Here is a tutorial how to make Backup on Vu+ decoder under a OpenBH 4.1 image. For this tutorial you need. Material: Vu + ZERO, UNO, DUO, DUO 2, ULTIMO, SOLO, SOLO 2, SOLO SE, zero 4K, Uno 4k, solo 4k, Ultimo 4k, DUO 4K USB STICK format  FAT32...