WD20EARX - head issue - can't edit the head map in RAM

[AdasRip]

I have case - WD20EARX-00PASB0. The owner had previously given it to an ordinary computer repair shop.
There they opened it without a clean room. They scratched the top plate and left fingerprints on it.
The heads looked like they had been torn from the ramp.

So far I have ignored the top surface condition. I swap the donor heads to see if it would ever start.
Unfortunately, it did not move. Heads clicking and spin off so I guess H5 fell.

I tried to edit the head map in RAM. However, LDR upload is needed for this.
When I try to load module 11 I get an error message.

Permanent ovl (11) data uploading Device Error Detected: "Unknown error. Error code: BFA0"

5c is loaded correctly.

When I transferred the heads back to the donor, the donor doesn't start anymore either

What is problem?

[d_d_recovery]

IMO: Media damage to the patient drive which is killing the donor heads.

[Maxim_TS]

AdasRip, Indeed, you need to remove any dust and dirt from inside first, then try new heads and RAM head map changing.

[AdasRip]

After peeling off the sticker from the inspection window, it turned out that the surface under the H0 head was filed.