Nexus S can't unlock bootloader - Android Q&A, Help & Troubleshooting

Hi Everyone.I have Nexus S I9023. And i can't unlock bootloader. My phone , unfortunately, he fell into bootloop . And I do not have the option to run , among other things debug mode . I tried to rescue the phone via adb update in recovery . but my phone pops up that the installation was interrupted .
When I got the phone in fastboot mode by typing it in the CMD , " fastboot devices" , the command I find my phone , and fastboot oem unlock does not want to work. I have installed the SDK , drivers also have google . What to do?

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Fastboot help

So here is my problum i cant get in to fastboot mode on my lg k8 us375 android m 6.0.
here is what im doing
1 adb and fastboot are installed on pc (widows)
2. I have developer optons and oem unlock are enabled
3. I open command box terminal wgat ever u want to call it
4 i enter adb devices and it shoes my phone
5 i enter adb reboot-bootloader and it does not say fastboot mode on screen like i have read it is supose to ot just restarts my phone
( note i have tried reboot_bootloader like that and like this reboot-bootloader. Same result )
So my qestion is am i doing it wrong or is it not on this phone. Or is it hidden some how please help
Ive beentrying to root y phone for about 4 monthes now

Redmi note 3 not getting detected in fastboot mod

Hey friends i was able to unlock bootloader of my REDMI NOTE 3 OFFICIALLY.
I wan to root the device and install TWRP but for tat i have to connect my phone in fastboot mode.
The thing is phone is recognised as an adb device when it is on but after putting the phone in fastboot mode my laptop is not showing in cmd after " fastboot devices" command
plz help if anyne know how to fix this.
How are you putting it in fastboot mode?
did you already install correct driver in your pc?
you can try to instal latest mi pc suite which will help you to instal correct driver for your phone.
If you're already success unlocking with official way..then it's mean your fastboot driver already correct (if you're using the same computer when you're unlocking before)
Maybe i think you're missed something to put your phone into fastboot mode..
First way you can go into fastboot mode with ADB command while your phone already ON, just typing command "adb reboot bootloader" then enter..your phone will reboot into fastboot mode
Second way to go into fastboot mode firstly you must turn off your phone..just wait until that phone is truely OFF..
then press and hold volume down button..then followed with pressing and hold power button..your phone will booting into fastboot mode.

[help] cmd fastboot devices cant detect

Hello , this is my first time on Oneplus X , I was following this guide ,https://forum.xda-developers.com/oneplus-x/general/discussion-how-to-root-oneplus-x-t3242830 and this guide https://forums.oneplus.net/threads/guide-onyx-how-to-unlock-bootloader-install-custom-recovery-root-take-efs-backup-more.401713/ , but I stucked at when the guide told me to type in "fastboot devices " , as the cmd turns out to be blank and nothing happened , but when I typed in "adb devices" , it does shows me my oneplus x serial number so adb devices is working , idk what is wrong right now , ticked usb debugging , and ticked oem unlock ,
https://prnt.sc/i9yktt
tried reinstall adb driver and all that . Did "adb reboot bootloader" , still nothing , went to fastboot mode , still nothing .
But , there's one thing lol , when I went to fastboot mode manually (Power+Vol up) , then plug in the phone to the pc , the driver shows triangle signs in the Device Manager which means the driver is the problem . So 1) what should I do from that? 2)Is it really the driver problem? 3)Are my phone bricked?
sorry for da bad post , idk much about posting trick .
idk what to do anymore lol , Im trying to flash it to Sultan's Rom .
Any help would be greatly appreciated , Thanks In Advance

Fastboot Not Sending Flash Commands

Hello, currently trying to flash TRWP in my Asus Zenfone Max Pro M1. Already unlocked the bootloader and everything but ive just hit a brick wall. The fastboot console recognizes my phone when i type fastboot devices, but when i send the command to flash the recovery nothing happens, the CMD just stops responding as if is loading something but i have waited for about 1 hour and nothing happens, can someone please shine me a light on this problem? Thank you in advance .
Hi , did you bricked your device or what is going on ?
If the problem is just fastboot terminal then reinstall your drivers and disable driver signature , also use USB deview aplication to uninstall hidden drivers for your device : https://www.nirsoft.net/utils/usb_devices_view.html
Another way is to install this version of minimal adb and fastboot:
https://androidfilehost.com/?fid=745425885120698566

Huawei Nexus 6P unlock download mode in bootloader how?

Have decided to root my phone with Adb and fastboot devices in Windows 10 and also installed drivers sucessfully and i can se my phone in cmd when i type fastboot devices.
Have unlock the bootloader in the phone and Enabled USB failure search in Advanced settings in developers mode.
When i loaded the Twrp file in cmd with adb i could copy and write the file to my fastboot device but when i reboot the phone into bootloader i se that download mode are disabled.
How can you unlock download mode ?
When i try to reboot into recovery mode i get the Android bot with a red triangle into it.
Im guessing that happens for i dont have download mode enabled and im wounder is the Twrp file on my phone or have that setting stopped this process?

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