this is a classic case of when an upgrade is absolutely not necessary and just makes it worse.
technically you could use an old 286 with DOS and file transfer via RS232 will work.
nothing newer is required. if you can, just go back to the old system (probably XP I assume) and save time.
alternatively check your COM port settings in the control panel and/or the COM settings in the transfer software.
if the old cable worked you definitely don't need a new cable. the problem is software related.