Hp downgrade BIOS F.40 to F.34 (hp 255 g7)


I have a hp 255 G7 computer, and since I updated the bios to the latest version it doesn’t work well, especially the usb ports. They disconnect and connect. In addition, the notebook gets very hot, I have talked a lot with hp about this and there is no solution with them, I tried to download or downgrade the bios but the application does not allow me to do it, it says that my equipment is not compatible, I have tried through hp diagnostics tool and says that the file signature is not valid. Can anybody help me?