You're talking about Kirvin CS 3.5 right? Well the reason the card doesn't work is because the SDHC drivers were not in that ROM for card bigger than 2GB. First let me stress, never call Verizon for issues such as this, only call if you're needing a replacment. Since you updated to the new ROM you have the new Bootloader, since Kirvin ROM is old, the easiest way to get this back on is revert the bootloader, the thread is found here,
http://forum.ppcgeeks.com/showthread.php?t=33076
If you use a newer ROM, like mine for example the drivers are already loaded. But, CS 3.5 will need the SDHC cab found here,
http://forum.ppcgeeks.com/attachment...6&d=1254501009
Have fun, the Apache is a great phone I just got me two more
If you need help just ask.