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Unbrick Samsung Galaxy S8 And Galaxy S8 Plus

Samsung’s latest flagships, without a doubt, come with some absolutely amazing features supported by the Android operating system. But despite all that – do not worry, every great Android smartphone has at least one “but” – some users will notice, at some point, that something doesn’t feel right.

Do you have the feeling that your Samsung Galaxy S8 isn’t working properly? Did you recently make some adjustments to it? There is a chance that you will now have to deal with a soft brick. It sounds scary, but it shouldn’t necessarily be that way. If you will eventually lose your patience or decide that you are not able to fix it, you will simply take it to an authorized service.

As you can expect – and you know it, if you applied some unofficial processes that brought you in this situation – servicing for custom operations falls outside the warranty of the device and you will be required to pay for it. That’s one more reason for you to pause for a second and try to find alternatives that will let you solve the problem on your own.

It would be a pity to pay for something that could be easily fixed at home so at least give it a try. The service center will come into discussion anyway in case you’re actually looking at a hard brick instead of a soft brick.


Nevertheless, if it’s the latter, we have four different solutions you should implement before anything else:

  1. Make a factory reset;
  2. Boot into recovery mode for clearing the cache;
  3. Access the Android Safe Mode;
  4. Downgrade your firmware to the stock version.


In the event that you are currently unaware of what brought you in this situation, for future reference, remember that you are at risk every time when you:

  1. Install shady third-party apps;
  2. Try to gain root access;
  3. Try to unlock the bootloader;
  4. Try to install a CWM, TWRP, or any other custom recovery image;
  5. Accidentally caught some malware.


These are some of the most common unofficial operations that can end up with a soft brick. Below are the most common fixes:


#1 – The factory reset

The factory reset, also known as hard reset, will erase all your data and bring the Samsung Galaxy S8 to its default settings. Some say you should do it at least once a month, just to make sure that the device will stay in great shape and function with optimum speed. Now that you’re in this strange situation, you have even more reasons to try it because it will help you get rid of whatever you did in the first instance – and you can’t remember now – that made your phone stop working.

From boot stuck and boot loops to black screen, repeated app crashes, general low performances and many other problems, the factory reset is known to work like charm.


Don’t know how to do it? Check out this guide and you will find out everything you need.

You did it but it didn’t work? Read on and find out what else you could try.


#2 – The wipe cache

To wipe the system cache you will first have to access the Recovery Mode:

  1. Turn off the device;
  2. After that, simultaneously tap on the Home, Power, and Volume Up buttons;
  3. Hold them like that for a couple of seconds, until you will see the Recovery Mode displayed on the screen.


Once inside the Recovery Mode, the touchscreen of your Samsung Galaxy S8 will no longer work. To reach a particular menu you will have to use the Volume down key. And to initiate a selected option you will have to tap on the Power key.


To wipe the system cache:

  1. Once you have entered the Recovery Mode, start navigating from the phone’s keys;
  2. Select the option labeled as “Wipe cache partition”;
  3. Select Advance, Wipe Dalvik Cache;
  4. Return to the main menu once it finishes;
  5. Initiate the option labeled as “Reboot system now”;
  6. Wait for the device to reboot and return to the normal running mode.


#3 – Access the Safe Mode

If you’re having second thoughts about wiping the cache or doing the factory reset, you can test and determine if you are really dealing with a malfunctioning third-party app or something malicious. Boot your Samsung Galaxy S8 into Safe Mode, where only the basic processes, services and apps function. If it works flawlessly in there, you can suspect a malicious app and since you cannot exactly identify it, you can reconsider bringing the device to its factory defaults.

For detailed instructions on how to boot into Safe Mode, go here.


#4 – Install the stock firmware

ODIN will help you downgrade your current firmware to the stock version. With this app in use, the right Galaxy drivers downloaded and installed on a PC, and the USB debugging enabled on the smartphone, you are ready to go:

  1. Use this link and download the required firmware file for Galaxy S8;
  2. Download Odin;
  3. Place the file on the desktop;
  4. Turn off the phone;
  5. Access the Download Mode;
  6. Launch the Odin app;
  7. Connect the phone with the PC;
  8. Access the Odin app and select AP;
  9. Identify the stock firmware file that you downloaded (the one with the .tar format);
  10. Make sure the re-partition option is not ticked;
  11. Wait to get the Pass!! message on the Odin app and the device to restart – the telltale that all went perfectly;
  12. Disconnect the phone from the PC;
  13. Wait for it to restart and make sure that now it works flawlessly.


If you notice that your Samsung Galaxy S8 got stuck on the Logo screen during the final restart:

  1. Turn it back off;
  2. Access the Recovery Mode – simultaneously press and hold the Volume Up, Home, and Power keys;
  3. Under Recovery Mode, select the Wipe Data / Factory Reset option;
  4. Then, select the Reboot System Now option.


And that’s all. The device will restart without problems this time!



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