Pues probando y no actualiza.
A ver mañana asi hay suerte.
Esto es lo que pone en el muro de facebook de motorola.
Motorola Europe The 3.1 update for Motorola XOOM™ outside the U.S. has started. Owners in Europe can expect updates over the next several weeks until the roll out is complete. The 3.1 update for non-U.S. devices, in addition to many other improvements, also includes SD card activation. Release notes will be made available in each region, functionality varies by region.
Habrá que esperar algo mas. Impaciente esto.