I got a firmware for download on this link:
Toshiba, Samsung and TSST Firmware RPC1 Regionfree and original
It seems the right one, & it`s for an Asus computer. I`m just worried, if it`s not the right one, I guess I could do a system restore to correct it. I just don`t want to spoil a drive that works well in every other sense!!
Maybe I should download the liveupdate again (I already uninstalled it), & run it as an administrator, see if that works.