They should both be fine provided you have the decrypted roms to go with: kof2k3nd.zip and samsh5nd.zip. Make sure that your current roms are valid with Romcenter.
Place your 270-p1.bin in the same dir as this and run the bat: http://consolevision.com/members/burnero/misc/270-p1n.zip It's like a full time job having these things up to date. Edit: This is a patch, obviously. The bank error still exists even with the corrent p1n. :/