Full Specification

(Recover deleted or lost data from Samsung Galaxy)

China in recent days about the Samsung Galaxy S6 of three anti-edition S6 Active news gradually increased, it is certain that the aircraft will have a high level of IP68 waterproof. A profile now leaked online, the file appears Samsung S6 Active this new machine will use 1440 × 2560 resolution display.
According to previous rumors, Samsung S6 Active screen size or 5.1 inches, equipped with a frequency of 2.1GHz Exynos 7420 processor, with 3GB of memory, configuration 5 megapixel front +1600 megapixel main camera, and is equipped with 3500mAh removable battery .
In fact, Samsung Galaxy Galaxy S6 and S6 Edge are used 2K-level display, Samsung S6 Active has the same screen resolution is also a great possibility. News from foreign media that Samsung S6 Active will be officially released later this month, so stay tuned.

I bought an unlocked Telstra Samsung Galaxy S4 4G, and it's loaded with some Telstra software. I wanted to get rid of those, so I loaded up Kies and it gives me the option to perform a "Firmware upgrade and initialisation". I don't want it deleting everything off my phone and I don't want to do anything to my phone to mess with it so I wanted to be absolutely certain I understood what would happen. I tried googling this subject but couldn't find any useful information. And lost any contacts, videos, photos, apps, call history, whatsapp data from Samsung Galaxy s4 after firmware installation.

Firmware Update (Android OS)

An Android update will normally attempt to retain ALL user data, settings, and (custom loaded) applications. But this is only true for minor update, as major changes will make your existing applications incompatible. For each application, the vendor may provide an update with support for the new version to convert (or import) any old data.

Exceptions: If you are attempting a major Android update (eg. from 3.2 to 4.0+) this will very likely not retain (in any useful form) any of your settings.

Your specific case: If you were using KIES to update Android from 4.0 to 4.0.4 (or similar) this should be as painless as OTA (over-the-air) updates (prompted on your phone). However, it is not clear from your description what type of 'firmware' (Android or ROM) it is suggesting.
Samsung Data Recovery compatible with almost a full range of Samsung galaxy S2/S3/S4/S5/Note, galaxy S6 included.If you looking for a effective way to recover your Samsung lost data after Firmware Installation, even Firmware upgrade or Push updates, please don’t worry, free download a trial Windows or Mac recovery version below to have a try.

Step 1. Launch the program and connect your Samsung Galaxy

Firstly, download, install and launch the Samsung Data Recovery program. Then you need to connect your Samsung Galaxy to computer via USB cable.

                   

Step 2. Enable USB DebuggingIn order to have your Samsung Galaxy detected and scanned, follow the corresponding way to enable USB debugging according to your Android OS now.

1) For Android 2.3 or earlier: Enter "Settings" < Click "Applications" < Click "Development" < Check "USB debugging"
2) For Android 3.0 to 4.1: Enter "Settings" < Click "Developer options" < Check "USB debugging"
3) For Android 4.2 or newer: Enter "Settings" < Click "About Phone" < Tap "Build number" for several times until getting a note "You are under developer mode" < Back to "Settings" < Click "Developer options" < Check "USB debugging"

Step 3. Scan and Analyze Lost Data

Now, tap on "Start" button so the recovery software will begin to analyze and scan for all deleted data on your Samsung Galaxy.
If you get the window as follow, tap "Allow" several times on your homescreen until it disappears. Then click "Start" again to scan for deleted data. Now your phone has been detected by the program.
Note: Please make sure your phone battery is more than 20% changed during the scanning.

Step 4. Preview and Recovery Samsung Files

When the scan is over, you can preview all the content before recovery. Mark those you want back to click "Recover" to save your lost photos, messages, contacts, videos and music on your computer.
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