Can't get out of SPL-2.07 Bootloader Screen

[mantispid]

Alright, here's the deal:

I bought a used Alltel WM5.0 HTC PPC6800. I registered my ESN with Alltel, and when the phone registered and rebooted, it got stuck in the bootloader screen. I believe it said something along the lines of SPL-1.4x.

Anyway, I didn't quite know what to do, but wanted to upgrade to WM6.0 anyway from Alltel's website link through HTC... So I installed that ROM. It was stuck in bootloader, so I reset it. Then WM seemed to boot and it loaded the Alltel custom apps/etc. Then it reset and was stuck in bootloader again with the following display:

TITA100
SPL-2.07.0000
CPLD-9

I upgraded using RUU_TITAN_ALLTEL_WWE_3.35.671.9_RS_TITAN_03.37.20_ Alltel_2.01_AM_PPST_Ship.exe


I've tried re-flashing and no-go. I tried the titan_exitbl.exe program, and it just resets the device back to the bootloader screen.

If I try loading the older RUU_TITAN_ALLTEL_WWE_2.14.671.3_1.40.00_Altel_0816 _NV132_Ship.exe ROM, I get an error message, "INVALID COMMAND".

What the heck can I do to fix this situation? Many thanks!