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Sony XPERIA Z1 and Z1 Compact


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First of all one important thing - before you start to do anything with your phone, do the backup of your personal data. It is only for your safety in case that something goes wrong or any mistake happens. In that case you can use the backup to restore the data and try to do everything once again. Each tutorial has been done many times to verify its propriety, so just read carefully all instructions and continue step by step. For each of Sony (Ericsson) XPERIA smartphones we will provide a manual consisting of 4, 5 or 6 „HOW TO“ chapters. Our tutorials will be of course updated every time when Sony Mobile publishes anything new, affecting any of our topics. All important files have been stored on Google Drive, so there should be no problem with downloading. The major part of every file has been created by myself and every file has been tested on the corresponding phone. In this guideline related to the Sony XPERIA Z Ultra you can find some photos and videos showing how to proceed, but the most important thing are the below written manuals. All referenced files are determined for Sony XPERIA Z1 C6903. So, what can you expect in terms of mentioned manuals / tutorials?

It is following 6 guidelines showing HOW TO:
1. how to install the newest Android 4.4.4 for your phone (for Sony XPERIA Z1 C6903 it is currently the 14.4.A.0.157 firmware)
2. how to install the newest Android 4.3 for your phone (for Sony XPERIA Z1 C6903 it is currently the 14.2.A.1.136 firmware)
3. how to install the newest Android 4.2.2 for your phone (for Sony XPERIA Z1 C6903 it is currently the 14.1.G.2.257 firmware)
4. how to backup your original firmware customization (it is important in case you must send your phone to service)
5. how to unlock the bootloader (in case you want to install the custom kernels with recovery menu and much more)
6. how to relock bootloader on your phone

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