FIREWIRE DRIVERS for G5. Unknown Device Message

I updated a G5 that originally came with 10.3 to 10.4. When I did it, I lost the Firewire Drivers and it reads Unknown Device.
Where can I Find these Drivers? This is my actual config.
Machine Name: Power Mac G5
Machine Model: PowerMac7,3
CPU Type: PowerPC G5 (3.0)
Number Of CPUs: 2
CPU Speed: 2 GHz
L2 Cache (per CPU): 512 KB
Memory: 2 GB
Bus Speed: 1 GHz
Boot ROM Version: 5.1.8f7
Please Help./

Hi. Well - Apple FireWire "trouble-shooting" is here
http://docs.info.apple.com/article.html?artnum=303598
but I would check the website of the device manufacturer for up-to-date drivers - and possibly try a FireWire reset, bottom of the page here
http://docs.info.apple.com/article.html?artnum=88338
If none of this works, re-installing the combo OS X update may help. (Personally - I disconnect all FireWire devices while updating - I still remember the amusing 10.3.6 incident...)
Good Luck.

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