if the smart sensor has blown and you are able to actually get anything off of it, you have won the lottery.
that guy who wrote that smart utility program is a genius. a smart error means throw the drive way you cannot fix it. so he tells you the specific reason for throwing it away and then charges for it. which is something the hard drive companies do for free, with programs like SEATOOLS and Hitachi DST
the computers bios checks the smart sensor at every boot up. that is something you do not have to pay for.
heck, apple diagnostics probably reads the smart sensor, and every mac comes with it for free.
once the smart has blown there is nothing you can do except salvage your data and throw your drive out
what do you get if you actually pay for that program? what could it possibly do that is worth paying money for? maybe it calls seagate with your serial # and sees if your drive is under warranty and prints out a shipping label?
a smart error cannot be undone.
once the smart has blown there is nothing you can do to fix the drive. and you have to throw it out. if the bios / disk utility detects a smart error, save your money, don't pay for any utilities that claim to give you a detailed smart report. save that money for a new hard disk
the term "soft error" or "hard error" when it comes with bad sectors is meaningless.
your hard disk came with bad sectors. it also came with spare sectors. if the hard disk's intelligence detects a bad sector over its operational life , it is reallocated to a spare sector, without the computer even knowing. once the computer finds out about a bad sector, it means your drive has failed. and you throw away the drive
smart sensor blown means "hard",it means there is a irrecoverable physical hardware error to the drive and the drive can't fix it and it has failed, and no paid utility will be able to do anything.
if your hard drive is under warranty, they will ask you for an error code from their free testing program , like sea tools before they replace it. they won't give you an RMA if you tell them i paid for another program
if the smart sensor wasn't blown then its possible to use hdd regenerator to look for potential weak spots and to revive them