
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:
- Download Ultimate CDA Generator Extreme
- Download USBFlash Driver (download this driver, if ONLY, you’re flashing your phone for the first time.
- Download A2Uploader
Instructions:
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.
what most people search here: a2uploader, A2 v2/DB3210, a2 uploader, a2uploader c905, DEBRAND C903, A2 Uploader download, a2 v2 db3210 download, sony ericsson c905 hacked firmware, a2 tool, how to use a2uploader, c905 a2uploader, a2uploader download
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thx very much, ive read other guides and couldnt understand them, now I finally got rid of that stupid o2 firmware.
lol. you’re welcome :)
works a treat de-branded my k850i which kept crashing due to 02 firmware,
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
http://www.sonyericsson.com/cws/support/softwared…
You're welcome.
Thank you for the link.
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..
-mr.google 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..
I'm not sure if it was Windows Vista issue, but you can try to use compatibility mode for Windows XP.
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.
If you followed those steps correctly, you will be able to update and remove vodafone logo.
Hi Ryan – thanks tried it again and it worked. Many thanks
no tpa thing comes up on a2 uploader plz help
re-read and retry again…
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?
Yes, you should download all required tools and install them.
Please read those steps carefully.
Many thanks!
One other thing, do I remove my SIM card before I begin the process?
ARGHHH!!!
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??
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
Baloo
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..
hei i tried this but it says:
ChipID:E900,EMP protocol:0401
BOOTROM MODE DETECTED
Elapsed:6 secs.
I use windows vista. and a2uploader stopped working when I click FileSystem Tool, why? plz help me
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
Love u dude…..
Debranded ma w810i orange…
thnks a lot
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
I'm not sure as I don't have any Sony Ericsson phone at moment.
can anybody answer instead of been ignorant can this work with o2 cid 0081 or is it to much to ask
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.
Also if i have updated the firmware already on seus, do i need usb flash driver? Or willit have been already installed through seus?
Also does sim and memory card need to be removed during this process? Thanks again.
too much thanks isra i havent words for your praise u solved my problem i am again and again thankful to u.
thanks isra i debranded my c905 vodafone ……
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:
http://www.sonyericsson.com/cws/support/mobilepho…
Hi, If my c905 is currently unlocked (using a2 unlock&repair) will i lose the unlock if i debrand it?
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
OMG! thnk you so much, i can now update my w595 firmware^^
worked first time on my w995 no probs easy instructions
thanks m8
use the a2uploader now my C902 wont boot. its saying configuration error contact your network provider. please help me