Update build G920FXXU3COI9 on Galaxy S6 SM-G920F, Features Battery Life and Apps Optimization

Samsung has just released an update build G920FXXU3COI9 on Galaxy S6 SM-G920F. Noticeably, the latter brings some new features for battery life and apps optimization. The said feature will now allow users to monitor the battery usage and optimized its performance as well as to save as much power consumption. This also applies to the new App Optimization that also let users to optimized any apps that might consumes and causes the battery power to drain quickly.

In addition, while taking a closer look at the G920FXXU3COI9 firmware build itself, it seems that it has a highest changelist value that we have seen so far as to compare from the previous 5.1.1 updates. According to the initial changelog details, the G920FXXU3COI9 5.1.1 update also brings some unmentioned bug fixes and improvements to the device stability.

Here are the technical details of the update build G920FXXU3COI9:
  • Android version: 5.1.1
  • Baseband version: G920FXXU3COI9
  • Kernel version: 3.10.61-5816106
  • Build number: LMY47X.G920FXXU3COI9



The Battery Usage and App Optimization Feature:

Fortunately, the G920FXXU3COI9 5.1.1 update is heading its way to France but might also be release throughout Europe's Galaxy S6 owners soon. So only those whom France can get this update right now to which can be downloaded and installed via Over The Air and or by using Samsung Smart Switch. But for those advanced users from other countries that might want give it a try, you can grab the G920FXXU3COI9 stock firmware here. The update's file size weighs at around 78.14 MB.

How to Update the Galaxy S6  (SM-G920F) to build G920FXXU2COI9


  • Ensure to recharge your phone first.
  • Do not forget to backup all of the important data that were stored in the device memory.
  • Your Galaxy S6 must still run on the official software version and has not been rooted nor installed with non-official firmware.

Updating the Galaxy S6 via Over-The-Air (OTA)


This is the usual method on how to check and to perform an update on Galaxy S6 to the latest software version.  This method is what we called Firmware Update  Over-The-Air and so-called as FOTA or simply OTA update. In most often cases, a notification message will be directly sent out to you by your network provider and by Samsung itself, telling you that there is a new update that has now available for download.  This approach requires you to prepare a strong WiFi connection,  and so it might happen sometimes that one did not receive any software update notification messages; (1) If and when the device is out of range during the software update roll out  period, (2) Automatic update has been turned off in the device Settings.
However, We can still manually check for the update instead.

Here’s how to do it manually:
  • From your Galaxy S6 Home screen tap on Apps.
  • Select the Settings gear icon.
  • Tap About device.
  • Tap Software update.
  • Tap Check for an update.

It will then notify you that a new update is available for download. But it also says that “Your device software is up to date“, and there is no software update is yet available for grab. You can simply choose Download and Install now if you do so or else Install later if you want to get the update in later time.

But if ever you might have had received this message while checking software update that says something like “The operating system on your device has been modified in an unauthorized way. Try downloading software updates using Smart Switch on your computer or visit a customer service center.”  This is a warning message that only appears for those devices that have been rooted and installed with modified and unofficial firmware.  So to be able to get the Software OTA update again, you must Unroot the Galaxy S6  first and removed any modification that has been installed on it.

Update the Galaxy S6 using  a Computer via Smart Switch for PC


Download Smart Switch for PC

You have to choose the one that is specifically built for computer, depends on what you have either a PC or Mac.  Once you installed Smart Switch, all you need to do is to connect your Samsung Galaxy S6 on your  computer using the supplied USB  cable.
  1. Open Smart Switch in your computer.
  2. Connect the Galaxy S6  into the computer using the supplied USB data cable.
  3. Smart Switch will automatically prompt you if the update is available. Just click on the “update” then the “OK”  button to begin updating your Galaxy S6.

Once the update is made, you may now check the technical details of the new update, from Home screen  simply touch the Settings gear icon and then tap About device.