Apple HDV CODEC 1.4 is only made for Sony????

This is my question, since the apple hdv codec is support for XDCAM HD 422, I can't capture tape from my JVC PRO HD GY110U camera, this in FCP 6.0.3, but in FCP 6.0 I can capture from my jvc camera , but if I update to pro applications update 2008-01 I can't no capture from JVC camera or device. In FCP 6.03 , or in Final Cut with Apple HDV codec 1.4, when I tray to capture , the vtr it's ok in the capture window , but the capture window status say SEARCHING FOR MEDIA and no capture anything, another issue is the problem with the DV devices ( PREVIEW DISABBLE) same characteristics, vtr is ok but no capture anything. I hope that this problems will be resolve for the apple team. At this moment I can work with DV devices (24PA footage) and JVC pro hd(720P@24) devices well with this configuration:

PowerPC G5 Dual, system 10.4.11, quicktime 7.4.5(25) (67), final cut pro 6.0.
MacBookPro Intel core duo, system 10.5.2, quicktime 7.4.0(92), final cut pro 6.0.2

The major problem is , if I need to work with xdcam ex footage I will be need update to fcp 6.0.3 'cause the apple hdv codec needed for the xdcam transfer is Apple hdv codec 1.4, that come with the FCP 6.0.3, but, if I updated for that , I can't capture HDV PRO HD footage , and, probably the problem with the DV devices starting again. Note that We work with Firewire to capture , I have not a HD CARD or AJA to capture. Note that some people report the same problem with Canon cameras.

Well , if any one report this problems: SEARCHING FOR MEDIA or Preview Disabled , I hope that my little report help in something.