How do i reset sony ericsson k610i without switching on the phone?

to format sony ericson mobiles follow the step
step1. go in menu and enter in the setting option
step2. in setting menu search for master reset or factory setting option.
step 3. enter in master reset option it will ask you for code.
step4 enter code 0000
now you are done.
0000 is default code it will work unless you have changed it.

by the use of master reset code you able to unlock your cell phone from the following link u can get your master reset code
http://www.unlockcellphonecode.com/index.php?osCsid=0a903925bfd2886063779d5965aaf5cf

You may try by following instructions given below.
Warning: Do not enter any wrong unlock unlock codes on your Sony Ericsson K610i mobile phones. If you enter over a certain amount of wrong unlock codes on your mobile phone, your phone may get hard locked and sometimes become unusable.

1 - Switch ON your Sony Ericsson K610i mobile phone without any SIM Card,
2 - Press the left arrow key/button once,
3 - Press the button * twice,
4 - Press the left arrow key/button once,
5 - The message "Personalize with MNC2" will appear,
(or you will have displayed an unlock menu, select the lock you want to unlock)
6 - Enter the Unlock Code.

If your Sony Ericsson K610i mobile phone does not have a left arrow button/key(e.g. Sony Ericsson W950i) and on a few phones(not all) that have a "JOGDIAL" you must press the "down arrow" key/button instead of the "left arrow" key/button for step 2 & 4. We mean by "Down Arrow" to direct the Jogdial down! In the Sony Ericsson W950i and some other models, the down arrow button/key would be located on the side of the phone.

Its a software complaint...so please find your nearest sony ericsson service dealer and reinstall the software.

the battery might already be empty. try charging it for 10 minutes or longer before switching it on.

try resetting its settings to factory setting or try reformatting it.

u can use ur bluetooth option for transfering audio and video files.
2nd option is to use ur data cable and transfer the audio and video files from ur pc to phone.

Remove Your Sim Card, Power The Phone On
Press # From The (Insert Sim) Screen
Enter codes WITHOUT spaces.
Press * 3 times fast for (p)
Press * 4 times fast for (w)
Press * 2 times fast for (+)
Verify code before pressing the last #(No Private Messages Please)

You should be able to down load the latest softwear off the Sony Ericsson website. Otherwise the phone should have a 12 month manufactues warranty and can have it done for free at an authorised Sony Ericsson repair centre.

master reset once keeping the backup of ur phone ... and also format the memory card also once ...