I don't know about the UD3, but on the UD7, you CAN remove the BIOS chip, it just isn't very easy. They are designed to be permanently affixed.
You can pry them up carefully, or just snip them off and clean it up without the chip there, then solder the new one in, being sure to solder it in the same way the old one was out. Really, if you do it correctly it SHOULD work, but that is no guarantee.
If you don't have a warranty and have nothing to lose, I'd carefully snip off the old one, de-solder the old legs and clean it up the solder as best as possible and try the new one. Be sure to take pictures of the way the old one is oriented and how the pins go into the board, etc.
If it is under warranty, just send it in and take whatever loss you get in the shipping, trust me it is a lot better to do that then to ruin a perfectly fine motherboard.
In the future, try not to use utilities to flash your BIOS. Doing it manually is ALMOST ALWAYS better. Also, if you haven't flashed a BIOS before, then don't do it without getting help first. Flashing the BIOS is dangerous if you don't do it correctly or something goes wrong.