Seagate goflex finema drive lost data

hi ive bought a seagate 2tb home cinema goflex 2 times this is 2nd time its lost data saying that folder is empty. at 1st i thought it was just a hick up with transfer i was doing wrong. so i returned it , right i moved some files well movies and again it says folder is empty or files are corrupted or data not readable , so my question is is this goflex hard drives all faulty??? or am i just unlucky getting two in a row. so im thinking ok i wil reformat the drive an try again. as 2 tb is alot to lose yes ive back ups off most files, but g/f lost her boxing folder which cannot be replaced or do i give this hard drive a mis an except ive a good media player best on market but rubbish hard drive sorry seagate but i was looking forwards to 4tb or higher but not now ill just buy a cheap hard drive and again back up my stuff as to cheap is asking for problems how do i upgrade the firmware please ,?> many thanks to who reads my blogg and bad english an grammer