Uboot - the small programm which start first, before all other software, when receiver switch On. It contain enumeration of sturtup setup: what should be started, in which sequences, etc. One of most importany function of uboot, - impossibility to kill receiver if something going wrong during flash base firmware image.
try reflashing with another image nlb8728 or SifTeam r8873 for IP9000.How do i delete this flashed image from the receiver to start all over again. Please help. Thanks from Spain.