This is one more successful Seagate ST1000LM035 undetected LED HDD firmware repair and data recovery case study from one DFL user in Indonesia.

Patient HDD ID:
Model number: ST1000LM035 1RK172
Family: Rosewood A5

HDD Repair Tools and Data Recovery Equipment Required:
DFL-SRP USB3.0 all-in-one Data Recovery Equipment

Error Messages within COM Terminal:

‘Boot 0x80M
Rst 0x80M
Srv DETCR init 0x0000


(P) SATA Reset



(DOS Table) Worst Count: 00000FF8 At SU: 0000523E NT: 00000000 OT: 000000C5
(MC POR Duration): 000000007B

Intel 6G->3G

Send Status: COMRESET seen

CSpd= 3Gbps


Update Mask – 000000000D0A3EB8 – 00000008 – 00

Update Mask – 000000000D0A3EC0 – 00000008 – 00

Starting LBA of RW Request=0001A13C9F Length=00001DD0

ProcessRWError -Read- at LBA 0001A147F9 Sense Code=43110081

Common path start quit now
ProcessRC: 00000000,00000000
SkipLen: 00000000
ReadContinuous: 01A1468F,00000350
NumUDEs: 0000002B,00000031,00000236
Passed: 00000080,00000153,000002FB


LED:0x000000BD FAddr:0x0000780F
LED:0x000000BD FAddr:0x0000780F
LED:0x000000BD FAddr:0x0000780F’

View and watch the Undetected LED ST1000LM035 1RK172 HDD Firmware Repair and Data Recovery Steps video case study here

Any question is welcome to or add Dolphin Skype ID:

The following is one email from one DFL user in Germany asking for the compatibility between two Seagate hard drives, one of which requires head swap.

‘DONOR is ST1000DX001
Patient HDD: ST1000DM003


i have here a Seagate ST1000DM003 – Drop down failure.

In first test i can see error message = damaged heads / and may be platter damaged

FAIL Servo Op=0100 Resp=0003
ResponseFrame EC40 0046 03B2 4900 0008 0000 0000 0000 0966 0000 0000 0000 0000 0000 0000 0000 57D1 F98F FFFF 2000 2412 0000 0000 4947 0000 4947 0000 007F 0000 0020 0012 0004 0000
FAIL Servo Op=0100 Resp=0003

I have only one donor HDD – ST1000DX001 and i know many people change heads between different hdds
and the preamp is the same.

Question: should i change the heads without create adaptive rom? (DM/DX possible !?)
or must i create a adaptive rom?

Or does it make no sense to swap the heads, what is your recommendation?

Patient: ST1000DM003 – 2 Heads
Preamp: B2 03
S/N: Z1D
PN: 9YN162
Family: Grenada

Donor: ST1000DX001 – 2 Heads
Preamp: B2 03
S/N: Z1D
PN: 9YN162
Family: Grenada”

For Seagate hard drive head swap, users need to check the preamp type, family, PCB number and sometimes head map, for some drives, even they have the same model number, they may have different head map.

After head swap, if the drive clicks, users need to create adaptive rom and write adaptive rom and try again. For the head swap cases, it’s very important for users to air blow the platters and the hdd inner parts and also need to check the surfaces carefully.

Tools required to fix above cases:

DFL Seagate hdd firmware repair tool
DFL DDP data recovery equipment
Seagate hdd head replacement tool

Any question is welcome to or add Dolphin Skype ID:

This is one physical hard drive firmware repair and data recovery case study.

Patient HDD ID:
Family name: Yarra_5400
Family ID: 75

Patient HDD Symptoms:
Capacity 0

HDD Repair and Data Recovery Steps:

1, Backup ROM;
2, Backup SYS files but copy 0 failed, copy 1 ok;
3, Translator view ok, V4 clearing ok but when trying to regenerate translator, the regeneration cannot be completed and showing R/W error and file error.
4, Head swap by Level 2 head replacement tool;
5, Enter DFL-DDP data recovery software, users set up one disk image project, set up head map and start image, finally all data was imaged successfully.

Video case study: Seagate ST500LT012 Capacity 0 Head 0 Damaged Data Recovery Steps

Any question is welcome to or add Dolphin Skype ID:

This is one very interesting Seagate ST5000LM000 data recovery case study from one DFL user in Mexico.

Originally the patient Seagate HDD had MCMT corrupted failure and no host failure reported in the COM terminal.

Patient HDD ID:

Family: M11-A1

Patient HDD Failure Symptoms:

Not detected;
Wrong data locations, data offset after translator regeneration with unlock ROM;
All sectors red if writing back original ROM

ST5000LM000 Data Recovery Steps:

Backup ROM;
Generate Unlock ROM;
Write unlock rom, power off/on and send unlock key;
Backup nglist and other important SYS files;
Clear glist and smart;
Regenerate translator;
Fix data offset/wrong data locations/unrecognized data by DFL Seagate HDD Repair Tool;
Open DFL-DDP data recovery software and all lost partitions were found correctly and finally all lost data was recovered.

Any question is welcome to or add Dolphin Skype ID:

Dolphin Data Lab is now releasing the new software upgrade program DFL ST V1.7 and all Dolphin users with Seagate hdd firmware repair tool can download this new software for free.

Users of DFL PCIe for Seagate, DFL-SRP USB3.0 for Seagate can both use this new software easily by simply downloading and installing the all in one setup software. Read more

Dolphin Data Lab is releasing the new software upgrade for DFL-FRP for Seagate and the new Seagate firmware repair functions and features are as below:

1, SYS file read and list is added;
2, Common Fw extraction (LOD) file extraction is added;
3, Smart view by ATA is added;
4, NG clearing by COM port is added for new F3 drives; Read more

Dolphin Data Lab is one of the most professional manufacturers and suppliers of data recovery tools and hdd repair tools and we began data recovery business from data recovery services by using different data recovery tools and our own DIY data recovery solutions and until recent two years, we planned to develop our own commercial data recovery tools  and have them available to the international market. Read more