Option to unlock the boot loader now available for advanced developers

As announced earlier, we are now launching a web page where you can get instructions and a key to unlock the boot loader of certain series of Sony Ericsson 2011 Android™ Gingerbread phones.

With its new generation of 2011 Xperia™ smartphones (including Xperia™ arc, Xperia™ neo, Xperia™ pro and Xperia™ PLAY) Sony Ericsson is allowing advanced developers to unlock the boot loader in a secure and legal way. This service will be available for certain releases of those phones. The only way to determine if you can unlock the boot loader for your phone is to connect your phone to the Fastboot tool in the Android™ SDK. For more details, please read the previous blog post on this topic: Unlocking the boot loader in the new Xperia™ smartphones.

Please note that you may void the warranty of your phone if you unlock the boot loader. See your phone’s warranty statement for details.  Additionally, due to the modified phone software, Sony Ericsson’s repair network may not be able to properly test and repair your phone according to our normal procedures.  Consequently, if Sony Ericsson does perform a warranty repair, Sony Ericsson may charge you a handling fee for any additional incurred costs due to your modification of the software.

Certain content on your phone may also be inaccessible due to the removal of DRM security keys and the secure user data partition while unlocking the boot loader.

If you still wish to unlock the boot loader of your phone, and if you are aware of the risks involved, and have a good level of knowledge of the technology, you can visit unlockbootloader.sonyericsson.com. There you will find detailed instructions on how to unlock the boot loader (if possible on your phone). Just click Start unlocking the boot loader to get started.

Karl-Johan Dahlström
Senior Program Architect at Sony Ericsson

UPDATED: For any questions, Sony Ericsson will monitor this thread on Google groups. However, we cannot guarantee an answer for every question asked in this forum.

Comments 21

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  1. By Eswar MaxDy


    How To Relock Back Boot Loader???

  2. By Alvin Casshern Casucian


    For xperia Go ST27i and how?

  3. By Jasvinder Singh


    i got sony xperia z2 uk version and i am from india and i am getting problems in phone like it automatically starts his own applications by own without touching plz help me out since i am not getting warranty in india for the sony xperia z2 model no. D6503 i unable to update the phone from service centre and bootloader is also locked and it cannot be unlocked since its has a zero options to unlock

  4. By Cris Dayril Bagnes


    For XPERIA UL please!!!

  5. By Pritish Kanani


    Please start sony update service(SUS) again.My live with walkman(wt19i) keep restarting.
    I am unable to update softare in EMMA as my phone is locked.And also unable to unlock the phone with flash tool,android sdk because in that i have to on usb debugging but my phone deos not start.so i dont understand what to do?
    Please start sony update service(SUS) again.

  6. By Shiva Kumar


    sony xperia neo l mt25i don’t see on sony bootloader unlock list
    can I do it or I cant pls help

  7. By Shiva Kumar


    i don’t see sony xperia neo l in the boot loader unlock list on sony website please advice what can be done

  8. By Sebastian Meyer



    how long does it take to recieve the eMail in step 2 (eMail verification)? Tried today to recieve a bootloader unlock for my SK17i, xperia mini pro, used 4 different mail accounts, checked my Spam folder, no Mail since around 6hours…


  9. By Cemil Öztürk


    Camera issue will be fixed soon? Need fix immediately…..

  10. By Rajesh Rao


    Hey Karl-Johan,

    Do you know where one can purchase unlocked, North American frequency SE phones for development purposes? I can find the Euro versions of the phones, but can’t find any NA phones.

  11. By Ming


    Relock the boot loader Possibility??

  12. By Mayank


    @Karl-Johan Dahlström
    Thanks for the reply 🙂

  13. By Reginald


    @Karl-Johan Dahlström
    Thanks for providing the bootloader unlocking. I’m sure you devs at SE put in a lot of effort to make this possible and it is much appreciated.
    You might be aware that over at XDA Developers, there is some effort going in to loading a kernel with root access.
    So far this has been unsuccessful, and I’m wondering if you can help? I think a post there from SE devs with a suitable kernel would be unheard of. In a good way 😀

  14. By Renaud Lepage


    Karl-Johan, here’s a suggestion. Just a quick, VERY dirty one, and MOST PROBABLY unsafe. But you keep control of the radio interface and some software integrity is kept.

    Create a signed “image” that unlocks access to internal memory (only for internal flash of, for example, the system, data and boot partitions), puts a bootloader which allows unsigned kernels to be booted, wipes EVERYTHING in /system and /data, and integrates a very basic bootstrap Android – basically, flash an Android recovery into /boot (kernel and ramdisk). That way, SIM integrity is preserved, data is wiped, and the bootloader is compatible with geeks.

    Make that available to select developers (at first), and then to people who -register- their X10s (much like the 2011 line process). Put -very- specific orders as to how to flash it, the dangers, and create an “electronic waiver” of sorts that basically tells the client “yeah, if this bricks my X10, SE is NOT responsible, I won’t cry like a baby, blah”.

    Sidenote: An upgrade (for an “acceptable” fee) for death-by-flash X10s would also probably be a good idea. That way you can refurbish X10s for warranty purposes (yay JTAGing the “broken” ones back to functionning state) and still make a profit off the ones who mis-flashed their X10’s into oblivion.

    Still on the “Contact the geeks” side, provide a couple of interface libraries and servers (the ril and other low-level interfaces) so that the geeks don’t have to hack around and/or reverse-engineer how to talk with the radio (and possibly find some interesting stuff :P). You get to control the interface with the radio components while at the same time sparing the community some work – positive points!

    That kind of solution shuts the geeks’ mouths up, gets them on your side, and keeps the X10 a relevant phone for people who want to get their hands dirty. For the others? Xperia Arc and Play. FYI, if the Canadian ones are bootloader-unlockable, consider me an Xperia Play user already.

    I know it’s a long-shot. I just imagined that solution in 10minutes.

  15. By Karl-Johan Dahlström


    Hi Arjoon,
    You are right, unlocking the boot loader doesn’t give root access.
    However after unlocking the boot loader there is a possibility to flash with custom SW that would allow for root access.