If you hav'nt a single backup from /home/gx/local/enigma_db , really ... nothing to do ! However , you must go through the STB menu (press at the command "Menu" and follow from Antenne setup , and , I think , all sats are listed immediately !
Remember : before any soft setup , a single backup of directory above is the best way , to protect your date . You may do a "tar cf from enigma_db to a pendrive FAT 32 , as /tmp/UD0 . A good linux knowledge is the key for the sucess ! Good chance and enjoy !