We have got some really good news for Sony Xperia Z5 Premium users. The Flyme guys are back with a new Android based custom firmware ROM and Xperia Z3 is the lucky one who’s getting an update with Android 6.0 Flyme Marshmallow Custom Firmware. 

The latest ROM is based on AOSP so be ready to get the genuine experience of an Android smartphone along with some really awesome features and tweaks to customize your Sony Xperia Z5 Premium. In this tutorial we are going to give you a brief and comprehensive tutorial on how to install that latest Flyme Marshmallow firmware onto your Xperia Z5 Premium. 

So let’s get you started with some important things you need to keep in mind before the installation process.

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  1. This update will delete all your data so make sure to back up.
  2. AndroidiOSpack will not be help responsible if something goes wrong with your device during or after the update. 


  • 1- Make sure you fully backup your data on your . As this update will wipe all your data from your device.
  • 2- Download Sony USB Drivers.
  • 3- Make sure you device has a custom recovery installed. 
  • 4- Your device’s bootloader has to be unlocked. 
  • 5- Dalvik Cache wipe is helpful for performing from the recovery mode. 
  • 6- You also have to have ADB and Fastboot downloaded on your personal computer. 

Essential Downloads:

How to update Xperia Z5 Premium with Android 6.0 Flyme Marshmallow Custom Firmware:

Step 1- First of all download the file mentioned in essential download on to your personal computer. 

Step 2- Extract zipped ROM file titled boot.img and save it separate on your person computer. 

Step 3- Connect your device with your personal computer using a USB cable.

Step 4- Copy paste both the files you downloaded in first step onto your device’s SD card and not in any of your device’s folder.

Step 5- Copy the file you extracted in 2nd step titled boot.img and past it into directory of android-sdk-windows\platform-tools.

Step 6-Turn your mobile off.

Step 7- Next press and hold onto the Volume up button for enabling Bootloader mode which will turn your phone screen blue when enabled.

Step 8- Locate the directory of android-sdk-windows\platform-tools in your desktop and press Shift + Right-click > Open Command Prompt in which you should type ‘fastboot flash boot boot.img’ and press Enter.

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Step 9- Next type this command and press Enter again. ‘fastboot reboot’.

Step 10- Lastly you should long press the Volume up/down key until the phone’s screen turns a color other than blue for entering into Recovery mode. 

Step 11: Once in the Recovery mode, tap “wipe” button to erase all data from your device, then go down and tap “swipe to the factory reset” option.

Step 12: To flash the ROM, you have to head back to the main menu, tap on install option and then search for the ROM zip file that you have copied to your phone’s memory in step 2. Select it, tap on the confirmation button to proceed on with the installation process.

Step 13:  Once the installation process is completed, you should go back to ‘+++++ Go Back +++++’ to reboot your phone.

That’s about it. You have downloaded Android 6.0 Flyme Marshmallow Custom Firmware onto your Xperia Z5 Premium device. 


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