I took a quick look at the system and I wouldn't bet on it.
From my uninformed perspective, it looks like this is a non-Motorola system. I would guess a Harris system?
If that's true, then it's quite likely the system doesn't use the typical base frequency that Motorola systems use. This base frequency is hard coded into the special P25 XTS3000 firmware.
If that base frequency is indeed different, then no XTS3000 will work.
Once again, I don't have local knowledge of the system but the fact it's not using the typical BEE00 WACN that Motorola typically uses, makes me think this is not a Motorola system and it might have a different base frequency.
The OP would need to check what the base frequency is but given the fact he can't figure out the programming, I don't think that's going to happen.