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Samsung Galaxy S7 can no longer boot up after the Nougat update [Troubleshooting Guide]

If a high-end phone like the #Samsung Galaxy S7 (#GalaxyS7) fails to boot up, you can almost tell it’s a firmware issue and such suspicion is almost confirmed if the problem started after a firmware update. Recently, Samsung rolled out the Android #Nougat update for its flagship devices and we started receiving firmware-related issues shortly after.

In this post, I will tackle this problem, although we may already have published articles similar to this before. So continue reading the step-by-step troubleshooting guide below as it may be able to help you fix this problem with your device. While we want to help our readers fix issues with their phones, there are problems that are beyond our reach and in which case, you need help from a technician.

In case you’re looking for a solution to a different problem, visit our troubleshooting page for we have already addressed hundreds of problems with this device. Those problems are based on complaints we received from our readers so there’s a high possibility we’ve already addressed similar issues. Just try to find issues that are the same with yours and feel free to use the solutions we suggested. If they don’t work for you or if you need further assistance, fill up our Android issues questionnaire and hit submit to contact us. Just make sure you provide us with the information we need and we’ll help you find a solution.

Troubleshooting Galaxy S7 that won’t boot up after Nougat update

The purpose of this troubleshooting guide is for us to know what this problem is all about–what caused it and what the possible solutions are. But then again, we’re simply troubleshooting and we may not be able to fix the problem should it come to the point that we’re dealing with more serious hardware issues. With all that being said, here’s what you have to do…

Step 1: Attempt to boot your phone up in safe mode

We don’t know for sure why your phone won’t boot up successfully until it reaches the home screen so we have to assume things to be able to come up with something that could tell us why it’s happening with your phone. The first thing we have to assume is that one or some of your third-party apps is causing the problem that’s why we need to try to boot your phone up in safe mode with all third-party apps temporarily disabled. This is how you boot your phone up in safe mode:

  1. Press and hold the Power key.
  2. When Samsung Galaxy S7 logo appears, release the Power key and immediately hold the volume down key.
  3. Continue holding the Volume Down key until it finishes its rebooting.
  4. When “Safe mode” appears on the screen immediately release the Volume Down key.

When the phone successfully booted up in this mode, it means that our suspicion is confirmed. Therefore, we have to look for the app or group of apps that’s causing the phone not to successfully boot up. Once found, clear its cache and data and if that won’t work, uninstall it.

  1. From Home screen, tap App icon.
  2. Tap Settings.
  3. Tap Applications and Application manager.
  4. Swipe to ALL tab.
  5. Find and tap suspected app.
  6. Touch the Force Close button first.
  7. Tap storage.
  8. Tap Clear cache and Clear data, Delete.

To uninstall an app, just follow the same procedure but tap on Uninstall instead of the previous options. If your device failed to boot up in safe mode, then try to move on to the next step.

Step 2: Attempt to boot your phone in Recovery Mode

Booting up in recovery mode will power up all hardware components but the Android interface won’t be loaded so if the problem is with the firmware and even if the device can’t boot up in safe mode, it may still be able to boot up in recovery mode as if there’s no problem. When successful, there are things you can try and one of them may be able to fix this problem. You should try wiping the cache partition first and if that won’t work, proceed with master reset. Both of these procedures can be done within the recovery mode environment.

How to wipe cache partition on Galaxy S7

  1. Turn off the phone.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished wiping the cache partition. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

How to do Master Reset on Galaxy S7

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key. NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds. NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

If the problem isn’t fixed by any of these procedures, then it’s time you sent it in for checkup and repair. The firmware may need to be reinstalled and you shouldn’t do it yourself as it may void the warranty of your device.

Galaxy S7 stuck on Samsung logo after the Nougat update

Here’s another problem that’s also similar to the one we’ve tackled above. While the end result is the same–phone won’t boot up successfully–this one shows the Samsung logo until you turn your phone off or reboot it. Here’s one of the messages we received that’s related to the issue…

Problem: Hi! My phone is a Galaxy S7 which is still 4 months old. Yesterday there was an update, it downloaded on its own and after which, the phone is showing the Samsung logo and won’t move on to the home screen. I don’t know if I can still uninstall the update and if so, how. If that’s not possible, then what shall I do?

Troubleshooting:  While it’s obvious the problem started after an update, we still can’t be sure it’s a firmware issue or just some problems with some of your apps that’s affecting your phone’s overall performance. So, with that, here’s what I suggest you do and why…

  1. Boot up in safe mode to know if it’s an issue with your apps and if so, you would know if it’s a third-party app or a pre-installed one depending on whether the phone boots up successfully or not. If the phone boots up in this mode, then your third-party apps have something to do with the problem. Some of them may not already be compatible with the new system, otherwise, it’s all in the firmware.
  2. Try booting up in recovery mode and wipe cache partition. This will delete the system cache which may have been corrupted during the update process. Doing this procedure may also speed up your phone a little bit depending on how fast it was prior to Nougat. If this doesn’t work, however, try the next step.
  3. Perform the Master Reset on your device. If the wiping of the cache partition failed, then it’s time you reset your phone to try to delete possible corrupt system files and data. This, however, will delete all your files, data and preferences not to mention it brings the phone back to its factory settings. So make sure you backup your files and data before doing this.

For all these procedures, follow the step-by-step guides in the first problem. If the issue persists after doing all these, let the tech handle it for you–bring the phone to the store or shop.

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