[Samsung Galaxy A20 Guides, News, & Discussion] physwizz:
Information and Guides from the above website

1. Full repair firmware

Problems Solved This Firmware

Update android version.

Fix Camera.

Fix Invalid IMEI And Baseband.

Fix Wifi and Bluetooth.

Fix custom binary blocked by frp lock.

Fix standing on the logo.

Fix storage space.

Fix slow device.

Fix sensors.

Solve the problem of high temperature.

Fix applications stop working.

Fix restarting the device.

delete pattern or password.

Fix hide Imei.

Fix baseband unknown.

Remove root.

wipe data.

wipe cache.

hard reset.

Fix sound problems.

Firmware Galaxy A20:

Important Notice: Please Inform us in case of any dead link, Or any flashing error you get when using these files, So we can check and replace, Send an Facebook with details to: Contact us

Warning: This firmware A20*** use to repair software smartphone problem and it will clean everything on your smartphone so you have to backup your data, don’t try to flash your device with this firmware if it work prefect. if you use pit file please make sure 16GB or 8GB or 32GB, Because the 8GB Pit file don’t work with 16GB or 32GB and the same for 16GB or 32GB Pit File make sure you use the Correct ROM for your device.

To flash your Samsung galaxy smartphone, you need Odin software made available to the Samsung Galaxy users for flashing a range of things including firmware, custom recovery, CF-Auto-Root and more. Odin software performs a clean install that means; it removes the old firmware and flashes a new one,Backup your data before start flashing you smartphone.

Here you find all the latest android os for the Galaxy A20 SM-A205GN, if you want to flash your device with the newest Samsung software. Before downloading, make sure you check your exact model number. You can download the most recent Galaxy A20 firmwares for free, or check out our cheap but fast download options.

Important tools to work flash android update:

Drivers: USB Samsung Galaxy

Odin

How To Flash Galaxy A20

Extract the Firmware A20*** By 7z or winrar You should get 5 files (BL-AP-CP-CSC-Home CSC).

Download Odin.

Add each file to it's respective field in Odin v3.13.3. Use CSC_** if you want to do a clean flash (lost data) or HOME_CSC_** if you want to keep your apps and data (unformat).

Reboot Phone in Download Mode (press Volume Down + Volume Up and connect the Type-C USB cable to device).

wait until you get a blue sign in Odin.

Add the files to BL - AP - CP - CSC

Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.

Click the start button, wait for Odin to say 'PASS' in a GREEN box. Once the flash is complete, your phone will reboot, and you can disconnect your phone from the PC.

Now you have the latest android version

2. Combination firmware

Samsung Galaxy A20 Combination Firmware is a stable program for complex and sophisticated tasks. You can flash the device using this developer program to conduct a test that shows you the results of the phone check. It is really important that this particular firmware Samsung A20*** can:

Bypass or remove Google Account Protection

Bypass or remove Samsung Account Protection

Remove RMM Protection

Repair IMEI

Write Cert

Fix Boot loop

Enable USB Debugging

Unlock Network

Important tools:

Drives USB Galaxy

Odin Tool

How To Flash Combination File:

1-Extract the Combination By 7z or WinRAR You should get 1 file .

2-Boot your phone to Download Mode ( Volume Down + Volume Up and connect the Type-C USB cable to device ).

3-Open Odin Tool and wait to get a blue sign in Odin.

4-Add the file Combination to AP.

5-Do NOT tick any extra boxes.

6-Click the start button, wait for Odin to say 'PASS'.

3. Fix dm verity

What is the DRK or DM-Verity for device a20***

DRK Is an acronym DEVICE ROOT KEY It is an encrypted number for the device and It is positioned when manufacturing by Samsung.

When we turn on the device, the device checks this encrypted number to check if the system is original or not.

Fix DM-Verity (DRK) Galaxy A20

Reasons for the appearance of DRK problem

This problem occurs when we flash the ROM that does not match the device in terms of the version Bashband, Or when flashing a custom ROM by a custom recovery (TWRP) Or by the stock rom For example, Stock ROM but a language has been added to it In this case, the encrypted number will check the status of the system When the system does not match the number, this error will occur, A red write will appear in the recovery mode (dm-verity Verification failed).

Problems resulting from DRK / DM-Verity

-Stop at the Samsung logo.

-Automatic boot to the recovery mode.

-Restart the device.

Warning before starting

-Charge the device battery to a level above 50%.

-Download the files according to the type of device and must not differ any characters.

-Agree that all steps are at your own risk.

Important tools to fix drk

Drives USB Galaxy

Patched Odin Tool 3.13.1

How To Flash Fix DRK A20***:

1-Download Firmware and Extract by 7z or WinRAR.

2-When extracting files, rename the file AP_A205U1 Then delete the extension .md5

3-Open AP File then Extract the system file.

4-Now create an archive of the system file that we extracted previously by a program 7z.

5-Choose the file format .tar Then, create the file.

6-Download Fix Drk file.

7-Now we have two files (DRK File,SYSTEM.tar File).

8-Boot your phone to Download Mode(press Volume Down + Volume Up and connect the Type-C USB cable to device).

9-Open Odin Tool and wait to get a blue sign in Odin.

10-Add the DRK File to BL.

11-Do NOT tick any extra boxes.

12-Click the start button, wait for Odin to say 'PASS'.

13-Boot your phone to Download Mode again.

14-From odin tool Add the SYSTEM File to AP.

15-Click the start button, wait for Odin to say 'PASS'.

16-Then the device will work without problems.

17-In case of any problems please Contact us.

4. Root instructions and unpatched boot images

Root features:

1-Modify or delete files or applications of the operating system.

2-Run programs that require root permissions.

3-Change the basic fonts within the Android system.

4-Move applications from device memory to external memory.

5-Installation of Custom rom.

6-Fix errors DRK and DM-Verity.

Cons of the root:

1-Loss of phone warranty.

2-Some applications do not work due to root (bluestacks root / dr fone root).

3-Stand on the company logo as a result of misuse.

4-The operating system crashed due to deletion or modification of important system files.

important warning:

Installation and use of the root android is entirely at your own risk and we do not take any responsibility for device failure.

In older versions of the Android system such as Jelly Bean and KitKat was using apps (kingroot / kingo root / framaroot / iroot / root king / towelroot) To get root permissions either in new versions such as Lollipop, Marshmallow, Nougat, Pie and future versions of the Android system, these applications do not work.

What is the difference between SuperSU and Magisk

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The main difference between Magisk and SuperSU is how the root works on Android. Based on what the user wants to do.

We will first talk about supersu root how to get the root where it installs itself within the system files It changes the system files and adds new files to the system partition on the phone, but with the enhancement of Google to protect Android it has become difficult to do so that the amendment to the partition of the Android system to send an alert to applications that are trying to detect the presence of root.

Google SafetyNet monitors the operating system from any manipulation, and when it detects any manipulation in the Android operating system, most applications will not work and will not send you OTA updates.

What about Magisk is one of the most important features that does not touch system files, but modifies the boot partition instead so that it can trick safetyNet service and show that everything is normal and allows Magisk Manager to fully control the root settings.

Notes before root process

Charge the battery well before use.

Use the original USB cable that came with the device.

Use the laptop at work to avoid electricity problems.

You should focus well to protect the binary of your device.

The following protections must be disabled (FRP - OEM - RMM/KG) Follow the following article to learn How to Disbled FRP and OEM for device Samsung Galaxy.

Files required for root work

-Samsung Driver USB

-Odin Tool

-Magisk Manager

-Root A20xxx file

How To Root Galaxy A20xxx android Pie 9.0

1-Download Drivers, Odin and A20xxx Root files for Pie 9.0 Depending on your device version.

2-Install the drivers on your device.

3-Install the Magisk Manager app on your Phone.

4-Transfer the boot file to the device's memory after extracting the file.

5-The entire file name will become boot.img.

5-Open the Magisk Manager app.

6-Open the application settings and from the option Patched Boot Output Formate We choose .img.tar.

7-We return to the main interface of the application And we click on install a new window will appear we choose install too.

8-A new window will appear titled Select Patched We choose the second option Patch Boot Image File.

9-Locate the boot file and give the application access rights.

10-Patch Boot will take some time about 5 minutes.

11-After the process is finished navigate to the MagiskManager folder or Download folder you will see the file named patched_boot.img.tar (mroot A20xxx).

12-Copy the file to your computer and open the Odin tool.

13-Of the box AP We choose the file (patched_boot.img.tar).

14-Boot your device into download mode press Volume Down + Volume Up and connect the USB cable.

15-Press Start to flash the boot file.

16-After the flash is done, you will be asked to work factory reset.

17-It will take about 10 minutes to boot the Android system.

18-After the boot is complete we install the Magisk Manager application.

19-After installing the app you need to reboot your device with Magisk to get root permissions, Open the Magisk app and from the options at the top of the app we choose Modules and then we press the three points above and we choose Reboot.

20-You can check for root access through the root checker app.

21-In case you encounter any problems please feel free to contact us

22-If you want to unroot or revert to the offical firmware, you can read the following article: Full Firmware For Device Samsung Galaxy