Typically if you get a hold of the BIOS ROM that needs to be flashed then you can do it from a DOS boot disk, that's how most of the BIOS update programs work anyway.
NOTE: Updating your BIOS is a dangerous procedure, I am not responsible for any damage that may come to your computer should you choose to follow the following instructions, it may just brick it, so be careful.
For the Presario F730US, do the following:
1) Get the exe from here (check the version and everything):
2) Use p7zip to extract it and you should get a file called '30D3F1F.WPH' among lots of other files, that's the BIOS file that must be flashed.
3) Make a DOS boot floppy or boot CD like it says here:
Note that you should try to find out what kind of BIOS you have, is it an award BIOS ? If it is then that last link is good, if not you'll have to find a program other than awdflash, there exists uniflash as well as other DOS programs that can flash BIOS images, make sure your chipset is supported.
For the Acer Aspire 5040, extract the zip file and you'll notice an 'AB2.BAT' run that from the DOS boot disk.