ST4000DM001-1FK17N HDD PARTIAL SECTOR ACCESS DATA RECOVERY STEPS-From Dolphin Data Lab https://www.dolphindatalab.com

1. Successfully Recovered Data from STSuccessfully Recovered Data from STSuccessfully Recovered Data from STSuccessfully Recovered Data from ST4000DM0014000DM0014000DM0014000DM001----1FK17N1FK17N1FK17N1FK17N
This is one remote support case we did for a Brazil user today.
HDD ID
Model number: ST4000DM001-1FK17N Serial number: W4J1P31J
Firmware: CC49 Capacity: 4TB
Heads: 7 Family: Crawfrod (Family ID:79)
Issue/Symptom
1. Firmware got locked
2. Once power up the drive, Dither and other errors information keep reporting under COM terminal.
3. Work very unstable, it takes a long time to get ready.
4. Partial access
5. All data is not allowed for access.
Solution
Dolphin Data Lab engineer performed the following steps:
1. Power on the drive, waiting until the error message under terminal get stopped, then go to F3 T>.
2. Unlock the drive: pls note that this model come with the LM structure, so we need to select LM series
to read ROM. And the Unlock ROM can only be created manually at present. The program will be able
to generate it automatically in next update.
(Regarding the detailed steps and tips about the unlock steps, pls refer to our previous case study)
https://www.dolphindatalab.com/seagate-st2000lm007-rosewood-unlock-steps-and-data-recovery/
3. Back up the most important sys modules (including 1B, 28 and 35 module)
4. Check NG list and clear it.
5. Initialize ID
6. Clear G list and regenerate
7. Scan the drive: the whole drive can be scanned smoothly under DFL Seagate repair program.
Any question is welcome to email to sales@dolphindatalab.com or add Dolphin Skype ID: dolphin.data.lab.