pjotr-pjotrovic.beller wrote:Source of the post
possible to swap head without need to read firmware
Swap the head, sure why not.... actually get the drive to work long enough to read any data, probably not. It's pretty common with these to need to disable things in the firmware to stabilize the drive after replacing heads. Without proper tools, maybe you'll get lucky and it'll work out, but that's a very small minority of cases.