yashsingh1/xdaforums huggingface dataset:
[Philips, Sony, TCL Android TV] majo3000:
Hello.After last update on my 65PSU with AndroidTV 9.0 , its not anymore possible to switch directly to HDMI1 or HDMI2 via IR Codes from my Remote (RCOID app Android).

I tryed with Buttonmapper and Kecodes from here : https://elementalx.org/button-mapper/android-key-codes/

But i have no luck because the important one HDMI-1 to HDMI-4 are not activated on TV....

After long search i found a thread where you can per ADB command switch to HDMI-1 HDMI-4 directly via command :

Original Thread found here : https://community.home-assistant.io/t/android-tv-hdmi/234411/27

So i installed adb remote on myphone and testet this command ....and it works like a charm with my philips TV.

adb shell am start -a android.intent.action.VIEW -d content://android.media.tv/passthrough/com.mediatek.tvinput%2F.hdmi.HDMIInputService%2FHW5 -n org.droidtv.playtv/.PlayTvActivity -f 0x10000000

HW5 = HDMI1

HW6 = HDMI2

HW7 = HDMI3 and so on....

is it possible with buttonmapper to send this ADB codes that i can remap my buttons to direct HDMI switcher buttons on my remote ?

i tryed with buttonmapper §shell

but shell doesnt work....i am linux newbeee.... perhaps someone can help to get this work....
[Philips, Sony, TCL Android TV] MediaXDA:
I am searching for this as well. I am now trying via termux + termux widget add-on. I am connected to my TV over ADB in termux. I am not getting to switch to an HDMI port yet.

Switch to HDMI 1: should be possible like this but no succes yet

adb shell input keyevent KEYCODE_F6

After this the next goal is a short script that can be started from a widget icon on my phone's homescreen or even from my TV's remote control with button mapper
[Philips, Sony, TCL Android TV] majo3000:
The android Keycodes didnt work for me.

but the code above in my 1 Post did Work via remote adb shell app on android.

its a shame that phillips deleted the option to siwtch discret hdmi1.
[Philips, Sony, TCL Android TV] luksson:
Has anyone found a sollution to get this working with button mapper?

adb shell input keyevent KEYCODE_F6 and

adb shell am start -a android.intent.action.VIEW -d content://android.media.tv/passthrough/com.mediatek.tvinput%2F.hdmi.HDMIInputService%2FHW5 -n org.droidtv.playtv/.PlayTvActivity -f 0x10000000

work for me from the computer.
[Xiaomi Poco F2 Pro (Redmi K30 Pro) Questions & Ans] as_73:
Hello,

did anybody here use Tasker with the Poco? Have you a running profile to switch on AOD only by incoming messages (AOD_ON) and AOD turning off (AOD_OFF) when the message is read/checked?

ADB seems to work, testing the tasks will show a green light for okay, but the display stays off.

Kind regards
[8525, TyTN, MDA Vario II, JasJam General] yinx:
Does somebody know the difference between the settings->connection->Beam

and the Beam option in communication manager?
[Nubia Red Magic 3 Questions & Answers] John_Ryan:
I'd facing problem,, My laptop is on Win 7,, When phone idle (ON), its able connect to my laptop and i used comment "adb devices" in commemt promp, and its show my device (Phone),, When i used comment "adb reboot bootloader", its done and my phone reboot to bootloader,, The problem begun here, when phone is on fastboot mode, i used comment "fastboot devices", its show nothing (Meaning my phone not connect to laptop)

Of course because that proplem i can't flash TWRP, Magisk and Gapps,,

If someone here can find out the way to fix this, i do really thanks for helping,,

I'm using Nubia Red Magic 3,, And i do TWRP, Magisk and Gapps since several years (2018),,
[Nubia Red Magic 3 Questions & Answers] hoichemgio9x:
Check driver in device manager. Have fun!
[Samsung Galaxy J2 Guides, News, & Discussion] Deleted member 9635294:
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
* Also, I do not have this device, this is not tested, so this will likely not work.
*/

I do not have this device, this is not tested, so this will likely not work.

​

This lists a posible way of how to install android 11 on J2 core, both 2018 and 2020 (J260X).

Step 1: Unlock bootloader

- Delete all Google accounts and samsung accounts

- Go to settings

- Go to About Phone

- Go to Software information

- Tap Build number 7 times to activate developer options

- Return to settings

- Select developer options

- Activate OEM Unlock

Step 2: Install TWRP

- Download Odin v3.13.1

- Download and install Samsung Drivers (if you have them installed you can skip this step)

- Go to settings/Developer options and enable OEM unlock (If you don't see developer settings, go into Settings/About phone/Software info and tap "Build number" 10 times to show Developer options menu)

- Download TWRP_*.tar

- Switch off the phone

- Use Home+Volume Down+Power to enter Download Mode and connect the device to usb

- Open Odin and untick autoreboot in "options" tab. Also make sure that your device is detected

- Put TWRP_*.tar.md5 file into AP tab

- Click Start

- When Odin shows "PASS", take your device in hands, disconnect the usb cable and press simultaneously the "Home" + "Vol. Down" + "Power" buttons until the - downoad mode disappears

- At the precise moment the screen becomes black, immediately release the "Vol.Down" button and press the "Home" + "Vol. UP" + "Power" buttons during 10 to 15sec to forcefully enter TWRP

Step 3: Disable RMM Lock and Flash Magisk (Both mandatory unless brick your device.)

- Move RMM-State_Bypass_Mesa_v2.zip, MakeMeSAR.zip, Magisk.zip and ROM zip into your device by USB. (downloads below)

- Flash the zips. You can do that at Flash button.

- Reboot

Downloads

RMM https://androidfilehost.com/?fid=11410963190603859122

MakeMeSAR https://androidfilehost.com/?fid=4349826312261728344

Magisk https://github.com/topjohnwu/Magisk/releases

ROM https://mega.nz/file/5A5BwA7K#qa57DPRJfnLEGkF1y7fvU9Bo6-fJgl3P5ublTXBeOoc

TWRP http://www.mediafire.com/file/gn4x215qd8abytn/twrp_j2corelteSM-J260FDS.tar/file
[Samsung Galaxy J2 Guides, News, & Discussion] AadikarBhandari:
Offtopic, but can you do similar for j2 (2015?) J200H with sc chip.
[Samsung Galaxy J2 Guides, News, & Discussion] Deleted member 9635294:
This tutorial will be fixed soon so that it could work.
[Samsung Galaxy J2 Guides, News, & Discussion] Deleted member 9635294:
Nope as you need android oreo out of box to do that.
[Samsung Galaxy J2 Guides, News, & Discussion] AadikarBhandari:
I see. Any plans for Android 10/11 port? Perhaps making own rom based on Aosp will be faster. A year atleast.
[Samsung Galaxy Note 10+ Guides, News, & Discussion] Nmc_alves®:
Fota update

ADB-method:

1. Download SDK platform tools from here https://developer.android.com/studio/releases/platform-tools

2. Extract them on your desktop.

3. Inside the extracted folder put the update.zip

4. Inside this folder, holding left shift, right click the mouse and select "open command prompt here". The command prompt will open.

5. Shutdown the phone.

6. Holding power+volume up buttons, enter into recovery mode.

7. Select "update via ADB". (you scroll down using the volume buttons and select using the power button).

8. Connect the phone to the PC using original samsung USB cable.

9. In the command prompt run the following command:

./adb devices

10. Wait to see that the daemon has started and that your device is found.

11. If you device is found, run the following command:

./adb sideload update.zip

The update process will start. You will see a percentage counting. First it will verify, then patch etc. Do not move the cable, disconnect the phone or power off the PC.

Once the process is completed (it takes some time) the phone will boot itself, update the apps and log into your home screen.

SD-card method:

1. Download the bin file and rename it to update.zip (by going to file options in win10 you can select to view the file extensions. This makes the renaming process much easier and safer, and avoids renaming the file to update.zip.zip)

2. Copy it to the root directory of your SDcard.

3. Shut down your phone.

4. Hold simultaneously Power+volume up buttons to get into stock recovery.

5. Using your volume keys navigate to "update via SdCard" and press power button to select it.

6. Again using volume keys navigate to the file "update.zip" and press power button to select it.

7. Update will start. Leave it till it completes. It will take some time.

8. Phone will reboot by itself and load android.
[Samsung Galaxy Note 10+ Guides, News, & Discussion] Nmc_alves®:
Update link rename file to update.zip

http://fota-s3-dn.ospserver.net:80/firmware/AUT/SM-N976B/159dd8da812d4a68959257222e553f93.bin?px-hash=&px-wid=27120201230-WCB69354216&px-wctime=2020-12-30%2010:37:53&px-unum=&Policy=eyJTdGF0ZW1lbnQiOiBbeyJSZXNvdXJjZSI6Imh0dHA6Ly9mb3RhLXMzLWRuLm9zcHNlcnZlci5uZXQvZmlybXdhcmUvQVVUL1NNLU45NzZCLzE1OWRkOGRhODEyZDRhNjg5NTkyNTcyMjJlNTUzZjkzLmJpbj9weC1oYXNoPSZweC13aWQ9MjcxMjAyMDEyMzAtV0NCNjkzNTQyMTYmcHgtd2N0aW1lPTIwMjAtMTItMzAlMjAxMDozNzo1MyZweC11bnVtPSoiLCJDb25kaXRpb24iOnsiRGF0ZUxlc3NUaGFuIjp7IkFXUzpFcG9jaFRpbWUiOjE2MTQ1MDg2NzR9fX1dfQ__&Signature=NRrOa1nkPI2IZ3YqTgiJAvKtlRqQUOEmLRujAm6OvwlYXgfyYjPCEj-S~gyN4XF9cd3z59h5uspUI6VAgb~vM0EctBhkA5PhpbRatK-0qqoPe-~vnxefhWAZi3nZQd6TwgoBKWqxEAB9Qb9Tx1uh6ppb5hyWgolIOVAISyYSkxLkxa8JTk0apCWFZ1-UgVewKhuWO5qkA0-T9BdlyEgu2pouhE2KjkdQZowTtTnANpbIlBy3Ijv9ZC8Vao89L9ZxKSSstTLigSedt-S7PI6C0r6IR0WCOUW-P8t9y~gBqLYXZSs-MLIR0bKsEmLJvOiDyrARyt~JTcsZpc44et8Q8g__&Key-Pair-Id=APKAIGLPRCHE2BH6RZLQ&px-nb=UGtezEZ854jbmFcvWGxLEA==&px-nac=PUs1xR8SwAJEBy6urodh3aeykKa+6xeY7jzcFqWBZZs=
[Samsung Galaxy Note 10+ Guides, News, & Discussion] Nmc_alves®:
In this thread, You can share the Mega-Links of new firmware's (

OFFICIAL STOCK) for the Galaxy Note10+ 5G (so: NO CUSTOM ROM's and/or ROOT-talk)...

How to flash firmware to your phone:

1. Extract (un-rar) the firmware file (i.e. to folder c:\Odin) ***

2. Download Odin v3.13.3

3. Extract Odin ZIP file (i.e. to folder c:\Odin)

4. Open Odin v3.13.3

5. Power OFF your Note10+

6. Reboot Phone in Download Mode (1st plug-in USB-cable to your Note10+!!!), push Volume Up + Volume Down buttons, while pushing them plug-in USB-cable to PC

7. Wait until you get a blue sign in Odin

8. Add the firmware files to their designated slots

9. Make sure re-partition is NOT ticked

10. Click the start button, sit back and wait few minutes

Download the Samsung firmware for the Galaxy Note 10+ SM-N976B with product code AUT from Switzerland. This firmware has version number PDA N976BXXU6ETLL and CSC N976BOXM6ETLL. The operating system of this firmware is Android 11 , with build date Thu, 24 Dec 2020 07:32:23 +0000. Security patch date is 2020-12-01, with changelist 20606106.

Model	SM-N976B
Model name	Galaxy Note 10+
Country	Select countryAustralia (XSA)Australia (Optus) (OPS)Australia (Telstra) (TEL)Austria (A1) (MOB)Baltic (SEB)Croatia (T-Mobile) (CRO)France (SFR) (SFR)Germany (T-Mobile) (DTM)Germany (Vodafone) (VD2)Hungary (T-mobile) (TMH)Hungary (VDH) (VDH)Italy (TIM) (TIM)Italy (Vodafone) (OMN)New Zealand (Vodafone) (VNZ)Romania (ROM)Spain (PHE)Spain (Movistar) (XEC)Spain (Vodafone) (ATL)Switzerland (AUT)United Kingdom (BTU)United Kingdom (EE) (EVR)United Kingdom (Vodafone) (VOD)United Kingdom / Ireland (XEU)
Version	Android 11
Changelist	20606106
Build date	Thu, 24 Dec 2020 07:32:23 +0000
Security Patch Level	2020-12-01
Product code	AUT
PDA	N976BXXU6ETLL
CSC	N976BOXM6ETLL

Androidfilehost link

https://www.androidfilehost.com/?w=files&flid=317674
[OnePlus 8 Pro Questions & Answers] RoyAndroids:
Hey guys, I am new on OnePlus . Have the Oneplus 8 Pro with official firmware. I see that OnePlus have beta firmware available. So my question is what to do. Is the beta safe and do you guys prefer beta above official? For example , this beta build is from December 29th.. yesterday ...

And can I go back to official after installing the beta?

I know it sounds a bit nooby, but this is my first OnePlus. Was on Xiaomi and Samsung before..

Please advise...
[OnePlus 8 Pro Questions & Answers] RoyAndroids:
I mean this
[OnePlus 8 Pro Questions & Answers] dlads:
It's completely safe and you'd be forgiven for thinking it was a stable release.

Just be careful when updating or reverting back to stable. One of the previous releases forced a wipe.

Very unlikely to happen again but that would be my only gripe
[OnePlus 8 Pro Questions & Answers] RoyAndroids:
So it's an updated version of the official, right? Like a pre official?
[OnePlus 8 Pro Questions & Answers] RoyAndroids:
What abouth OTA updates. Do I get OTA updates for the beta as well or do I have to install manually ?
[OnePlus 8 Pro Questions & Answers] dlads:
You'll get updates as new betas are released, personally I stick with stable, I prefer it.

Betas get new features which may or may not come to stable.
[General Questions and Answers] Mujahid Sons:
I want to root my device but I've got no experience doing it, and I don't want to brick it or something so please help
[General Questions and Answers] Tom_usborne:
Hi Mujahid, you need to follow the below steps to root your device:

Install Samsung USB Driver on your PC

Download root package on your PC

switch off your Device

Boot your device into download mode

Launch Odin Tool

Connect your device to PC (your device should be into download mode).

browse and add Root.tar files

finally hit the start button to begin the rooting process.
[General Questions and Answers] Mujahid Sons:
Where to download those files?
[General Questions and Answers] Tom_usborne:
You can google to download these files or browse on XDA Developers forum for your specific device model.
[Touch Diamond, MDA Compact IV General] TomHa:
I'm using my Diamond on my bike through a blue tooth connection to my intercom. Works like a charm - but when the phone rings, music (and GPS) sound is muted, and don't come back when the phone call is ended. The only way to listen to music again is to disconnect the blue tooth connection and start it up again.

Also when using GPS (Tomtom 7) it disconnect the phone call if there is a direction instruction.

Minor problems, but is there a work around?

[Solved]. I downloaded a program http://www.freewarepocketpc.net/ppc-download-btmusic.html

This does all what I'm asking for.....

My Diamond uses the latest rom version (1.93.7 something)
[Touch Diamond, MDA Compact IV General] pepitoalex:
How do you do ?

Hello,

I'm a new user with a Diamond: How do you do, to put the Tomtom sound on the bluetooth audio ? I'm using an Airoh W-Conn system.

I have a Diamond with a Orange France ROM, and my Tomtom 6.

Thanks in advance,

Alex.
[Touch Diamond, MDA Compact IV General] TomHa:
Don´t steal my thread ;-)

Please make your own thread.

If you have a problem with your Diamond, it is better to adress the problem directly. I do not have a clue for you. I just turn the gizmo on - and it works. You could read the manual to TomTom7. There is a section about Blue Tooth a.f.a.i.r.
[Touch Diamond, MDA Compact IV General] TomHa:
Use the program http://www.freewarepocketpc.net/ppc-download-btmusic.html

It will do the trick.
[Samsung Galaxy Note 20 Ultra Questions & Answers] skipper6875:
Hello, before UI3.0, when I cut or modify a photo, the Gallery App creates a NEW photo and leave the old one at the same place. But not now.

Where is the old photo now after modifing?

Not in the Trash...

Sorry for my english.

Tnx
[Samsung Galaxy Note 20 Ultra Questions & Answers] raul6:
now you have to specify to save a copy u under ... when editing. otherwise it just saves over the original
[Samsung Galaxy Note 20 Ultra Questions & Answers] Limeybastard:
Yep. They ruined it, was nothing wrong with how it was before one UI 3.0
[Android Stick & Console AMLogic based Computers] basimo:
Hello,

My ki pro starts up keeping the two blue and red indicator lights on, with the emission of a parasitic noise , the reception of the tuner is zero, I think it is a hardware problem, can you help me to fix that issue, many thanks
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
Hey everyone,

I just saw this news that the Android 11 open beta is out. Here's the link https://piunikaweb.com/2020/12/30/x...roid-11-public-beta-update-for-these-devices/

I'm currently downloading it now and I'll probably get a chance to flash it tomorrow. The file is 3.53 GB
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] sergio_sant:
Is it Global Rom?
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] sharif911:
I trust this site.wanna see some what features android 11 brings to mi 10t
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] dyepnoodle:
will it work on mi 10t pro? and is it Global firmware?

edit:

i was able to confirm it in telegram, it's MIUI 12.5 Android 11 but for china rom only.
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
Damn, so it won't work on global phones? I was going to flash it tonight to see

-----

I found a lot of info online about flashing global ROMS on xiaomi Chinese model phones, but I found nothing about going from global model phones to Chinese ROM... 🤷
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] vlubosh:
china
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] vlubosh:
no worries, you can flash it, but on MI 10T PRO is main camera broken.
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] Bampyre:
Any updates on miui 12.5 can we flash it on our global versions?
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
I'm just about to flash it in the next 30 minutes or so, I'm just backing up a few things first just incase it goes bad. I'll let you know soon
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] Bampyre:
Looking forward to this.i already downloaded the file. Just waiting for someone to drew first blood on this.
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
I'm still backing stuff up... It's taking forever, I've spent the last half an hour trying to get Titanium Backup to work, it kept on crashing and not opening. I've got it up and running now and just backing up apps. I've also gone into TWRP and backed up all the smaller partitions. There's a video here of a guy talking through the set up and installation (in some other language...)

-------------

edit - update

Installed and it's running fine. It thinks its the Redmi K30S Ultra, and a few things are in Chinese, it looks like I'll be doing some debloating, but otherwise it seems all good. Camera seems to be working fine

My phone is a Mi 10t Global (not pro)
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] calinorg:
Little offtopic - anyone actually tried to restore smaller partitions in TWRP after backing up? I've heard from some people that it doesn't work on mi 10t, and if you actually do break something you can't fix it?
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] Bampyre:
Can i install via recovery? Dont have a pc..

Mine's mi10tpro 8/128
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
I installed from TWRP recovery, it installs fine. I'm not sure about stock recovery, I'm guessing it would work. Someone mentioned above that the camera wasn't working correctly on the Mi 10t Pro with this build too
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
To be honest, this rom is a bit of a nightmare... There's so much crap, bloatware, and Chinese rubbish installed in it. I've spent the last day trying to clean it up and remove stuff.

Other than that it runs nice and fast and snappy. I'm just worried about how much data is being sent back to China to be honest.

I've found that xiaomi.eu have already released a miui 12.5 rom based off this build and they've apparently cleaned up a lot of the crap and it has google play store and services preinstalled. The thread is here https://xiaomi.eu/community/threads/20-12-28-29.59085/

I'm downloading it now, I have a feeling it'll be much less of a headache. I'll update once I try it out 😉
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] Bampyre:
How was the experience on the miui eu?
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] kage00:
Just finishing setting it up now. I had trouble initially installing it as it wouldn't boot (probably because I tried to avoid formatting data...) and the stock recovery that it flashed was in Chinese and TWRP wouldn't let me see the internal storage or flash anything... It was a bit of a soft brick and took ages to get out of...

It's up and running now and was a bit tricky to get it flashed. I had to do a few steps to get it running.

Flash the TWRP for our device then boot to it.

Format data and write 'yes' (this wipes everything, so back up first)

Reboot to recovery

*Then the problem was that I couldn't access the internal storage, so what I had to do was go to backup -> backup boot partition -> reboot into recovery, then I could access the internal storage and see the TWRP folder on internal storage and then copy files across...

Copy across the xiaomi.eu 20.12.29 rom and magisk 20.2

Flash ROM

I'm currently letting Google install backed up stuff before I go back and install Magisk.

So far the ROM looks nice, has google apps installed and none of the bloatware crap. I'd definitely recommend this ROM over the Chinese beta
[Xiaomi Mi 10T / 10T Pro Guides, News, & Discussion] NedrickFlanders:
This worked for me. Nice one!
[Touch Diamond, MDA Compact IV Themes and Apps] giangishanghai:
Hi all,

for those that like just few modification and not too many colors, i have made this Theme, Cyborg.

just copy manila files in Diamond windows folder, via Total Commander.

in att. you can find manila files in zip, and two sample of icons.

hope you like

nihao
[Touch Diamond, MDA Compact IV Themes and Apps] neptunes50:
Ni Hao. Looks good.. Ciao:rolleyes:
[Android Stick & Console AMLogic based Computers] salletv:
Hello

I have vontar X3

r View attachment 5172555

I have problem for use netflix i tested my account on phone or computer all right but whith apk tv android say :

=>Invalid email or Password.

And i go with chrome and same problem authentification

I tested with firmware Vontar x3 (202007)

So i change firmware for this

https://xdaforums.com/t/rom-mod-hk1...ranspeed-x3-air-bqeel-y8-max-amlogic.4157515/

Same problem and here i see that

https://xdaforums.com/t/safetynet-fix-google-update-march-2020.4063679/

But i can't pass out :

Magik Manager => CTS Profil (no good)

EdXposed Manager => i can't install framework

If someone can help me

And with my vontard can i see netflix ? And in with quality HD (1080) or ?

Sorry for my english

Thanx a lot
[Android Stick & Console AMLogic based Computers] ath156:
1. In most of the boxes you can see Netflix only in Standard Definition (not Full HD or 4K). Only in some certified boxes (like Mi Box s, Amazon Firestick etc) you can see Netflix in Full HD or 4K.

But you can install coreelec to an sd card and from there have Netflix in HD. You can make Vontar dual boot (first to coreelec and then if you want reboot to Nand-Android).

2. So if you want to pass "CTS profile" in Safety Net of Magisk just to use it for Netflix, you actually don't need it for that. You will still get Netflix in Standard Definition. If you want it for another purpose than I can tell you some things you can try in my rom.
[Android Q&A, Help & Troubleshooting] mpwaro:
Beim Installieren von twrp per adb läuft es immer wieder nur bis "Starting fastboot ... ". Fastboot erscheint jedoch nicht. Was habe ich falsch gemacht?

Moderator Edit for Translation.

When installing from TWRP via adb running it over and over again only to " Starting ... Fastboot not appear What. Have I done wrong ?
[Android Q&A, Help & Troubleshooting] Deleted member 1890170:
Do you mean

adb devices
adb reboot fastboot

doesn't work?

Do you have enabled OEM unlock in Android Settings Developer options and rebooted the phone afterwards?

Do you have installed on computer the Android USB Driver that is suitable to your device?