You can go to Smartphones, Cell Phones & Smart Phones at BlackBerry.com, select your region, go to support I believe it is, then device OS iirc, and then select MTS, Sasktel, Alltel or that other one and download from there... Sorry I'm not on a computer or I'd look up the exact link...
As was already mentioned, there is no official OS 5 for VZW yet, however just delete the vendor.xml file and you can install it on your VZW device. (I did)
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I'm pretty sure there's a .419 OS thread in the BB OS forums so that might be worth a look. Also verizon hasn't released 5.0 yet, but should be very soon.
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