Sony XPERIA M Dual – Android 4.3 – 15.5.A.1.5

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Sony XPERIA M Dual is best Dual SIM phone from Sony Mobile. Phone is very small, but it has attractive design and many functions for regular customers. There are two different colours, in which is phone selling. Below you can find the latest firmware for the phone.




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.  The major part of every file has been created by myself and every file has been tested on the corresponding phone. All referenced files are determined for Sony XPERIA M Dual C2005. So, what can you expect in terms of mentioned manuals / tutorials?

It is following 3 guidelines showing HOW TO:
1. Install firmware for Sony XPERIA M Dual
a) Android 4.3 (for Sony XPERIA M Dual C2005 it is currently the 15.5.A.1.5 firmware)
b) Android 4.2.2 (for Sony XPERIA M Dual C2005 it is currently the 15.2.A.2.5 firmware)
2. unlock the bootloader (in case you want to install the custom kernels with recovery menu and much more)
3. relock the bootloader (in case you want to go back to stock (original) ROM or you must send your phone to service)




1. Install firmware for Sony XPERIA M Dual
a) download and install latest Flashtool
b) download OS for your Sony XPERIA M Dual (you can choose from list below)
b1) Android 4.3 for Sony XPERIA M Dual C2005
b2) Android 4.2.2 for Sony XPERIA M Dual C2005
c) 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.
d) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
e) after few minutes all is done and your phone gets the new firmware

2. how to unlock your bootloader
a) download and install latest Flashtool
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
g) connect phone with holding volume up button when Flashtool shows pop up window
h) wait to unlock finish

3. how to relock your bootloader
a) download and install latest Flashtool
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