Compaq Presario C300EA bios help

Recommended by Wim's BIOS...

hi guy's
hope someone out there can help me as i have two compaq c300ea laptop's.
i am looking for a bios verion F.25 wich i have on one but like to change other one wich only have the F.24 bios. have contacted hp who have told me there is a F.25 bios but not listed on site then say the latest bios on site is a F.24 for this laptop. but there must be one as one of mine as it?? as i wish to upgrade the processor on the one with the older bios. or maybe someone know how i can back up my F.25 bios & use it on the other laptop to upgrade it.
so hope someone out there can help on where i can find it to sort this prob
thank's