answer: samsung s3310 flashing by usb without box
Switch off mobile
Press hold 9
Insert Data Cable
See Under Device Manager>>Modems>>Samsung modem>>Port No. N Baud Rate
Remove Data cable
Open S3310_BROADCOM_Downloader_v0.97.exe
Select model1
Configuration>>Port No. N Baud Rate as per Devicemanager
Operation USB
Click On "START"
Nag Screen saying Model 1 Click "OK"
Connecting to target mobile, Trying to open COMX
Press hold 9
Insert Data Cable Phone will display "DOWNLOAD MODE"
Set Imgset, Calset, Rsrc1, Rsrc2, File System from downloaded firmware (S3310XXIE6_open is latest one)
Select "All Download"
Click On "DOWNLOAD"
It will take approximately 200seconds to flash
When done close S3310_BROADCOM_Downloader_v0.97.exe
Remove Data Cable
Remove Phone Battery
Reinsert Phone Battery
Start Phone
It will say Samsung configuration wait 10 sec
Again Phone will restart automatically with flashed firmware
It will clear previous passwords, codes, sms, contacts, Tracker.