Help Need Optus 1.5 firmware backup

[Ulver]

Hello,

Just wondering if anyone has a backup of the Optus Galaxy firmware.

I tried using the info I have to get it with the FUS downloader but was unable to.

I'd like to flash it but I'd really like to have a backup first.

Some info from phone settings:
Model number: Galaxy
Firmware version: 1.5
Baseband Version: I7500DFII3
Kernal Version: 2.6.27
Build number: 76XXCSDCBALUM6375

Thanks