Just an update on this matter in case anybody is interested.

I succesfully requested the refund. The seller even claimed that their product is geuine and regconized by Samsung Magician. I requested the evidence video and they couldn’t provide it.

I had to plug the SSD into my PC for some hours trying to benchmark and check it with Samsung Magician so the seller also was trying to claim I used their product, which they failed.

Hence, always check the serial numbers on the box and SSD case before plugging it in to avoid any potential troubles. If it’s fake SSD, the serial numbers will tell it right away.

Manufacturing date is 2023 Apr, which is kinda new. I guest the old firmware is because Samsung Magician can’t detect this SSD as genuine so it can’t update the firmware