Mostly new android phone bootloader is locked, follow the instruction below step by step to unlock it before start any installations process

WARING!! : All data and information on the phone will be erase

Enable OEM unlocking 

1. Open Settings application on the phone and go to About phone 

2. Continuously tap on Build number for 5 times until the popup shows "You are now developer" 

3. Navigate back to the main page of Settings and tap on System 

4. Select System --> Developer options --> enable OEM unlocking --> Enable 

5. Change USB options to Transfer file 

6. If required please give permission on the device to allow usb debugging.( System --> Developer options --> enable Usb Debugging) 

7. Navigate to platform tools directory using command below. 

   cd \full\path\to\adb\folder\
for example "cd c:\tools\platform-tools" for Windows 

8. Enter command adb devices 

9. The response will be the serial number of the device on the left and device on the right 

10.  If you are seeing  unknown or unauthorized  next to serial number  instead of device then go to point 6 and repeat the steps 

Enter FASTBOOT mode Method  

1. In  the command prompt enter adb reboot bootloader 

2. Type fastboot devices  and hit enter in the command prompt 

3. The response will show the serial number and fastboot on the same line 

4. Type fastboot flashing unlock in cmd and hit enter 

5. Once the device is in bootloader mode make sure you see that it shows device unlocked message in the last line of the screen 

6. If not showing device unlocked message repeat the steps on Enable OEM unlocking 

7. If its showing unlocked message follow the steps mentioned below INSTALL AZENQOS FIRMWARE 

1. Download Azenqos kernel for Oneplus device from the link in preparation step. 

2. Extract the 3 files in the zip file. 

3. Copy all the Files in to the folder that has platformtools  

4. Open Readme file in notepad 

5. Copy the command in the exact order mentioned in the Readme text file 1 at a time and paste it in the command prompt and hit enter 

6. Wait for few seconds(20-30 sec) and copy paste  the next command in the command prompt and hit enter 

7. Wait for few seconds (20-30 sec) and Type fastboot reboot 

8. The phone will reboot. 

1. Once the device is ON you will see Magisk app installed on the device. If the app is not there Download Magisk apk from here      <-------------------- click to download 

2. Install it on the phone 

3. Open Magisk app and if it ask to install "additional setup" just select "OK" and reboot the phone once 

4. Please update magisk to latest version if there are available 

5. Download busybox magisk module from here       <-------------------- click to download 

6. Download screenrecord_ex magisk module from here       <-------------------- click to download 

7. Download systemizer magisk module from here       <-------------------- click to download 

8. Copy all 3 files in to the device 

9. Tap on the modules icon at the bottom right insite the magisk app. 

10. Tap on Install from storage then select the busybox magisk module module file and wait until installation finished then go back to the modules screen. 

11. Repeat the step 9 to install screenrecord_ex magisk module and systemizer magisk module 

12. Reboot the phone 

13. Open Magisk and go to settings. Change superuser notification to "none" 

1. Go to release.azenqos.com

2. Enter Username azq   password azq 

3. Download AzenqosMobile-releaseXXXXXX_vXXX.apk

4. Install it on the phone

5. Open Azenqos apps and grant the supersu permission then activate the license

6. Azenqos is ready to use