Question About HTC App OEMs

[KindGnome]

Long time lurker here...I have searched and searched until have about drove my self nutz. Where do the ROM developers get the latest HTC system/application OEMs from???

I have been cooking my own personal ROMs for my HTC Titian and just got a Touch Pro. I would like to continue cooking my own ROMs and have now decided to include the HTC stuff I have pasted on in the past.

Thanks in advance for any input...