Use WinRAR to unpack the bz87510a.86a.0125.p34.ib.exe, after you unpack again the SW.EXE with WinRAR, then you get the P34-0125.BIO.
kvtn007, each mainboard section of the intel website should have an alternative link for the bios binary (.bio) alone as an option. Try to find it by following the section upward.