Downgrade Galaxy S6,S6 edge, S6 edge+ from Android 6.0.1 Marshmallow to 5.1.1 Lollipop, Yes You Can!

There has been a lot of questions via our contact page surrounding the Galaxy S6, S6 Edge, and even the Galaxy S6 Edge+ Android 6.0.1 Marshmallow updates. Some folks may not conveniently  satisfied how's the Marshmallow performed according to their own experienced. Some may complain about some lag issues, whilst others complained about some of their daily used or important   apps that may not tend to work any longer.

Majority of these folks were asking if they just can temporarily downgrade back their devices from Android 6.0.1 Marshmallow to Android 5.1.1 Lollipop just like the way it was before but may then get back to Marshmallow until it stabilized further.

You can do read these Marshmallow issues in forums and social media.   Now, to keep this post short and straight forward, "Can we really downgrade our Galaxy S6, S6 edge, and S6 edge+ from Android 6.0.1 Marshmallow back to Android 5.1.1 Lollipop?"
The Answer is; Yes you can!
This can only be done on international Galaxy S6, S6 edge, S6 Edge+ plus variants, including the American and Canadian version, but except to those device with built in "locked bootlooader" such as the Verizon and AT&T Galaxy S6, S6 edge and S6 Edge+ models. Devices with unlocked bootloaders can be freely downgrade-able, but those with highly secured bootloader cannot be messed around.

Please do note that this is only applicable for the first Android 6.0.1 Marshmallow update your device received.  This is not advisable to any newer OTA updates that may have a locked-up bootloader. 

Here are the list of Galaxy S6, S6 Edge, and S6 Edge+ with unlocked bootloaders and can be dowgraded from Android 6.0.1 Marshmallow back to Android 5.1.1 Lollipop.

T-Mobile Galaxy S6 Edge+ Marshmallow Update to build G928TUVU2DPD1 Rolling Out Begins

T-Mobile has just started rolling out the long-awaited Marshmallow update to Galaxy S6 edge+ (SM-G928T) in the United States. The update has bumped up the software build to  G928TUVU2DPD1, to which is based in Android 6.0.1 Marshmallow (MMB29K).   It may have been taking quite some time before it's released but an update is an update, and is finally here. Before that T-Mobile have had made an announcements that this update went into some sort of testing process before its approval and distribution period. Noting that the Marshmallow update on T-Mobile Galaxy S6 (to G920TUVU3EPD1) and S6 edge (to G925TUVU3EPD1) have been released earlier in April.

Android 6.0.1 Marshmallow Update Firmware build G928TUVU2DPD1 Technical Details:


  • Device: T-Mobile Samsung Galaxy S6 Edge+ 
  • Model number: SM-G928T
  • Android version: 6.0.1 (Marshmallow)
  • Android security patch level: April 02, 2016
  • Baseband version: G928TUVU2DPD1
  • Kernel version: 3.10.61-7652062
  • Build number: MMB29K.G928TUVU2DPD1
  • AP: G928TUVU2DPD1
  • CSC: G928TTMB2DPD1
  • CP: G928TUVU2DPD1
  • Build date: April 01, 2016

Features/Enhancements:


  • OS upgrade – Android 6.0.1 Marshmallow.
  • The following functions have been deleted: Facebook Messanger, Instagram, Whatsapp.
  • The new TouchWiz provides enhanced usability and an updated visual design.
  • Quick connect helps you easily find and connect to nearby devices and pre-connection.
  • Fingerprints are securely protected. An alternative unlock method (pattern,PIN, or password.
  • Advanced power saving mode restricts background data and extends battery life.
  • A new vibration pattern concept has been applied
  • Settings for the following has been reset: Theme, Email, Icon/Widget

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


This is the usual method on how to check and to perform an update on Galaxy 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 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 edge 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 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 edge first, and or removed any modification that has been installed in it.

Update the Galaxy S6 edge+ using 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.

Telus, Bell Galaxy S6 and S6 Edge Android 6.0.1 Marshmallow update builds G920W8VLU3CPC5 & G925W8VLU3CPC5 has rolled out in phases

Despite of some issues causing  delayed, some of the Canadian carriers like Telus, Bell , Wind, and Videotron has released the Android 6.0.1 Marshmallow update on Galaxy S6 SM-G920W8 and  Galaxy S6 edge SM-G925W8 in phases.  While some other carriers such as Rogers has not issued any Android M for now.  This update was supposedly expected  earlier in March, just like the Galaxy S6 edge+ SM-G928W8 which has gotten and received the said Marshmallow update beforehand.  The delayed was cause of a bug discovered during its testing stage to which affects the performance of the device.

However, the said Android M updates came around dubbed as build version G920W8VLU3CPC5 on the Galaxy S6 whilst the S6 edge got the G925W8VLU3CPC5 build. Both builds were already equipped with April 2016 Android security patches, to which indicates that its newly revised builds if the said Android M.

Technical Details on Samsung Galaxy S6 SM-G920W8 Marshmallow Update:


  • Model number: SM-G920W8
  • Android version: 6.0.1 (Marshmallow)
  • Baseband version: G920W8VLU3CPC5
  • Kernel version: 3.10.61-7569052
  • Build number: MMB29K.G920W8VLU3CPC5
  • Android security patch level: April 02, 2016
  • AP: G920W8VLU3CPC5
  • CSC: G920W8OYA3CPC5
  • CP: G920W8VLU3CPC5

Available for Videotron, Wind, and Eastlink Galaxy S6 devices at this time being.

Technical Details on Samsung Galaxy S6 Edge SM-G928W8 Marshmallow Update:


  • Model number: SM-G925W8
  • Android version: 6.0.1 (Marshmallow)
  • Baseband version: G925W8VLU3CPC5
  • Kernel version: 3.10.61-7569052
  • Build number: MMB29K.G925W8VLU3CPC5
  • Android security patch level: April 02, 2016
  • AP: G925W8VLU3CPC5
  • CSC: G925W8OYA3CPC5
  • CP: G925W8VLU3CPC5

Now available for Telus, Bell, Videotron, Koodo, Wind, Sasktel, Virgin-mobile, and Eastlink Galaxy S6 edge devices.

Features:


  • OS upgrade – Android 6.0.1 Marshmallow.
  • The new TouchWiz provides enhanced usability and an updated visual design.
  • Quick connect helps you easily find and connect to nearby devices and pre-connection.
  • Fingerprints are securely protected. An alternative unlock method (pattern,PIN, or password.
  • Advanced power saving mode restricts background data and extends battery life.
  • A new vibration pattern concept has been applied
  • Settings for the following has been reset: Theme, Email, Icon/Widget

Among other things the Android 6.0.1 Marshmallow offers a much fully improved UI. The Doze power management, a redesigned folder and icons, and additional improvements to Apps edge panel are just the features that are quite astonishing.  Along with some performance optimizations, Samsung has also included the latest security patches in the update.

The update weighs at approximately around 1250 MB to download via Over-The-Air. Again the released are still in phases and it may takes some several days before it reaches to all devices, so better check the update manually by going to Settings > About device > Software Update > Check for updates, if you haven’t prompted the availability of  the update yet. You must also ensure that your phone has not been rooted nor modified or otherwise the update may fail and you may not get the update.

[Thank’s to Anne and Vanessa]

T-Mobile Galaxy S6 & S6 edge Android 6.0.1 Marshmallow Update Started, G920TUVU3EPD1 & G925TUVU3EPD1 builds

The Android 6.0.1 Marshmallow update for T-Mobile Samsung Galaxy S6 (SM-G920T)and  Samsung Galaxy S6 Edge (SM-G925T) has finally pushed. Earlier today, T-Mobile have just made the official announcement that the said Marshmallow update for the Galaxy S6 and Galaxy S6 edge has finally been approved and it's launched via over the air. Noting that T-Mobile has also made a report that the Android Marshmallow has been undergone into a testing stage for a quite some time now.   The Galaxy S6 update is dubbed with software build version G920TUVU3EPD1, while the S6 Edge will also receive the update  G925TUVU3EPD1 build.

Technical Details: Android 6.0.1 Marshmallow Update Firmware build G920TUVU3EPD1 & G925TUVU3EPD1


  • Device: Samsung Galaxy S6 
  • Model number: SM-G920T
  • Android version: 6.0.1 (Marshmallow)
  • Android security patch level: April 02, 2016
  • Baseband version: G920TUVU3EPD1
  • Kernel version: 3.10.61-7610624
    dpi@SWHD8902 #1

    Fri Apr 1 10:41:14 2016
  • Build number: MMB29K.G920TUVU3EPD1
  • AP: G920TUVU3EPD1
  • CSC: G920TTMB3EPD1
  • CP: G920TUVU3EPD1
  • Build date: April 01, 2016

  • Device: Samsung Galaxy S6 Edge
  • Model number: SM-G925T
  • Android version: 6.0.1 (Marshmallow)
  • Android security patch level: April 02, 2016
  • Baseband version: G925TUVU3EPD1
  • Kernel version: 3.10.61-7610624
  • Build number: MMB29K.G925TUVU3EPD1
  • AP: G925TUVU3EPD1
  • CSC: G925TTMB3EPD1
  • CP: G925TUVU3EPD1
  • Build date: April 01, 2016

In addition, there some few differences with this released, as the initial changelog details have mentioned that there are some pre-installed apps have been removed. As you may also noticed, it comes out as newer build since the security patch level is already set on April 02, 2016 as indicated.


Features/Enhancements:


  • OS upgrade – Android 6.0.1 Marshmallow.
  • The following functions have been deleted: Facebook Messanger, Instagram, Whatsapp.
  • The new TouchWiz provides enhanced usability and an updated visual design.
  • Quick connect helps you easily find and connect to nearby devices and pre-connection.
  • Fingerprints are securely protected. An alternative unlock method (pattern,PIN, or password.
  • Advanced power saving mode restricts background data and extends battery life.
  • A new vibration pattern concept has been applied
  • Settings for the following has been reset: Theme, Email, Icon/Widget

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


This is the usual method on how to check and to perform an update on Galaxy 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 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 edge 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 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 edge first, and or removed any modification that has been installed in it.

Update the Galaxy S6 edge using 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.

Canada's Galaxy S6 Edge+ plus Android 6.0.1 Marshmallow Update, 1st build G928W8VLU2BPC5

The Samsung Galaxy S6 Edge+ (SM-G928W8) has gotten the Android 6.0.1 Marshmallow update in Canada. The first released build to which were dubbed with build number G928W8VLU2BPC5 are being released over the air. The said update are being pushed by Telus, Bell, and the rest of all major Canadian carriers.  Whilst Rogers devices might going to have a little bit delay but will also surely get it according to their reported released schedule on April 27th.

Technical Details:


  • Device: Samsung Galaxy S6 Edge+
  • Model number: SM-G928W8
  • Android version: 6.0.1 (Marshmallow)
  • Baseband version: G928W8VLU2BPC5
  • Kernel version: 3.10.61-7569052
  • Build number: MMB29K.G928W8VLU2BPC5
  • Android security patch level: April 01, 2016
  • AP: G928W8VLU2BPC5
  • CSC: G928W8OYA2BPC5
  • CP: G928W8VLU2BPC5

Features:


  • OS upgrade – Android 6.0.1 Marshmallow.
  • The new TouchWiz provides enhanced usability and an updated visual design.
  • Quick connect helps you easily find and connect to nearby devices and pre-connection.
  • Fingerprints are securely protected. An alternative unlock method (pattern,PIN, or password.
  • Advanced power saving mode restricts background data and extends battery life.
  • A new vibration pattern concept has been applied
  • Settings for the following has been reset: Theme, Email, Icon/Widget


Among other things the Android 6.0.1 Marshmallow offers a much fully improved UI. The Doze power management, a redesigned folder and icons, and additional improvements to Apps edge panel are just the features that are quite astonishing.  Along with some performance optimizations, Samsung has also included the latest security patches in the update.

The update weighs at approximately 1271.81 MB to download Over-The-Air. The rolling out are usually released in phases and it may takes some several days before it reaches to all devices, so better check the update manually by going to Settings > About device > Software Update > Check for updates, if you haven’t prompted the availability of  the update yet. You must also ensure that your phone has not been rooted nor modified or otherwise the update may fail and you may not get the update.

[Thank's to Tim]

Verizon Galaxy S6 & S6 edge Android 6.0.1 Marshmallow Update Roll Out Begins, Builds G920VVRU4CPC2 & G925VVRU4CPC2

Verizon Galaxy S6 (SM-G920V) and the S6 edge (SM-G925V) Android 6.0.1 Marshmallow update rolls out has started. According to Verizon's announcement the Galaxy S6 will receive the said Android M update dubbed with software version MMB29K.G920VVRU4CPC2. While the S6 edge on the other hand  will get the software version MMB29K.G925VVRU4CPC2.

The update brings the Doze power management to preserve the battery life, Live broadcast improvements, and the newly improved Edge panel functions for the Galaxy S6 edge. Along with it is the new security patches for the month of March 2016. Noting that Samsung and Google had been imposed the monthly security patch update on newer devices. While the rest are several bug fixes to optimize the device performance.


The update weighs at approximately 1.5 GB in file size to which are being held available via Over-The-Air. The rolls out usually being pushed into stages and may takes several days before it reaches to all devices, so better check the update manually by going to Settings > About device > Software Update > Check for updates, if you haven’t prompted the availability of  this update yet. You must also ensure that your phone has not been rooted nor modified or otherwise the update may fail and you may not get the update.

Verizon Galaxy S6 and S6 Edge+ support pages [1] [2]