i have an older OpenElec Box with this Hardware: Zotac ZBOX AD02 Barebone-PC (AMD E-350, DDR3-800, AMD Radeon HD 6310, WLAN). Is it possible to install the newest version of Libreelec on it?
It's possible, but results with AMD based graphics are mixed. First make a full backup, then upgrade to LibreELEC in the usual way (.tar file in the Update folder).