All files that you need you can download here:

http://hotfile.com/dl/30969643/25576bc/gallaxy_spica_firmware_21_odindown_drivers.zip.html

or from here:

Downloads - i5700 - GSM-data Free Gsm Support |

Before you start flashing:

- backup your data

- Check your simlock: SIM Lock is [OFF] - Dial *#7465625# to check. If it is not OFF, remove simlock before flashing (unlock you phone)

- enter "2767*3855#

- Fully charge your battery

- Exit samsung pc studio software

- Remove SIM and microSD card

Flashing

1. put i5700 into download mode by holding "volume down + camera key + power on" at the same time:

2. connect phone with PC via USB cable, it will ask for drivers, needed drivers are in package which you can download from link above. Install them. Open you device manager to check if your drivers are installed corectly, it should be like this:

3. Select options and image files as shown on picture below:

NOTE: Please select options and image files exactly as shown on pitcture.

NOTE1: If you want to flash CSC file too contact me i will show you how, it is required to change spica.ops file.

4. Press START button. DO NOT DISCONECT MOBILE FROM PC UNTIL IT IS SHOWN "PASS", AS ON PICTURE ABOVE.

5. Flashing should be finished in 3 minutes max.

original link