How to Debrand A2 Phones using A2Uploader

Check if your phone type included in A2 phones

A2 v1/DB3150
C702, C902, G502 , K630, K660, K850, T700, V640, W595, W760, W890, W902, W910, W980, Z750, Z770, Z780.

A2 v2/DB3210
C510 ,C901, C903, C905, G705 W705, W715.

Why should i do this?
– If you want to debrand your phone (to get rid the operator logo from your phone)
– If your current operator or your current region don’t have the newest firmware update.

This tutorial required fast and stable internet connection when updating the firmware. If you have slow Internet connection, or you want to do it offline (in your home without Internet), you can read and follow tutorial from SE-NSE Forum: Flashing A2 phones with A2Uploader

Download these tools:


In your phone:
– Make sure the battery is not empty (at least 50% or more)
– Turn off your phone
– Pull and Re-insert your battery (without turning on the phone)

In your computer:
– Open Ultimate CDA Generator Extreme.rar and run Ultimate CDA Generator Extreme.exe
– Select your Sony Ericsson phone type from drop-down list.
– Select your desired region (also see available language for that region)
You should choose GENERIC if you want to debrand your phone and remove all operator logo from the phone.

– Click CDA File tab

– Click Save…

– Let the file name Customize_upgrade.xml (DO NOT CHANGE)
Remember the path where you save this file.

– Now, you can close Ultimate CDA Generator Extreme.exe

Note: the_laser (A2Uploader’s creator) uses themidia encryption to prevent people stealing the sources and loaders of his A2uploader and most Antivirus software recognize it as a virus/trojan horse. So, this software is completely safe and no need to worry about it.

– Open A2Uploader_V.3.rar and run A2Uploader_V.3.exe
– Click FileSystem tool
– In your phone, hold 2 and 5 button OR C button. While holding the button, connect your phone to computer.
– On the right side, you can see the list of phone’s content.

– Go to /tpa/preset/custom/ directory and put your Customize_upgrade.xml file into this directory by drag-and-drop the file into A2Uploader application window.
– Make sure that Customize_upgrade.xml has been copied into /tpa/preset/custom/ directory on your phone.

– Click Shutdown FS Manager, then Quit a2 tool.
– Turn on your phone, Turn off again, pull and re-insert the battery.
– Now run Sony Ericsson Update Service (SEUS) and it should detect new firmware update.
– After you updated the firmware, all operator-related logo should be disappear from your phone.

Allahu A'lam. Allah Maha Mengetahui.
Semua kesalahan yang ada di blog ini datangnya dari kesalahan dan lalainya manusia (saya sendiri), mohon koreksinya kalau dirasa ada yang salah.

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38 Awesome Comments So Far

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  1. Alex
    November 19, 2009 at 06:10 #

    thx very much, ive read other guides and couldnt understand them, now I finally got rid of that stupid o2 firmware.

  2. wazza
    November 27, 2009 at 09:18 #

    works a treat de-branded my k850i which kept crashing due to 02 firmware,

  3. Marcus
    December 17, 2009 at 13:20 #

    Thank you so much!!!

    Finally a guide i could understand! :D

    BTW after you have replaced the file download sony ericsson uppdate

    Here is for w595

    • Ryan Isra
      December 17, 2009 at 15:48 #

      You're welcome.
      Thank you for the link.

  4. nazar
    December 26, 2009 at 04:51 #

    dear Ryan, i can call my self '' exhausted be google'' trying 2 solve my lil problem

    i have a C905 sent to me from london, it is debranded but the problem is it doesn't support Arabic language, which i use frequently in messaging.

    -ive downloaded sonny ericcson PC suit, which failed 2 update the software.

    -then downloaded the updater .exe , latest software was updated, but still.. brought me 2 your page and i've followed the instructions exactly, but now get stucked in :

    (Make sure that Customize_upgrade.xml has been copied into /tpa/preset/custom/ directory on your phone.)

    the drag/drop didnt work with me and there is no paste/ copy option..

    i dont want to wonder around and do a stupid thing and kill my phone,so

    hope 2 hear ur kind opinion..

    p.s. im using windows vista home edition, if it might help..

    thanks any way, in advance..

    • Ryan Isra
      December 26, 2009 at 14:04 #

      I'm not sure if it was Windows Vista issue, but you can try to use compatibility mode for Windows XP.

  5. Jane
    January 11, 2010 at 08:54 #

    Hi have just used your guide but after using SEUS it says that I have most up to date software already. Any ideas as vodafone logo etc still on phone.

    • Ryan Isra
      January 12, 2010 at 13:46 #

      If you followed those steps correctly, you will be able to update and remove vodafone logo.

  6. Jane
    January 17, 2010 at 05:06 #

    Hi Ryan – thanks tried it again and it worked. Many thanks

  7. Miguel
    January 24, 2010 at 04:26 #

    no tpa thing comes up on a2 uploader plz help

    • Ryan Isra
      January 29, 2010 at 04:47 #

      re-read and retry again…

  8. Nicholas
    April 25, 2010 at 16:37 #

    Hello Ryan!

    Before I begin I must warn you I am a n00b at re-branding phones, so bear with me!

    Your how-to looks very easy, but when I chose my phone (C903) from drop down menu in A2 tool, it doesn't do anything ( i.e. show me the languages/regions on the right-hand side). What am I doing wrong? Should the phone be connected via USB and the drivers you've included installed?

    • Ryan Isra
      April 25, 2010 at 16:40 #

      Yes, you should download all required tools and install them.
      Please read those steps carefully.

  9. Nicholas
    April 25, 2010 at 16:56 #

    Many thanks!

  10. Nicholas
    April 25, 2010 at 21:55 #

    One other thing, do I remove my SIM card before I begin the process?

  11. grarga186
    May 1, 2010 at 19:20 #


    i've followed ur tutorial to THE LETTER and its NOT FRIKEN WORKINGGGGGGGG…..what COM port is my sony ericsson c903???? why doesn't ultimate cda find it??

  12. Baloo
    June 3, 2010 at 14:47 #

    Hi, great guide, but I have a problem. When I run A2 uploader, i click FileSystem Tool, hold 'c' and it recognises my phone (in the left panel). But no file structure is shown. I'm confident I followed your guide to the letter, what could be the problem?

    Thanks in advance


  13. Phil
    June 7, 2010 at 08:01 #

    I'm almost positive that I have followed every single step and every time I try to update SEUS tells me that there is no update available.. not sure what I'm doing wrong..

  14. chirag patel
    June 30, 2010 at 04:46 #

    hei i tried this but it says:

    ChipID:E900,EMP protocol:0401


    Elapsed:6 secs.

  15. Dida13
    August 11, 2010 at 14:49 #

    I use windows vista. and a2uploader stopped working when I click FileSystem Tool, why? plz help me

  16. pris
    August 30, 2010 at 02:51 #

    hi ryan,

    i tried your steps, one by one but i cant seem to access the folders,

    a2 detects the phone but comes up with elapsed time, but no directory on the right

    i tried with xp and 7

    please help

    • Paul
      July 25, 2012 at 21:02 #

      Had the same problem, took me ages to figure out that you need to get the latest version of the A2 uploader and not the one supplied in the link above.

  17. Roy
    November 23, 2010 at 13:46 #

    Love u dude…..

    Debranded ma w810i orange…

    thnks a lot

  18. ant
    December 16, 2010 at 13:17 #

    hi will this work on the w995 locked to o2 and the cid 0081 as i want to debrand it and get rid of all the o2 crap thanks

    • Ryan Isra
      December 23, 2010 at 23:45 #

      I'm not sure as I don't have any Sony Ericsson phone at moment.

  19. joanne
    December 17, 2010 at 00:38 #

    can anybody answer instead of been ignorant can this work with o2 cid 0081 or is it to much to ask

  20. Steve
    May 3, 2011 at 00:15 #

    Hi Ryan is this totally safe for debranding sony ericsson c510 on vodafone?

    Is there any risks of bricking the phone?

    Please respond asap thanks.

    • Steve
      May 3, 2011 at 00:51 #

      Also if i have updated the firmware already on seus, do i need usb flash driver? Or willit have been already installed through seus?

    • Steve
      May 3, 2011 at 02:04 #

      Also does sim and memory card need to be removed during this process? Thanks again.

  21. hak
    July 2, 2011 at 00:52 #

    too much thanks isra i havent words for your praise u solved my problem i am again and again thankful to u.

  22. hak
    July 2, 2011 at 00:54 #

    thanks isra i debranded my c905 vodafone ……

  23. hasansohel
    July 27, 2011 at 17:58 #

    hi isra. i have posted to thank u specially.i followed your instruction. it was helpful. but i stuck in Sony Ericsson Update Service (SEUS). somehow i solved the problem. i suggest u to write on how to use update service for c905.

    here u can find sony ericsson update service:

  24. Rich892
    September 27, 2011 at 00:27 #

    Hi, If my c905 is currently unlocked (using a2 unlock&repair) will i lose the unlock if i debrand it?

  25. Chandana
    October 9, 2011 at 11:18 #

    Hi, my phone is sony ericsson C510 and it’s software version is R1HA035…so I want to add flash menus for my phone…Plz somebody help me to find proper a2uploader for my phone…thanks

  26. Steve Pajantoy
    October 25, 2011 at 17:32 #

    OMG! thnk you so much, i can now update my w595 firmware^^

  27. shadamk2
    October 30, 2011 at 22:39 #

    worked first time on my w995 no probs easy instructions
    thanks m8

  28. maimunah
    December 1, 2011 at 22:36 #

    use the a2uploader now my C902 wont boot. its saying configuration error contact your network provider. please help me

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