Download Dualboot Linux Xubuntu 14.10 / Android 4.4 firmware v.0.2.1 for Ugoos UT3 TV Box from here or from here. Download previous firmware from here.
Archive name: UT3_xubuntu_2.1_andr2.0.5.b
Archive size: 901 MB
Boot: uboot_ugoos_V2.17.02.bin
ADS HERE !!!