WDC firmware fix w/o pricey tools?

[saltwater]

Hello again!
All modules readed from the rom except the 0001. The error code is 5441 (SERVO_ERROR_CODE_BASE_SvirActSync)

mod 1 it's the directory module...and it's on SA. try to use the rom adaptives from the donor's pcb. if it doesn't work, then there's a problem with the HSA.

Thank you louis and fzakbar!
The donor was a different model: WD30EZRX-00MMMB0. The sick drive was fallen while it's powered. I think if i have a copy of WD20EARX-00MMMB0 firmware modules, then with WDR i can load overlay, and module list from file, and maybe i can access to the sick drive's SA.