Sony XPERIA E is
not interesting phone on first look. But phone have Android 4.1.1 Jelly
Bean from factory and Sony Mobile release experimental Firefox OS for
this phone. 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 Go 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 Go ST27. So, what can you expect in terms of mentioned manuals /
tutorials?
It is following 5 guidelines showing HOW TO:
1. how to install the newest Android 4.1.1 for your phone (for Sony XPERIA E C1505 it is currently the 11.3.A.0.47 firmware)
2. how to install unofficial experimental build of Firefox OS for Sony XPERIA E C1505
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 bootloader (in case you want to install the custom kernels with recovery menu and much more)
5. how to relock the bootloader (in case you want to go back to stock (original) ROM or you must send your phone to service)
And now let’s do all 5 actions step by step
1. how to install the newest Android 4.1.1 for Sony XPERIA E C1505
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 here (mirror)
c) download also latest Android 4.1.1 (mirror) for Sony XPERIA E C1505
d) paste the ftf file downloaded in step c) to folder „Firmware“ included in the XPERIA Flashtool
e)
open the XPERIA Flashtool, 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 instalation and then restore
your personal data.
f) turn off your phone and when Flashtool 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
2. how to install experimental Firefox OS for Sony XPERIA E
a) first of all, check if your bootloader is unlocked, if not, start with it
b) download and install latest Flashtool from here (mirror)
c) download also experimental Firefox OS (mirror) for Sony XPERIA E
d) paste the ftf file downloaded in step c) to folder „Firmware“ included in the XPERIA Flashtool
e) open the XPERIA Flashtool, click on flash and choose downloaded firmware, than click ok
f) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
g) after few minutes all is done and your phone gets new experimental Firefox OS
3. how to backup your original firmware customization
a) if you do not want to lose warranty of your phone, first thing you have to do is to backup your original customization
b) download Sony Update Service (SUS) and reinstall firmware of your phone (backup your data first)
c)
after that, go to SUS folder in Program Files and search for folder
db/some Number/blob_fs, there you find 3 files, which names start FILE
d) download and install latest Flashtool from here (mirror)e) paste the three files, which names start FILE, from blob_fs folder to folder „Firmware“ included in the XPERIA Flashtoolf) open the Flashtool, click on Advanced, choose decrypt files and put all three files from blob_fs folder to the right colummg) click ok and after approx. one minute a pop up Window will appear via Flashtool
h)
mark all files except simlock.ta and transfer them to the right column,
than fill in a box in the right upper corner (fill in what you want, it
is just for you)
i) now click ok and Flashtool will create backup of
your original firmware customization, that you can anytime flash to
your phone
4. how to unlock your bootloader
a) download and install latest Flashtool from here (mirror)
b) start Flashtool and click on BLU button on the top
c) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
d) click on get unlock key button, it will switch you to Sony Mobile website, here complete all boxes
e) copy IMEI form Flashtool to Sony Mobile site, than you will get unlock code to your mailbox
f) copy unlock key to Flashtool window and than click unlock
5. how to relock your bootloader
a) download and install latest Flashtool from here (mirror)
b) start Flashtool and click on BLU button on the top
c) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
d) just click on relock button and your bootloader is locked for now
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