can't see what drivers is using.
Thanks!
Click to expand...
Click to collapse
The unbrick tool is your best bet, what you need to do is follow the instructions. If its windows 10, you can go to device manager and update drivers from there. Make sure you are logged in as admin. Also some antivirus don't like the MSM tool so you may need to disable that.
Ensure the sequence is right. Connect usb wire to computer, press volume up, connect usb c to phone. Some ppl have tried pressing both volume up and down at the same time to make it work (same way as resolving Sahara error). If it boots first thing you need to do is back up efs.
Second you need to run these commands
adb shell
su
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
exit.
It will save the persist.img on your phone internal memory. Save this as well as efs somewhere safe. Also share the persist.img with me cause I need it for the OPlus 5t for my phone.
Hope it helps

sn809 said:
The unbrick tool is your best bet, what you need to do is follow the instructions. If its windows 10, you can go to device manager and update drivers from there. Make sure you are logged in as admin. Also some antivirus don't like the MSM tool so you may need to disable that.
Ensure the sequence is right. Connect usb wire to computer, press volume up, connect usb c to phone. Some ppl have tried pressing both volume up and down at the same time to make it work (same way as resolving Sahara error). If it boots first thing you need to do is back up efs.
Second you need to run these commands
adb shell
su
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
exit.
It will save the persist.img on your phone internal memory. Save this as well as efs somewhere safe. Also share the persist.img with me cause I need it for the OPlus 5t for my phone.
Hope it helps
Click to expand...
Click to collapse
Thanks for the help! I ended up finding a different Windows PC with no memory of the drivers for this phone so I was able to install them in the correct order and then run the MSM tool to get the phone back to stock Oreo. From there I unlocked the bootloader again to install TWRP and then my custom ROM.

Emo113 said:
Thanks for the help! I ended up finding a different Windows PC with no memory of the drivers for this phone so I was able to install them in the correct order and then run the MSM tool to get the phone back to stock Oreo. From there I unlocked the bootloader again to install TWRP and then my custom ROM.
Click to expand...
Click to collapse
That is superb. If you could do the other bit I would really appreciate it.
Thanks

sn809 said:
That is superb. If you could do the other bit I would really appreciate it.
Thanks
Click to expand...
Click to collapse
Hey there, sorry I totally mis-read the last part of your original post as something that I should do and I didn't see that you need that. Since I used the MDM tool I didn't bother to try your way first and since the phone wasn't mine to keep I already gave it to the owner so I don't have access to it anymore.
Again, very sorry about that.

No dramas. I also got it from some one else who was kind enough to lend it to me and let me root it and wipe it clean and then get the file and start using his phone again.
Thanks