RiDisc 8X DVD-R not recognised by BTC drive (IDE1004)

Hi Forum,
I wonder if anyone can advise? I have a BTC DVD+/-R/RW (supposedly) IDE1004. It has served me well for my needs but I recently bought RiDisc 8X DVD-R and the damn thing does not even acknowledge they exist. I am still “learning” and found a flash thingy for updating my drive but it has made no difference. I was told at the store even thought the discs are 8X my 4X drive should still use them ok. I am at a loss. Any help would be magic.