Samsung Galaxy S6 4G+ (SM-G920I) Android 5.1.1 Update, Lollipop version G920IDVU2COH4 Rolling Out in Singapore

The Samsung Galaxy S6 4G+ (SM-G920I) Android 5.1.1 Lollipop update has finally arrived. The 5.1.1 update which is being dubbed with build G920IDVU2COH4 is now available at Samsung's firmware database. Though, there are no any official reports to when the update could start to roll out at this moment. But this update will going to be release in Singapore's Galaxy S6 4G+ these couple of days if and once this updated version comes at its finalization stage.

What are the technical details of the update?

Android version: 5.1.1
Kernel version: 3.10.61-5567447
Baseband version: G920IDVU2COH3
Build number: LMY47X.G920IDVU2COH4
AP: G920IDVU2COH4
CP: G920IOLC2COH3
CSC: G920IDVU2COH3

Features/Enhancements of the 5.1.1 Update:

  • OS upgrade to 5.1.1
  • Google security patches (Stagefright)
  • Samsung applications update
  • Other global bug fixes, stability and security improvements

How to Update the Samsung Galaxy S6 4G+ (SM-G920I) to Official Android 5.1.1 Lollipop


Just follow these guide on how you can keep your Galaxy S6 in a much safer way while performing a software update.  I also added some useful insights and why you should follow this procedure.

First and foremost make sure to recharge your Galaxy S6 4G+ – While performing a software update on Galaxy S6 it may only take just a couple of minutes but sometimes it may take longer. It will depend on how small or large the update size is, but most cases it also affects the speed of your data connection. Slower WiFi data connection may take longer while a stronger data connection is more speedy. A 40% to 50%  battery power is enough, but a fully recharged one is way much better. Since we cannot determine how what the exact time we need to consume when initiating the firmware update so we should make sure our device has still enough battery remaining power to avoid any fatal issues. Have you ever heard or encountered those fellas who ended their devices into soft-bricks? A device was just stuck on Samsung logo or welcome screen and can’t reboot normally, those are what we called soft-bricks. And most probably caused by an inadequate battery power while performing the software update.

Do not forget to back up all of the important data – Even though there are no any data that are going to be deleted right after performing the software update. But what if the software update went wrong, the update unexpectedly fails and then the phone becomes unresponsive and then it forces you to perform a wipe data/factory that basically wipes your phone’s memory storage just to resolve the issue. So you should backup your important files, including contacts, messages, call log, photos, videos, music, and apps. You cannot recover these files if somehow accidentally deleted when the software update goes wrong.

Your Galaxy S6 4G+ must still run on the official software version and hasn’t been rooted nor installed with non-official firmware update – Just in case you just need to know that a rooted and a modified Galaxy S6 will not get official software update anymore from Samsung and either to which carrier or mobile network provider it came from. It will not allow users to install the update as it might harm the device once the update has made. So a rooted and modified Galaxy S6 users usually receives this warning message instead, that says: 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.

Update the Galaxy S6 4G+ via Firmware Over-The-Air (OTA)



This is the usual method on how to check and to perform an update on Galaxy S6 and S6 Edge 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 directly send 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:
  • In 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 your Galaxy S6 first and removed any modification that has been installed on it.

It will then automatically tells you that a new update is available or your software is up to date when there is none yet.

Update the Galaxy S6 4G+ using  Smart Switch




Samsung Smart Switch has the capability to  initiate software update on Galaxy S6 and S6 Edge. You can use Smart Switch to update your Galaxy S6 software to the latest versions.  It can also be used if the Software Over-The-Air update fails for some reason. The Smart Switch is way similar to the before Samsung Kies that had been used on several devices.

You may head-over to your local Samsung support page from where you can download Samsung Smart Switch from there.  You can 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 is to connect your Samsung Galaxy S6 SM-G920F into the computer using the supplied USB data cable.

1. Run Smart Switch on PC.

2. Click on the “More” button at the right top of Smart Switch. You will then presented an option.  Choose “Preferences”  in the drop-down. You are then presented with two tabs the Backup file and  Software Update.  The backup file allows you to allocate a certain folder where you want your  backup files to be stored. Then on the other hand theSoftware Update tab is where you can set it to the Latest Software Pre-Download Settings.  Just mark the checkbox where it says  Latest Software Pre-Download.

3. Connect the Galaxy S6 into the computer using the supplied USB data cable.

4. Select the “Backup” button, to safely kept your important data and files such as contacts, messages, call log, videos, music, photos, application and more.  The back up data files will be stored in the  documents folder of your computer. This is a very important steps as it wipes out all of it while performing the software update process. All data will permanently deleted and it cannot be recovered, so ensure to create a backup first before it’s too late than sorry.

5. Click on the “More” button again.  Choose “Emergency software recovery and initialization” in the drop-down option.

Choose the “Software Update and  Initialization” tab.
Wait for a couple of seconds as it check the current software version of your Galaxy S6 and then check for the latest software update version to initialized.  You may then simply follow the on-screen instructions that ask you to click the “OK” or a “Cancel” button.

Once the Software update initialization started you must not  interrupt the process like unplugging  the data cable connected to the computer nor turning off the device. You must wait until it says “Software update and Initialization are complete”.

Once your Galaxy S6 reboots disconnect it from the computer. Then reconnect it back again.

6. Lastly restore the backup, choose “Restore” button to restore the previously created  backup files.

That’s all! Just let me know if you already updated your Samsung Galaxy S6 4G+ SM-G920I to software build version G920IDVU2COH4 Android 5.1.1 update.