Unable to re-lock nexus-s through fastboot - Nexus S Q&A, Help & Troubleshooting

i'm in the process of re-locking my bootloader in order to send it to Samsung for repair (home button not working). when i run the command line "fastboot oem lock", it just keeps hanging at "waiting on device" and nothing happens. i have the correct drivers installed. when i run "adb devices", it shows up the device. however, when i run "fastboot devices", it does not show up anything. any help on relocking my bootloader would be appreciated. Thanks!

Probably shouldn't be answering this here buuuuut...
adb reboot bootloader
and THEN
fastboot oem lock.
See what happens. You have to be in boot loader mode. Please move your questions to the Q&A section sir.

i did enter that command in order to get into fastboot. after that , i ran the command "fastboot oem lock" but it gets stuck at "waiting on device"

Update your drivers

Yea at this point I'd say its a connectivity problem. Drivers and or cable, but since you are getting adb devices to recognize, its not your cable. You should really use ubuntu, you would save yourself a lot of time, because you don't really have to deal with drivers like windows.

'sudo fastboot oem lock'
You need to be super user.

sure you went into bootloader and not recovery? because adb is seen in recovery and doesnt work in bootloader!

Related

[Q] CANNOT UNLOCK BOOTLOADER USING htcdev.com

i have registered on htcdev.com.
i followed the steps to the point where i had to execute the fastboot file to get an identifier token using a cmd command.
for some reason it say "waiting for device"
it has been like that for hours.
tried it about 3 times. I had a problem with rebooting into bootloader using VOLUME DOWN + POWER button so i ised abd and it worked
exact command i typed was "fastboot oem get_identifier_token"
PLEASE HELP ME
You don't have the right drivers for fastboot, it seems.
Find a guide and install them.
I always run ADB devices or fastboot devices first to check that I'm connected to the phone, before running any other commands.
Sent from my Nexus 7

Need help getting in to fastboot

Hi!
I unlocked my phone - but when i type in the command "adb reboot bootloader"
it goes in to fastboot for a second, and then I get "bootloader unlocked" warning and after that it boots in to android.
How can I stop at fastboot to flash a custom recovery ?
Cheers!
EDIT:
NVM fixed
I am sure it was the right way.
How did you get it fixed?
I turned it off completely and after that, it accepted the command and stayed in fastboot.
Good to know, thanks for the information.

Fastboot device list not showing in windows 10 PC (oneplus7)

HI
I tried to unlock the bootloader in oneplus 7. (Did all necessary setting like oem unlocking,Android reboot, USB debugging, USB installer)
when i reboot the device using bootloader, Device appearing in fastboot mode.
But when i check in "fastboot devices" there is no listing of devices !!
Normal "adb devices" is listing the device.
when i try to execute the command "fastboot oem unlocking " -Nothing is happening in Mobile.
Kindly help to resolve this issue.
androiduser0304 said:
HI
I tried to unlock the bootloader in oneplus 7. (Did all necessary setting like oem unlocking,Android reboot, USB debugging, USB installer)
when i reboot the device using bootloader, Device appearing in fastboot mode.
But when i check in "fastboot devices" there is no listing of devices !!
Normal "adb devices" is listing the device.
when i try to execute the command "fastboot oem unlocking " -Nothing is happening in Mobile.
Kindly help to resolve this issue.
Click to expand...
Click to collapse
What does it say on the phone?
Sent from my mata using XDA Labs
possibly change the USB cable and use the one supplied with the device
ignore

Re-lock bootloader ?

Hello all
I was wondering if anyone has successfully managed to re-lock a bootloader (on a stock ROM) ?
I got an A51 that I kept as a backup but decided to give it to my aunt instead.
But I'd like to get rid of the the pesky message at boot saying "your bootloader is unlocked, dangerous, blah blah" before I give it to her.
I've flashed the latest stock ROM but it doesn't get rid of that message...
So if anyone has an idea, I'd appreciate it
Try it
adb reboot-bootloader
fastboot flashing lock
or
adb reboot-fastboot
fastboot flashing lock
Edit:
or
How to Relock Bootloader Galaxy A51
Hi, for those of you who have already unlocked the boot loader before, and if one day you change your mind to lock the bootloader again, here's how (remember, This will wipe your data again!) - Shut down your device. - attach the data cable to...
forum.xda-developers.com
Yeah, I tried that already ("fastboot oem factory-lock" for example, as well as some others), but each fastboot command just yields a "< waiting for any device >" message and nothing happens...
And when I try "adb reboot bootloader", the phone reboots in the fastboot mode, but all I get is a message "entering fastboot mode" (or something similar, I can't recall exactly).
Also, when I try sending some adb commands I often get a message saying "
error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device."

LG Pheonix 5 (AT&T Unlocked) Fails to Load Bootloader

I would like to unlock the bootloader. I've enabled "Developer Mode" , "USB debugging", and "OEM unlocking". I also installed Minimal ADB and Fastboot on my Windows 10 PC. In the ADB and Fastboot terminal, it shows up as an adb device. "adb reboot bootloader" just causes the device to restart. I've only found 2 other guides, both of which are inconclusive. I've already unlocked the device with AT&T but that didn't solve my inability to unlock the bootloader. Any advice would be helpful.

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