How to Unlock Bootloader on Android! [Android Root 101 #1]

Want to root your Android smartphone or tablet? Want to install TWRP recovery and enjoy loads of custom ROMs available today for your Android device? Well, if so, in this tutorial I show you how to do exactly that starting with unlocking the bootloader. Before you can install TWRP recovery or install custom ROMs on your Android device, you will have to unlock the bootloader in most cases. Android devices guaranteed to work on: - Google devices like any Google Nexus or Pixel devices including Nexus 6, Nexus 6P, Pixel, Pixel XL, Pixel 2, Pixel 2 XL Pixel 3, Pixel 3 XL, Pixel 4, Pixel 4 XL and any other Google devices are supported.
- All OnePlus devices are supported including OnePlus One, OnePlus Two, OnePlus 3/3T, OnePlus 5/5T, OnePlus 6, OnePlus 6T, OnePlus 7 Pro, OnePlus 7T.
- Any other generic Android devices most likely use this bootloader unlock method such as budget Android smartphones, tablets, or no-brand Android devices. For all devices supported/not supported by this bootloader unlock method, please check my website here:
highonandroid.com/android-roo... Download fastboot.zip & ADB Drivers:
highonandroid.com/fastboot-zi... This tutorial is part of the Android Root 101 series, if you want to learn about Android root and custom ROMs check out the whole Android Root 101 Series w/ Table of Contents for easy browsing:
highonandroid.com/android-roo... OR check out the Android Root 101 KZbin Playlist:
hoalove.com/androidroot101
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#HighOnAndroid

[@0snguyen0]

Love your videos with direct + clear instructions and a little humor . Your "signature High on Android" is awesome!

[@user-ls1fh2vt7b]

did he just predict windows 11 WHATTTT

[@918danielc]

You tutorial videos are the best on KZbin. You give the exact step by step instructions unlike some of the other tutorials I have seen where they have only music and Captions where they skip a few steps on captions. You make unlocking and rooting simple for those people who are not as tech inclined. I fortunately am inclined in PC Mac/ Linux Android and IOS systems. Also you save people so much time by having the download files compiled and ready available. I wish i had tutorials like this when I was learning systems and coding with ADB. Keep up the wonderful tutorials for everyone my friend told me about this video who is not tech savvy but after watching your tutorials he rooted his phone and he was like I didn't without your help feeling accomplished so thank you for making people feel proud and accomplished for teaching them how to be techie.and not having to rely on a pro to do for them.

[@Outch4]

Thank god, trying to find answers and you're just straight to the point. Thanks for that.

[@ray495903314]

adb server version (31) doesn't match this client (39); killing... * daemon started successfully

[@natsukashinobu2019]

Max lee can you help me When I go to fastboot in my phone it wont show on the other devices My phone is j7 core

[@Kinseliplier]

every time I try this on my Mac it moves fastboot out of my downloads folder automatically and fails the boot loader unlock command.

[@assisjunior3953]

Mazamera didn't suffer more than me to find a video very good like that, many thanks bro.

[@KaanStyle]

thnk you very much

[@fumesolo6709]

Big fann

[@omniversal4739]

Thanks for the tip, if I ever need to bring my android for a repair, I'll never tell them that it's rooted. Usually, I fix everything on my own, which is the cool part of android. If you have an iphone and something happens with your device, yer f'd.

[@Matt-pi2vc]

Omni Versal not true most problems with iOS can be fixed with a hard reset or in really bad cases, a DFU Restore

[@lamurcribb985]

Lol not true

[@amarelahi7570]

I actually messed up ipod after jailbreaking it like it was stuck at the apple logo and fixing it was so easy

[@amarelahi7570]

@Gold Movies which phone do you have?

[@santaclaws1508]

Even today, i still don't understand why people use IPhone...There is no FREEDOM!!!...too bad...too bad indeed

[@ominkan3129]

Thank you so much the (fastboot flashing unlock) worked and no one else has revealed this. Thanks again.

[@jj1a2]

Hi Max, great to see it's so easy with all the right tools... a quick question... do you have a recommendation on some budget android phone that is root friendly below $150?

[@mikehawk287]

One word, Xiaomi. Edit: if you specifically want to root it, then just look for any old flagship phone you like with good hardware for that price. LG phones are cheap now, and they have excellent hardware.

[@jj1a2]

@@mikehawk287 Xiaomi in my experience is the WORST choice... first of all, it is unreliable, second, it can take 3 weeks in some cases...

[@fatkid6383]

Max Lee, always innovating, always!

[@odue]

Battery saver: skip to 3:05 for start

[@carlosgalvez1763]

Hi Max, awesome video buddy, I have a little question, I have a Samsung Galaxy Note 5 from Verizon, SM-N920V, I would like to root it, but before I do so, I want to make sure if it's even possible. Do you think it is possible, there's a way to do it? Or it definitely can't be rooted whatsoever? I'll be looking forward for your reply bud! Thank you in advance

[@radasfck]

After a whole a day of research how the F..to unlock my old xoom (Im doing this for my first time)Ive finally come to an end. It was a frustrating day, but you saved me. THANK YOU : )))

[@danejdobersek9340]

hi when i type fastboot flashing unlock i get remote: check password failed ! how do i fix that ? thx

[@kezin395]

It's not popping up In device manager

[@enzo2good]

ssamee

[@kelvinwilson9217]

A very nice concise guide and well explained. Alas, the Umidigi One Max is still not supported by TWRP, so rooting shall have to wait.

[@kelvinwilson9217]

@Avery R Thank you for the reply, and I will try that.

[@blakeklunder9643]

what would you recomend if the phone gets stuck at powered by android after the adb reboot bootloader command? to further clarify, when i executed command the phone rebooted immediately and went to "powered by android."

[@charleysvintageantiquewebshop]

I am in my device manager I see that Android composite ADB interface but I have not been notified in my phone about the laptop or to allow

[@GRAVESAUDIO]

figured it out! type: adb kill-server followed by adb start-server in CMD (on device) Settings -> Developer Options -> USB Debugging -- switch off and on [Windows] Make sure you have the proper driver (your best bet is Universal Adb Driver by Koushik Dutta -- will handle any device)

[@MarkusMaal]

The reason unlocking the bootloader usually performs a factory reset was actually originally designed to protect your data. That’s because back in 2010s, Android didn’t encrypt user data, so unlocking without factory reset would just bypass any screen lock and allow the thief to see your personal info. The "OEM unlocking" option under developer options was actually originally supposed to temporarily disable this factory reset protection (or FRP for short), so that unlocking wouldn’t erase your data, but it would re-enable itself after reboot if you didn’t unlock bootloader. However, on modern devices, which encrypt data, there isn’t much reason to factory reset, so companies do it just to annoy the user (if you know of another reason, let me know).

[@Jon-ns8ly]

Hello! I do not see a message on my Oneplus One device asking to “Unlock bootloader”, it stays on fastboot mode screen and does nothing.... please help. Using Mac OS

[@personarebellia6775]

I have tab 4 SM-t231 but cannot flash it. I have several custom roms but always error and it says "E : error footer. and E : signatured verification failed". I used TWRP_3.0.0_Degas to flash directly to phone. When I used ODIN it doesn't work, cause ODIN need TAR or IMG file (many custom rom have zip extension). GoogleM, Octagon etc there are same error message (using TWRP 3.0 Degas).. Please enlighten me Mr Lee. Thanks.

[@jericmarts2798]

hi! my phone is oppo a37fw when i type in "adb reboot bootloader" in the cmd my phone just restarts and can't proceed to the next step, I really need help

[@basantabastakoti9170]

the same is happening with me

[@wjjd]

Your phone is not supported by this method

[@iwanjawa7170]

I tried, fastboot oem unlock, fastboot flashing unlock, fastboot orm unlock-go,.. but it says "failed unknown command. Also I used many other tools too but failed :(

[@bnongsiej6743]

Same bro😪😪

[@jcv17]

Whenever I click Yes to the option it always Fail. Help please I use Nokia 3.1 Android version 9. The CMD also says FAILED (remote: ' Unlock operation is not allowed') I also extracted the .zip file but there is no file folder that is called image angler opm.... like you have in your video. will i need to look for it and download it separately?

[@fragilefrenzydev1832]

OEM Unlock toggle not appearing, adb reboot bootloader resatrted my device cant continue

[@parantezadam6293]

It is in developer settings.

[@John-jj8jc]

Hey, i need help with this. When i type adb reboot bootloader it just reboots in the OS. I have the samsung galaxy A8 2018

[@crepper0extreme826]

Same in LG k10 Power

[@crepper0extreme826]

HEEEEELLLP

[@Musica-Lyrix]

hello man i got this result: fastboot flashing get_unlock_ability ... FAILED (remote: Not implement.) finished. total time: 0.002s this mean cant unlock?

[@scattagain]

I dont know if this problem is because of the phone or computer, But whenever i try to do anything related to the bootloader, it just hangs at "..." ex. It hangs at "fastboot oem unlock", "fastboot oem ", and "fastboot flashing unlock"

[@joonas5946]

When i type cd fastboot, it keeps saying "The system cannot find the path specified

[@costin88boss74]

try bootloader maybe. cd means going in a directory, which fastboot is a folder located outside of available storage/emulated/0 (or which is yours) you can go in.

[@randomkid169]

ma fastboot dont downloading it says Please wait 5 seconds for the download link to appear below.

[@Runic_]

use inspect element

[@HoneyBee_1201]

Imma save this for later and you just earned a new subscriber.

[@HoneyBee_1201]

@ASTROTHUNDER 👊 you to man!!

[@HoneyBee_1201]

@ASTROTHUNDER exactly

[@wiwlarue4097]

Hi there Max! I have an old galaxy mega 6.3 in a good shape at my disposal and I want to put it to use. The rom is from 2013 and I decided to put on a new one but it's missing oem unlock toggle and none of the methods I've found and tried worked. Do you or any of the dudes you know have any idea? Android threads do not race this model anymore :)

[@babiboib7]

+Max Lee Awesome info video, glad to see you are feeling better👍

[@JMcGregor01]

This is exactly what I needed 👍🏾 thanks

[@nevinkuser9892]

My new Realme x50m says "This phone model does not support in-depth test." In depth test is the app needed to unlock bootloader for realme phones. Any idea how to get around this? I'm completely stuck.

[@joeydelmarsjr.646]

i have samsung tab e 8in and i see the device under ADB devices but when ever i send a FASTBOOT command nothing happens it just says waiting for any device. and i already used OEM unlock from the developer menu. when i use the ADB reboot bootloader it restarts the devices but wont enter the fastboot mode

[@makhailminnis8274]

5:03 is when he predicted the yadi yadi yadi megan stalllion

[@mrefusana3077]

how can i root my phone: TECNO F2lite. i have tryed many ways to root it but it's not working, please i need ur helpe

[@benjaminnavarrete5150]

im on lg stylo 5 LM-Q720PS and ive followed all the steps till we get to the command prompt. after cd fastboot to adb reboot bootloader and it says error: no devices?emulators found. what do i do?

[@iljavandam229]

after i give the command 'fastboot oem unlock' i get an error oem unlock is not allowed? and i dont find the setting in dev settings? what's the problem? plz help ( i have lenovo zuk z2)

[@Eli-zo5mw]

2:30 I have a galaxy s8, do i still need to watch the video or can i just go straight to rooting?

[@cronos5784]

same

[@cronos5784]

but idk

[@xeroth4415]

when i do fastboot oem unlock or the other option it says "waiting for any device"

[@FardinMirza]

Did u get any fix of that?

[@jeremiah2717]

@@FardinMirza download ADB driver for your device. if it still doesn't work, manually install the driver in device manager

[@FardinMirza]

@@jeremiah2717 yep i got it working by some fastboot driver thingie but yeah it worked when i installed it on the device manually

[@rashishukla1976]

5:44 My device manager doesn't shows adb interface installed.... I am a Noob at this but still i have gone through each and every step properly. What should I do ? May be my phone brand is way too old for this.

[@levil4012]

Would u have ANY concrete instructions on how I could install the international software on my TMobile branded OnePlus 8? I've already unlocked the bootloader

[@bertangina]

Mine said FAILED (remote: 'unknown command or device is lock') Finished. Total time: 0 wHAT do i do?

[@AlexanderHate]

mine either

[@AlexanderHate]

did you found any way for that?

[@datguyomari4215]

everytime i press enter on adb reboot bootloader it restarts my phone and takes me to my lock screen so that boot screen on the phone doesn't pop up my phone is a T-Mobile Revvl

[@the-moon161]

Try shutting it down then plugging it into your pc and hold power button and volume down.

[@My_man_G_UK]

A bit of help @maxlee please. Installed boot loader but my pc says there's no driver for it? (Code 28). PC - windows 7. Oneplus one phone. Ermmmm?? 😥

[@-AnyWho]

is rooting or unlocking the boot-loader safely possible with Verizons moto z2 play? (XT1710-02) ... i was able to use it on T-mobiles network with there sim without any issues ... i do know they planning on releasing 9.0 pie eventually when they get around to this area so it probably wouldn't be a good idea to go to another ROM like linageOS I'm guessing ... any thoughts on any of this?

[@ethanpillay9063]

When I start up the bootloader that screen doesn't show up it just gives me the power on screen and stays there

[@isrral1583]

me too

[@extraordinaire4807]

same here

[@eggsploiter6310]

when i enter the adb cmd it restsrt then it just charging

[@summwaw]

enable usb debugging

[@cilleshaner4092]

I have a Samsung Galaxy Tab A 10.1 in. 32GB that I got from my cousin. He didn't wipe it before had and when I tried to do the hard reset it tells me in the setup phase that an unauthorized reset has been attempted and to enter the google account to continue. My cousin won't give me the account so am I screwed? Thank you

[@xxxgpakos6237]

FAILED (remote: oem unlock is not allowed) finished. total time: 0.005s please help

[@iwanjawa7170]

I also don't work :(

[@unonice]

Max Lee .. lol , I still have my Nexus 6P too .. lol .. 👍🏾👍🏾 unlocked the bootloader yesterday and flashed June Factory Images , adb command prompts 👍🏾👍🏾

[@BIGMACMCDONALDLEE]

Nice, I got mine out of the garage too, installing Resurrection Remix atm.

[@bobby5138]

One plus T-Mobile at cmd prompt fastboot oem unlock still says Flashing unlock is not allowed. So I am at a standstill. This is a one plus 6t without the oem unlock due to the fact they don't allow it with T-Mobile until completely paid off. Please help!

[@remkun0545]

do i need to install the adb driver eventhough i have samsung driver already installed at my pc? sorry for the shtty question : /

[@leoceo1]

All my adb drivers are up to date i think. I am on Samsung Galaxy Tab E SM-T377W. It simplly doesn't load into the bootloader. It restarts with Android's OS. I'm running Android 7.1.1

[@John-jj8jc]

Same, i dunno how to fix this

[@sharashchandraudupa5241]

Bro check its processor it may be Exynos processor, if yes bootloader unlock will be done via ODIN

[@vanLovely]

same

[@jcarling42]

Samsung phones are the easiest phones to root and I've not bricked any or never had any problems rooting Samsung Galaxy phones! I have not been so lucky with other brands of phones!

[@sufiyanajmeri5993]

my screen says "waiting for any device"

[@ravagef]

Sufiyan Ajmeri YO WE NEED ANSWER ON HOW TO FIX THIS

[@Steve63115]

Good luck... He won't answer...

[@ayayayamalittlebutterfly834]

@@lofiel955 what happens when you root ur phone.

[@adoboing]

@@sharashchandraudupa5241 thanks so much!

[@bedoakgun]

Android don't opening. Device's screen says FASTBOOT MODE.

[@davidrivera8103]

I'm trying to unlock my Moto G6, but it seems to be asking for an unlock code when I run the command. Example results after running fastboot oem unlock command line... (bootloader) fastboot oem unlock [ unlock code ] OKAY [ 0.003s] Finished. Total time: 0.003s command line...

[@desikuri25]

Hi, i accidentally erased my P30 Pro and lost everything. i have been trying to get some videos back (car insurance requires my dash cam footage) that i save on the phone but now have lost. I have tried all different ways to retrieve the video but nothing has helped (downloaded numerous apps and they all say 0 videos found). Can you please advise what i can do to get these 2 clips back?? Any help and advise would be appreciated. Thank you

[@_Toxicann]

when i try fastboot oem unlock or fastboot flashing unlock... the CMD just freezes on < waiting for any device >... What's going on!!!

[@SaiBabaEXE]

same here bro

[@nickytwe9813]

same as me bro

[@aslan2010]

Damn im not alone

[@sulfurnitride]

@@aslan2010 is it the android 8.0 aka oreo

[@rahimbasal5940]

Try adb unlock bootloader

[@haz5248]

7:55 its stuck on waiting for device plz help

[@sudhanshu8073]

Same problem we have

[@michihoang3480]

@@sudhanshu8073 check for latest drivers or windows updates

[@Void-ff1jg]

after adb reboot bootloader my phone turned off and booted to downloading... Do not turn off target is this a problem?

[@SuperFanBoy61]

Hi I have a PREMIER PRO LTE im trying to install TWRP For it but my phone seem it doesnt have a download mode or nothin do you know how to install download mode on it or something i need help please

[@fissionplane32]

Windows eleven?

[@carup999]

Does this method work for Huawei devices? Tank you.

[@nororlol4life819]

Huawei phones are factory locked with a passcode

[@amanaidx]

Will this work on my Nokia 2.1 running Android 10 go? In Developer Options the OEM Unlocking tab is greyed out and cannot be selected.

[@dropy5750]

it says

[@yeltsinr381]

Same! I heard that it means it's ready for custom ROM'S. I tried flashing a new ROM but it won't let me.. i'm losing faith lol

[@defacube]

Why does it wipe data??

[@neiojohnmaranan]

It will reset your phone

[@user-rs6bg5jy3p]

You ever take a dookie and not wipe?

[@MatejaMarinkovic-yb6ko]

Late reply, sorry. I know it doesn't matter anymore. When you unlock bootloader device security functions can't work and that means that your data can be exploited (someone can hack your phone). So their way to protect your data is to erase them. Stupid i know

[@returnsatushop]

because it wants you not to keep it because you are installing third party roms and some might not be safe

[@daveriggs2411]

When you say the process will erase everything on the phone do you mean that the device will be completely empty or do you mean that everything I have entered and installed will be erased?

[@Kinseliplier]

i got to the part where you type adb reboot bootloader in cmd and that command dose not work for me. for me it says thats not recognised as a command. whats the comand for windows 10.

[@AjdinM5]

How to fix "waiting for device"?

[@BIGMACMCDONALDLEE]

make sure driver is installed correctly, check device manager.

[@wolfhound905]

I have installed drivers correct and mine still says "< waiting for any device >"

[@adi331]

try unplugging the phone when in the boot menu and pluging it back in. then execute *fastboot oem unlock*

[@henriquemagalhaes3062]

HI there , just try the above methods, but then when on terminal i get the message "waiting for device" Any suggestions?

[@kp5736]

HELP! IT SAYS: "adb server version (32) doesn't match this client (40); killing...", so that does this means i cant load to bootloader?

[@abtruckdriver]

same problem here, you ever find out how?

[@JLocke-mm3rq]

I have a zenfone max with 6.0.1 and there is no option for "oem unlock", therefore the "fastboot flashing unlock" command does not work. Please help, I really tried almost everything

[@mariunfernandez4560]

If i turn on OEM UNLOCK I CAN ROOT MY PHONE

[@koreanssj9413]

Mariun Fernandez oem unlock only allows you to unlock your bootloader

[@Ducxy]

@@koreanssj9413 Which allows for root

[@aonodensetsu]

@@Ducxy which you still need to do, just the options doesn't do anything

[@jemb710]

CMD SAYS: "WAITING FOR ANY DEVICE"

[@glenforddalyjr]

Same here

[@handlesrtwitterdontbelivethem]

if i plug in android device alcatel A10 10 tablet is not showing it and not poping me op even i allow usb debugg

[@starsoftluna9663]

enable your developer mode first to connect to your PC

[@jemb710]

@@starsoftluna9663 I've tried every back then, even your suggestion. But I've already solved it (don't know how). Thanks anyway!

[@AccordzDIY]

@@jemb710 what did you do? im still having that problem

[@801oap]

I still don't see abd interface after replugging in the phone. it is a motoG3. followed all previous instructions and downloads are on PC windows10. any advice?

[@alextaylor9961]

did exactly as says in your video but says abd is not recognized as an internal or external command operable program or batch file how can i fix this ??? want to root my phone so i can back up save files for fft war of the lions please and ty im using an alcatel fierce one touch 5049z

[@BatfinksWings]

fastboot oem unlock.

[@BIGMACMCDONALDLEE]

yes in the simplest terms, but did you know newer phones like Pixel 2 use fastboot flashing unlock instead? You get B+ for the effort.

[@shafiisigera]

Those few phone meaning "huawei"

[@BIGMACMCDONALDLEE]

No, Huawei actually have their own bootloader unlocking website, but they never update it and lags behind a few months.

[@Aditya-dc6sl]

sir does it work with huawei devices cause they remove their bootloader unlocking website

[@shafiisigera]

It doesn't

[@ray495903314]

i think my zte one is one of those few z899vl for the specific model

[@mohammadshaikh6894]

@@Aditya-dc6sl Bro Do You Know How Can I Unlock Without Tye Code?

[@tatordirect4632]

After adb reboot bootloader goes into downloading fine. Then fastboot oem unlock hit enter its a note 3.. When it goes into download mode its no longer in device manager. tried windows 10 and 11 same thing. Help if you are able. Thanks

[@ADHTube]

I have an LG V20 that i own and I want to use for vlogging. Will this work for me and will it remove the Verizon splash animation?

[@BIGMACMCDONALDLEE]

Alright guys, this is just PART ONE of series of videos I am making, I will also have bootloader unlock tutorials for any brands like HTC or Huawei that will be linked to this video. Also please read the full article before you leave a comment for supported/not supported devices: highonandroid.com/android-root-101/how-to-unlock-bootloader-on-any-android-android-root-101-1/ I am also writing a new book called, "Android Root 101", and this is the very first chapter of it. I spent a lot time making this video, so please, constructive comments on Android related, it would help me make better tutorials. I am going to make about 50 videos of this new series, thanks for the support, as always, "stay HIGH on Android!"

[@leonelferreira_1]

Under "Other Devices" it says ADB INTERFACE, i then unplugged my phone and plugged it back in, but it didn't show ANDROID ADB INTERFACE the way it showed up to you, and the ALLOW USB DEBUGGING DIDN'T POP UP ON MY SCREEN PLEASE HELP!!!!

[@orenvungolotha5708]

My mi note5 pro got stuck in start up logo and freez i tried hardset it disnt work, downloaded miui flash tool, stock rom tried to flash but it says fastboot lock.error, i didnt registar on mi account as well. Need help

[@justinhernana.gonzaga1119]

Hello, please help I'm using google pixel i wanna downgrade my phone from android 10 to android 9, but the OEM thingy is greyed out and it says contact ypur carriers.

[@asparagustree7896]

In the video you said that AT&T cannot be unlocked but the website says that exynos come unlocked. If I have an AT&T phone but I have exynos is my bootloader locked or unlocked?

[@matthewtull]

So, how do you do this on an OPPO device? They have disabled access to the bootloader by disabling fastboot mode. It only reboots the device. Is there no one who knows how to get it done on OPPO?

[@gynoscide]

after i typed the fastboot oem unlock it only says okay, is it dine, then there was no formatting that happened on my phone. does it work?

[@nugettynoob7838]

Help my phone has the unlock bootloader options but when i press Yes it says unlock failed.... returning to fastboot in 3s (but my fastboot is frozen) any help?

[@heisenberg6317]

I swear, this is first youtube tutorial what looks legit. most of tutorials on KZbin (especially Indian videos) looks fake but this looks pretty legit

[@youcantakeittothebank342]

i typed this "./adb-linux reboot bootloader" in ubuntu terminal and get unable to mount ALCATEL ELEMENTS unable to open mtp device "[usb;001,033]"

[@HitmanEvz]

I get into fastboot mode and both commands to unlock give me "unknown command" error :( WHY!???? edit: Also device becomes unrecognized (!) in device manager once in fastboot mode HELPMEEEEEE!!!!

[@thebeast1783]

my blu phone says fast boot up at the top left but anytime in fast boot when i enter fastboot flashing unlock the cmd just says waiting for any device. what can i do to recover from this?

[@tristonmccalip9238]

when i do the command to open my bootloader all it does is takes me to a giant baby blue screen thay says "DOWNLOADING please do not turn off target"

[@devensays]

My oneplus X has no os. so i cannot go to developer options to unlock oem. i can go to fastboot mode. but i cannot unlock oem "(remote: oem unlock is disabled)" i can't even flash twrp "(remote: Device not unlocked cannot flash or erase)" i have used MsmDownloadTool V2.0 also but still i am stuck at oneplus logo while turning on the phone is there any way i can get the phone back?

[@carlogiorgelli8767]

when i'd say adb reboot bootloader, my device had restart. Why? (my device didn't show the screen with the android robot)