Can't set full sized screen like before bios update.
But hope this help someone if need. To workaround about splash screen can setup the "Expansion Card Text" to "Enable" on "Boot configuration", it's NOT the correct configuration field but this seems that forces to show again the banner and key notices on boot process.
I hope Intel built corrections fast, mainly to return full sized bios resolution because, v0025 bios version resolution is impossible to read on normal current size monitors.
Thx!