JV33 BS model can work with es or ss ink, but you'll need BS chips always installed as this model allows you work only with BS ink, and printhead work configuration is slightly different than on regular JV33, it has different voltages, timings, etc. because this machine is supposed to work with Bulk Systems. So Rasterlink, or other rip software, will be always thinking you have BS ink and will be using larger dot as on BS, so you'll need custom profiles for SS ink.
To make it completely regular JV33 you'll need either replace its main pcb with regular JV33 pcb, or reflash ROM from JV33-S to your JV33-BS.
If you need help with replacing/reflashing pcb send me PM