Sony XPERIA SP C5303 - Android 4.3 - firmware 12.1.A.1.207

Sony XPERIA SP C5303 - Android 4.3 - firmware 12.1.A.1.207


Information the Product- 

Sony XPERIA SP is very powerfull device. On first look, it has same functions as Sony XPERIA T etc. But there are some new features - Glove mode, color notification bar or very good construction. Below you can find the latest firmware for the phone and also three tutorials/manuals - how to unlock the bootloader, how to relock the bootloader and how to backup the original firmware customization.
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 my own download server, 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 SP 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 SP C5303. So, what can you expect in terms of mentioned manuals / tutorials?
1. how to install the newest Android 4.3 for Sony XPERIA SP C5303
a) first of all, check your firmware version (if you already have the newest one, you do not need this tutorial)
b) download and install latest Flashtool from this article
c) download also latest Android 4.3 (Download Free mirrors Google Drive or Mega
for Sony XPERIA SP C5303
d) paste the ftf file downloaded in step c) to folder „Firmware“ included in the XPERIA Flash tool
e) open the XPERIA Flash tool, click on flash and choose downloaded firmware, than click ok. Important - if you do not want to delete any data of your phone, just uncheck flashing userdata.sin file. All data will remain in your phone, but sometimes it can cause additional troubles. So it is better (and I recommend that) to do the backup of your personal data, than proceed with clean installation and then restore your personal data.
f) turn off your phone and when Flash tool shows pop up window, connect phone to PC with holding volume down button 
g) after few minutes all is done and your phone gets the new firmware

It is following 5 guidelines showing HOW TO: 
1. how to install the newest Android 4.3 for your phone (for Sony XPERIA SP C5303 it is currently the 12.1.A.1.207 firmware)
2. how to install the newest Android 4.1.2 for your phone (for Sony XPERIA SP C5303 it is currently the 12.0.A.2.254 firmware)
3. how to backup your original firmware customization (it is important in case you must send your phone to service)
4. how to unlock the boot loader (in case you want to install the custom kernels with recovery menu and much more)
5. how to re lock boot loader on your phone

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