Sprint HTC Hero :: 2.1 ROM's (Incoming Calls / Messages / GPS)

I purchased the HTC Hero from Sprint around a week ago, and it came with a stock 1.5. Had no issues at all, so today decided to try out the leaked 2.1 RUU. Updated without a hassle, but I've been experiencing some issues. This led to me repairing the bootloader and then trying DamageControl 2.08, and now finally fresh 2.0d. All installations went perfectly, nothing to call home about.

It cannot automatically detect my timezone, and it has no clue as to my location for weather nor other features. When I enable the GPS to go onto Maps, it locates me as around 1,000 miles off the west coast of Africa, whereas I'm in Pennsylvania, USA. I can call my phone from another line, but no response on my phone (no calls received, nor missed calls). When voicemails/messages come in, they flood in (10 new messages, etc, that have all stacked up).

I'm using the Wireless Tethering that comes with Fresh 2.0d, and I used PDANet/EasyTether prior to now (as my sole internet is tethering). I'm wondering if this could have at all affected it. Even with tethering disabled for a good hour, still nothing can reach me. If anyone has any suggestions, that'd be greatly appreciated. (Perhaps a radio update?)