Debloat the apps as mentioned below and reinstall them before upgrading android to prevent hard brick.

Download adb platform tools from google and open the extracted folder and click on adress bar and type cmd so that cmd opens in that folder directory only and after connection phone type adb shell in command and then use uninstall commands.

Enable USB Debugging in phone and connect put command= adb devices, to connect phone to pc then type= adb shell, and then:


⏩ UNINSTALL CMD ⏪

pm uninstall --user 0 [type package name]


⏩ REINSTALL CMD ⏪

cmd package install-existing [type package name]


⏩ DISABLE CMD ⏪

pm disable-user --user 0 [type package name]


⏩ ENABLE CMD ⏪

pm enable [type package name]

⏩List all system apps which you have un-installed
adb shell "(pm list packages -u && pm list packages) | sort | uniq -u | cut -c 9-"

⏩Re-install all uninstalled apps at once on a Linux machine
for i in $(adb shell "(pm list packages -u && pm list packages) | sort | uniq -u | cut -c 9-") ; do
    adb shell cmd package install-existing "$i" ;
done



☻ Apps=


com.heytap.market =App market
com.heytap.browser =Browser
com.coloros.assistantscreen =Smart screen/smart assistant
com.heytap.usercenter =Heytap Account
com.heytap.cloud =Heytap Cloud
com.heytap.themestore =Theme store
com.coloros.backuprestore =Clone phone
com.redteamobile.roaming =Oroaming
com.coloros.compass2 =Compass
com.google.android.apps.youtube.music =YouTube Music
com.coloros.systemclone =system cloner
com.finshell.fin =Finshell pay
com.facebook.services =fb sevices
com.facebook.appmanager =fb appmanager
com.facebook.system =fb app installer
com.coloros.childrenspace =kid space
com.nearme.atlas =secure payment
com.heytap.pictorial =lock screen magazine
com.android.stk =sim tool kit
com.android.bookmarkprovider =Bookmark manager for the stock browser.
com.android.wallpaperbackup =Relates to the wallpaper of the home page. Useless.
com.heytap.openid =Service for HeyTap MCS
com.heytap.colorfulengine =Service for HeyTap MCS.
com.heytap.datamigration =Service for HeyTap MCS.
com.heytap.mcs =Related to OPPO cloud service.
com.coloros.deepthinker =Deepthinker (has some kind of notification access!)
com.coloros.phonemanager =phone manager
com.tencent.soter.soterserver =biometric authentication for wechat pay
com.wapi.wapicertmanage =wapi certificate manager (useful if u live in china)
com.qualcomm.qti.uim =remoresimlockservice
com.qualcomm.atfwd =used to send at command to/from the modem
    (this package can be abused to attack on ur phone, so uninstall this package  haha!)
com.google.ar.core =AR
com.google.android.tag =nfc tag
com.google.android.projection.gearhead =android auto
com.google.android.onetimeinitializer =provides first time setup
com.android.traceur =system tracing useful 4 developer
com.coloros.smartdrive
com.google.android.feedback =sends crash report to playstore??
com.google.android.googlequicksearchbox =this package runs in background!
com.google.android.apps.restore =system restore. it will auto renable during reset of phone anyways
com.google.android.marvin.talkback =android accessiblity suit
com.oppo.quicksearchbox
com.android.calllogbackup
com.google.android.gms.location.history
com.google.android.tss =speechservice by google(text read aloud)
com.coloros.assistantscreen
com.coloros.calculator
com.coloros.gesture
com.heytap.music
com.coloros.video
com.google.android.inputmethod.latin =google keyboard
com.oplus.crashbox =sends crash report to developer
com.coloros.oshare =ShareData to& from of oppo devices
com.oppo.operationManual
com.android.email.partnerprovider =lets google partner to optimize default email settings
com.android.mms =sms application
com.coloros.activation


🔰 NOTE :

You can't do anything (uninstall or disable) with "Game Center app" as it's protected.

Open developer options> wireless debugging>it will show 2 informations i.e. 1st -ip address & port. 2nd -pair device with pair code.
So, click on "pair device with pairing code" which will open a popoup

open adb in laptop and type= adb pair (ip address:port from popup)
eg: adb pair 192.168.4.231:44567

then it will ask for pairing code.... enter it from popup

once done it will get paired and popup will disappear

now type = adb connect (type ip address:port from 1st option)
it will connect

🔰 NOTE : if pair code option doesnt exist then just type adb connect (ip adress:port)

⏩to connect to tcpip server type= adb tcpip port
eg:adb tcpip 5555

⏩to stop it type =adb kill-server
⏩to disconnect everything type =adb disconnect

To create list of all things present in the folder, first go that folder in windows and click in address bar and backspace all the text and type cmd.(u can also manually direct cmd in that location of folder using "cd" i.e. change directory command)

Now type= dir /b *.png >list.txt

This will create a text file containing Name list of all the png fies in that folder. Use *jpg etc... if other things r present.

open txt file ,u will notice wrong order of names. SO, install notepad++ app, and copy this text in this app and in app click edit>line operations>arrange integers in ascending order.

1. how to make a user root

Entered Root using command $ su root. Input Root Password

Install sudo: $ apt-get install sudo -y

Add your [username] $ adduser [username] sudo

$ exit

and reboot



2. To Make Update Speed Fast

$ sudo nano /etc/apt/sources.list

and change http to https



3. To Copy or To Move A File Using Root Permissions Use sudo Command In terminal. Dolphin would not work in root.

Microsoft.BingWeather
Microsoft.GetHelp
Microsoft.Office.OneNote
Microsoft.YourPhone
Microsoft.XboxSpeechToTextOverlay
Microsoft.MicrosoftOfficeHub
Microsoft.MicrosoftSolitaireCollection
Microsoft.SkypeApp
Microsoft.XboxGameOverlay
Microsoft.XboxGamingOverlay
Microsoft.XboxIdentityProvider
Microsoft.Microsoft3DViewer
Microsoft.Wallet
Microsoft.WindowsFeedbackHub
Microsoft.WindowsMaps
Microsoft.People

To see available packages=
dism /Online /Get-ProvisionedAppxPackages | Select-String PackageName | Select-String xbox

To remove xbox packages=
Get-ProvisionedAppxPackage -Online | `Where-Object { $_.PackageName -match "xbox" } | `ForEach-Object { Remove-ProvisionedAppxPackage -Online -PackageName $_.PackageName }

🔰 NOTE that the quotation marks like these " ", are not included while writing a command.

1.open the command prompt(cmd)....... easy way to open it is by pressing windows icon button and r button together, which will open the run dialog box and then write "cmd" in the box and press enter...whoooo cmd opens!

2.it will be having something already written on it like "C:\Users\inspiron15>", so if u want to choose other drive ,then just write the "drive letter" and " : " , for example like this "C:\Users\inspiron15>E:" and then press enter.

3.now it will show "E:\>" ,  but if u want to choose a random folder(directory) in this drive ,then, write "cd" and then give a space and then write the path like this, "E:\>cd mbbs\anatomy" and then press enter. Now it will show this, "E:\mbbs\anatomy>", SUCCESS HAHAHA!!

4.now write following command in front of it "fsutil file createnew test.bin" and then give a space and write number of bytes(size of file u want to make),...for example,""E:\>cd mbbs\anatomy fsutil file createnew test.bin 107374182400" and press enter...... this will create the dummy(fake file) instantly even within a external hard drive or pendrive(hahahaha)....... Tip:: u can convert the required gb or mb value into bytes using the internet(HEHEHE)....


20 gb = 21474836480 bytes
40 gb = 42949672960 bytes
50 gb = 53687091200 bytes
100 gb = 107374182400 bytes

1.install adb platform from net.Once u extract the adb platform files in any folder , then search in windows bar for "variables".

2.It will show 2 settings.....choose the one named "edit the system environment variables".

3.advanced>environment variables>System variables block>Path-double click>click on New>now click on browse>locate the adb platform folder

download imagemagick from internet

now go to the required folder in windows and click in address bar and backspace all the text and type cmd.(u can also manually direct cmd in that location of folder using "cd" i.e. change directory command)

1.now type= magick screenshot*.png haha.pdf
This will convert all png files "eg.screenshot 1.png, screenshot 2.png ,.....etc.." to haha.pdf file.

2.Another best method is by creating list first. To do that
 Type= dir /b *.png >list.txt

This will create a text file containing Name list of all the png fies in that folder. Use *jpg etc... if other things r present.

open txt file ,u will notice wrong order of names. SO, install notepad++ app, and copy this text in this app and in app click edit>line operations>arrange integers in ascending order.

now type= magick @list.txt tree.pdf
This will convert all the files that r mentioned in the list into a pdf in correct order