How to ADB Sideload OTA Update Firmware on Galaxy S6 and S6 edge

Here are the step by step procedure on how to sideload an OTA update firmware on Galaxy S6, S6 edge, and S6 edge+.  This method is used by advanced users to manually update the said devices if somehow it did not received an OTA update for a longer period of time. From here you can manually install the most latest updates even if you've already missed all of the previous updates.

What you'll need:

First thing first, you need to verify the current firmware build version of your Galaxy S6, S6 edge, or a S6 edge+ phone. Doing so can save you some extra time and you easily grab what firmware version you are about to grab.

To do this, just simply head on to your device settings.  From Home screen > tap Apps > tap Settings icon > tap About device.

Once you already knows the firmware version your device running at, simply grab all the recent updates. You should not missed a single one update file as the installation process will be in continuous manner.

Grab the ADB Installer:
- version 1.4.3 (Google Drive)
- version 1.3 (Google Drive)

Look for a firmware packages that are compatible for ADB sideloading at these pages:
- Galaxy S6 Firmware
- Galaxy S6 edge Firmware
- Galaxy S6 edge+ Firmware


Before you proceed prepare these necessary things as follows so you will not screw-up your phone:
• Create a back-up with Smart Switch of all your personal data, like: Contacts, Messages, Applications, Pictures and Videos, so that you will not lost it just in-case something might went wrong after the update.
• Make sure that your Galaxy S7 Edge battery is fully charged to ensure stability and to get rid of power failure issues while updating.
• TURN OFF the Reactivation Lock - Go to Settings > PERSONAL > Lock screen and security > Find My Mobile and log in your Samsung Account. Then uncheck the Turn Reactivation lock on. This is only needed if you already turned-it-ON, from which you cannot modify the system when it's turned-ON.
• If you disabled some system bloatware manually or with a third party software, make sure everything is enabled again.

  1. Reboot your Galaxy S6, S6 edge or S6 edge+ phone into recovery. Turn it off first, then press and hold down Volume Up + Home + Power buttons at the same time. You may then see the recovery mode screen with the little Android guy.
  2. Simply select "Apply update from ADB" by using the volume buttons while also using the power button to select an option.
  3. Copy the download firmware and put it in the ADB folder.  The ADB folder is located in your local disk C drive.
    You may also rename the file so you can easily remember it  like from SS-G935AUCS4APK1-to-U4BQA4-UP" to "Update".
  4. In the ADB folder, hold SHIFT + right mouse click and choose "Open command window here". Then type the command "adb sideload UPDATE" (where UPDATE is the file you previously renamed).
  5. Wait for while as it may take longer and it depends of the file size you have installed.  It may take around more or less 20 minutes before it completes or until the phone reboots in a welcome screen logo.

You may then repeat the process from step 1 to step 5 to install the next firmware version or until your phone acquires  the most latest firmware updates.