Official Android 4.0 Ice Cream Sandwich for Xperia Arc and Arc S — Installation Guide


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  • Gaurav

    The link for downloading firmware is not available…..

  • Ćh Bharat Rawat

    hey admin last error showes on 73 % u said ignor the errors if i ignore the error ,is the installation is completed plzz help sorry fr my bad English

  • Lester Rae G. Garra

    Is this compatible with lt18 docomo? Thanks

  • hadi

    what if i had an lt18a ?? would it work?

  • Firmware link
    • hady

      if i had lt18a will it work /??

  • Ben Ramirez

    would there be a difference if i used the LT18_4.1.A.0.562_NCB.ftf instead of

    • Ben Ramirez

      And im using a SE Arc. will it work?

  • Conor Fitzsimons

    Firmware link is dead. Can you please fix, I would really appreciate it. Thank you.

  • houssam


  • Muntashir Muzib

    Can I downgrade to Gingerbread with the Flashtool?

  • alexcoolkid33

    unfortunatley, everthing was going fine until step number 5 where it says that the download is temporarily unavailable. Please get it fixed, as im desperate for this update!!! cheerss

  • alphaomega

    It was now working on my Xperia Arc, but finally done. In flash tool just check Wipe Data, Wipe User Cache, Wipe Apps Log and don’t forget to check No Check Verification

  • Luqi

    hey my phone goes off after sony logo showing an exclamation mark in a triangle and then phone turns off…please help me….

    • kevin m

      same thing happened to my phone…… go to this site
      Install Official Android 4.0 ICS update to your Xperia arc [Guide] | Xperia Blog and re-install the drivers… it worked for my arc s LT18i

      • kevin m

        you can use the same firmware from this site!!!

  • fida

    thnxxxxxxx a trillion for your hard work
    i follow all these steps
    and succesfully updated from 2.3.4 to 4.0.4 again tnxxxx buddy

  • shahid

    i have arc S and i have successfully completed flash but when my phone start some exclamatory on triangle is coming…. please help me …

    • fida

      the traingle indicates that ur phone is also rooted enjoy it mate

    • kevin m

      same thing happened to my phone…… go to this site
      (Install Official Android 4.0 ICS update to your Xperia arc [Guide] | Xperia Blog) and re-install the updated program and drivers… it worked for my arc s LT18i,
      you can use the same firmware from this site!!! good luck

    • abes45
    • Arc LT15i

      hey… shahid… same happen to me… help me …

  • Arc User LT15i

    Does your device need to be rooted for this to work
    Please help
    I have a Xperia Arc with build 4.0.2.A.0.62 and i cant find out how to root this device
    So will a root be needed?

  • Jean

    stuck on 60% in flasher Xperia Arc Unlocked bootloader

  • Karl Pearce

    this doesnt work my phone turns on and i get the sony logo but then i get a phone and warning sign and it wont load? what do i do??????????????? please help?

    • Geert Dhulst

      Same experience…

    • Geert Dhulst

      Do as Wisky83 suggests. Works fine by me!!

  • Syd Yaseer

    my xperia arc lt15i phone is succesfully updated bro after sony screen comes its getting restarted and automatically its getting turned off noting is coming please help me out

  • wisky83

    i have xperia Arc LT15I…..i did the steep and it didn’t work…it was broken, but after some checking on the webi made it work.Install flashtool and check ” No final verification” and it will work ICS

    • Kapil

      Thanks for sharing your thoughts and findings with us.

  • Hertzog

    have these problems been sorted out… I have Arc Lt15i… Is it gonna work proparly??

    • Kapil

      Check out the official development page linked above. You’ll get all the updates regarding this rom there.

  • Sunny 200745

    its stuck in boot loop wat to do now. M having xperia arc s, m in great trouble please help

  • Sam

    shame shame shame sony ericsson….why is your software support such utter garbage?
    Are you a bunch of morons or just don’t care….I suspect the latter.

  • Greenmoney21

    Keep rebooting even after using, how to downgrade it back?

  • Edwin

    yesss,,, fix up
    for who’s got boot loop,, shut down your device
    continue to this

    and root your xperia arc/arc s

    fyi: first time will get slow respon on xperia arc

    • Jon-Terje Bjørnerud

      Nope, still doesn’t work. SE Arc, all other firmwares has worked fine, phone was rooted already and worked well. According to what I can find from Sony this version will infact NOT work on normal Arc. If anyone should happen to find a working solution, please post in this thread.


      • Edwin

         after test up for 1 day,,,
        every restart go back to setup wizard,,
        cannot install apps,, free mem for device 0
        wifi not working

        time to downgrade :(

  • Tes Binu

    didnt worked , rebooting

  • Rsivanandan

    Yep, looks like boot-loop ? Any solutions? -> On Xperia Arc.

  • Rsivanandan

    Yep, looks like boot-loop ? Any solutions? -> On Xperia Arc.

    • Edwin

      same here,,,

      after flash – disconnect
      got boot loop,,, on LT15i

      • Rsivanandan

        Upgrade the flashtools to the next version and reflash using it again. It worked fine and am on ARC with ICS. Works slow though…

        • cela

          can u help me? I upgraded the flastools but when i connect my phone to the usb, the flasher doesnt recognize the phone. I get this message: device connected in flash mode.
          what can I do?

  • Prabhath Karunakalage

    flashed it. but now i get only the startup coot screen. sony then xperia. it keeps repeating.

  • Prabhath Karunakalage

    15/044/2012 07:44:41 – INFO
    – Start Flashing

    15/044/2012 07:44:41 – INFO
    – Ending flash session

    15/044/2012 07:44:41 – ERROR

    15/044/2012 07:44:41 – ERROR
    – Error flashing. Aborted

    above message appears. doesn’t continue flashing. any help?
    and it says be sure that im not connected in MTP mode. i pressed the back button when connecting. it said connected in flash mode.

    • Michaelkutu

      u need to enable “usb debugging” and change MTP to MSC

  • gonzalo Contreras Juarez

    Hola alguien ya logro actualizar el Xperia Arc LT15i y que tal les resulto…

    no pierde la liberacion el equipo?

  • Per_b

    Dont work on xperia arc lt15 . Boots Sony then xperis then sony ……….  :(

  • HTxperia

    after download the not .ftf ????

    • Kapil

      Hold on… don’t use it… new version being updated… check back in 10 mins

    • Abhijeet Mishra

      Hi. Your download manager renamed the file to .zip. Just rename it to .ftf and you’re good to go. 

      • Josepive

        Does it work for LT18a? Built 4.0.2.A.0.62 ?

        • Kapil

          Yes, it should work.

          • Josepive

            Yes, it is working properly. It was updated to LT18i.