#Option 1, Hard Reset SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) with Software Menu :

    Make sure the battery is charge properly
    Turn on SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) smartphone
    Don’t forget to backup all important data
    Go to menu: Setting > Backup & reset > Factory Data Reset > Reset Phone
    Choose Erase everything to continue and confirm you ready to do the format SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL)
    The SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) will continue the step until ready to use in clean factory default.

 

#Option 2, Hard Reset SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) with Flashtool applications:

    Flashtool in the applications from Sony can be download from Sony website.
    Flashtool software need to  installed in you computer and ready with USB data cable
    Make sure SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) battery is charge properly or full charge
    Power off SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL)
    Boot SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) to flashmode with using: Volume Down Button and connect to USB cable at No.1 above
    Follow the menu at you computer display, it is easy to understand the steps.

 

#Option 3, Hard Reset SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) with Hardware Key Button:

    Make sure the battery fully charge
    Do not forget to backup all important data
    Turn off the SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL)
    Press and Hold together: Power Button + Volume Up Button for several seconds
    Follow the menu at LCD screen to continue the hard reset SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL)

 

#Option 4, Hard Reset SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) with PC Companion Software from Computer

    Please Make Sure the Battery not Empty
    PC Companion is default applications for Sony Smartphone which can be download from Sony Website
    After install at our computer, open PC Companion Applications
    Before connect to phone, please choose Phone Update and follow several step at PC Companion
    At some menu, PC Companion will tell us how to connect the phone with PC Companion using USB cable and press the Volume Down button
    Finish the PC Companion step and until it doing Factory Reset to SONY XPERIA M (C1904/C1905) & (C2004/C2005 DUAL) to factory default Android operating system.


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