You can view the DFL case studies and FAQs here so that you can understand how to use the DFL data recovery tools better

This is one successful data recovery case study for one Dolphin user from Mexico who is using DFL PCIe data recovery express.recharge version.

Patient HDD ID:

Model : ST2000LM010-1RA174
Family: Rosewood A5
Serial : ZDZBNJP7
Firmware : SDM1
Capacity : 3907029168 (1863.02GB)
Sector size : 4096
Heads number : 4

FW info : Obtained
FW version : RT0898.SDM1.CC0801.SDM1
FW package P/N : 100854747
FW ID : 00410701
FW creation date : 2019/05/26
FW creation time : 20:32:04
CFW version : RT08.SDM1.01556940.00410701
SFW1 version : 8975

Modules list : Obtained
Modules number : 55

Failure Symptoms:
Long time to get ready
Many LBA read error in COM terminal
Data area is not accessed

Due to the firmware area lock, users need to backup rom first, and then generate unlock rom, write unlock rom, power off and on, send unlock key, backup important firmware modules, fix media cache issue, clear glist, confirm nglist entries, regenerate translator.

After above firmware fix, Dolphin engineer opened DFL-DDP data recovery software to get all lost data back by direct file extraction.

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I have 4tb wd external hard disk purchased one month before. I accidentally click on format hard disk become 0 byte. I use some data recovery software but no data show. How to recover data?

This is one email from one single pc user asking for data recovery solutions to recover lost data from above WD 4TB external hard drive.

For this kind of format case, the recovery chance is on the windows os and users can confirm the failure detail by checking the hdd by winhex and find out if all sectors are 0000 or not.

Some format cases cause all 0000 and the data is gone; and some other format cases don’t affect the hex data much and the data is still there.

If the format case doesn’t have other failures, users just need to use data recovery software such as r-studio to scan lost files.

If the format case has bad sectors or firmware corruption, users need to use data recovery hardware tools such as DFL-SRP all-in-one data recovery equipment or DFL PCIE data recovery express to fix firmware issue or image the patient HDD or users need to use DFL-DDP to recover lost data by file types.

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For WD SMR HDDs, they usually have firmware lock and SED V2 lock issue. To unlock the firmware area, users can use firmware unlock PCB. To fix the SED V2 issue, users can use the following methods:

1, Solder wires on original USB PCB;
2, Use
3, Use Data Unlock SATA Connectors;

Now we have another method: When the original PCB is physically damaged, users can only transfer the main controller IC to firmware unlock PCB to fix SED v2 issue.

The following two Main Controller IC Reballing Stencils are available now to make the MCU transfer job easier and more successful:

WD 800041 800022 88i1047-NDB2 Main Controller IC Reballing Stencil
WD HDD PCB 88i1053-NXZ2 Main Controller IC Reballing Stencil

WD HDD PCBs with the same 88i1053-NXZ2 Main Controller IC:

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WD 2060-810011 is one very common western digital SMR hard drive PCB number and drives with this number have MCU lock and SED lock.

One thing is important for WD 2060-810011:
This PCB number has two types:

WD 2060-810011 HDD Firmware Unlock PCB-3C Version
WD 2060-810011 HDD Firmware Unlock PCB-1C Version

The 3C version is more common in the market but the 3C and 1C version are not compatible with each other.

Before users buy this WD 2060-810011 unlock PCB, users need to check chip number on the PCB in the picture above.

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This is one successful data recovery case for Seagate LM Rosewood patient hard drive from one DFL user in India. Happy client again with DFL SRP data recovery hardware tools.

Model : ST1000LM035-1RK172
Serial : ZDE3D606
Firmware : SBM3
Capacity : 1953525168 (931.51GB)
Sector size : 4096
Heads number : 2

FW info : Obtained
FW version : RO08B6.SDM2.CC4676.SBM3
FW package P/N : 100821660
FW ID : 00211320
FW creation date : 2017/06/02
FW creation time : 01:36:16
CFW version : RO08.SDM2.01257352.00211320
SFW1 version : 6B6A

Boot 0x80M
Rst 0x80M

T:0x0012 0x0051BB95
Srv DETCR init 0x0000


(P) SATA Reset


EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

EDAC Value = 00000000FFFFF844

(DOS Table) Worst Count: 00000000 At SU: FFFFFFFF NT: 00000000 OT: 00000000

MCMT table is corrupted

Intel 6G->3G

Send Status: COMRESET seen

CSpd= 3Gbps


MCMT table is corrupted

Simple steps to fix above case by DFL-Seagate hdd repair tool and DFL-DDP data recovery tool:

1, Unlock Firmware Area;
2, Backup important firmware modules;
3, Media cache fix;
4, Clear G-list and confirm the NG-list entries;
5, Regenerate Translator;
6, Image patient HDD or extract lost data directly by DFL-DDP.

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Dolphin team have created new WD smr hdd firmware repair functions to repair and recover lost data from these drives at a higher success rate.

Sector 000000 is one very common problem in the Western Digital SMR hard drive data recovery cases due to the module 190 loading failure to RAM or module 190 corruption.

Within the new DFL hdd repair and data recovery software, users can find very good functions: module 190 repair and module 190 auto loading(T2 auto loading) to RAM and this auto T2 loading is unique and helps to fix many cases other tools cannot fix.

Dolphin engineers will teach users how to backup the module 190 perfectly and this is the most important step to fix WD SMR cases. Next users can use the T2 auto loading tech. to fix cases such as the sector 000000 firmware issue. If T2 cannot be loaded automatically, after power reset, the HDD can be sector 000000 again.

Watch the WD SMR HDD Sector 000000 190 Failure Data Recovery video case study here:

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For IT engineers or data recovery engineers with one or two video recovery cases or for individual video monitoring system users who want to recover the lost videos by themselves and don’t want to send their video devices to third parties, Dolphin DVR Pro. One-Week version is the best choice.

If users have many video recovery cases including CCTV DVR video recovery, digital camera recovery, video recorder recovery and video repair cases, users can buy Dolphin DVR Pro. business version directly or upgrade from the one-week version to business version.

Dolphin DVR Pro. has 4 software modules and users can handle 4 video recovery cases at the same time. One CCTV DVR recovery case, one digital recovery case, one video recorder recovery case and one video repair case.

The Dolphin DVR Pro. one-week version can help users to fix many cases and is very cost-effective and price friendly.

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There’re multiple similar chips on these WD SMR HDDs with PCB number 2060-800077 and 810011. Users are usually confused to find out the correct ROM chip.

The following are the correct ROM chip location:

WD 2060-800077 HDD Firmware Unlock PCB, click here
WD 2060-810011 HDD Firmware Unlock PCB, click here

When users are trying to use above firmware unlock PCBs, users need to use HDD ROM Chip Pin Reader to read the original rom and write the original rom to the unlock PCB and then install the unlock PCB to original HDD so that the original HDD firmware area can be accessed. If users don’t have HDD ROM chip pin reader, users need to solder the original rom chip off and solder it on to the unlock PCB rom chip location.

Please note: firmware unlock pcbs help only to access the firmware area and don’t bypass the SED V2 data encryption. To fix the SED V2 data encryption issue, users need to use HDD USB-SATA Wiring PCB Pro. or Data Unlock SATA Connectors.

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This is one great case study on how to access and recover lost deleted videos from Mercedes Benz Black Box for one Dolphin user in South Korea.

Users can watch the data recovery video here to check the detailed steps.

In Dolphin DVR Pro. V3.25, Mercedes Benz Black Box is not added to the support list directly but this doesn’t affect to get the lost videos back from Mercedes Benz Black Box. For all cameras or video recorders, users can use this same method to recover lost videos.

Now let’s check the following detailed steps:

Step 1: Users need to have and use Dolphin DVR Pro. Version 3.25 or above;
Step 2: Get sample videos by Winhex, R-studio or Dolphin DVR Pro.;
Step 3: Select the Camera software recovery module;
Step 4: Load Mercedes Benz Black Box image file;
Step 5: Select Unknown Camera video system;
Step 6: Select Deep Analysis(Recommended);
Step 7: Right click to add sample videos and start video recovery from the blackbox;
Step 8: Select the wanted dates and time to recover.

Users want to check more details about Dolphin DVR Pro. here.

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Dolphin Data Lab keeps improving all existing hdd repair tools, data recovery tools and developing new data recovery tools at the same time and today the new Dolphin DVR Pro. V3.25 is released with many great video recovery solutions.

All Dolphin DVR users can download the latest CCTV DVR data recovery software V3.25 from Dolphin software download center or from Dolphin user-only forum.

What’s new in Dolphin DVR Pro. V3.25?

1, More friendly and nice operation interfaces;
2, More new detailed digital camera models are added:
Canon EOS 5D Mark III
Canon EOS 5D Mark IV
Canon EOS 6D
Canon EOS 6D Mark II
Canon EOS 60D
Canon EOS 70D
Canon EOS 80D
Canon EOS 90D
Canon EOS R
Canon EOS R6
Canon IXUS 115 HS
Canon IXUS 310 HS
Canon PowerShot SX620 HS
Panasonic AG-DVX200
Panasonic AG-GH4
Panasonic AU-EVA
Panasonic DC-GH5
Panasonic DC-S5
Panasonic DMC-GH4
Panasonic HC-WXF995M
Nikon D3500
Nikon D7500
Hero4 Silver
Hero5 Black
Hero8 Black
Hero9 Black
HP F650X

3, Multi-level CCTV DVR brand auto detection has been improved;
4, To clear and save logs is added;
5, The video filtering size has been modified from 2M to 512K so that users can see more small fragmented video files, users can change this size manually according to the actualy video info in the DVR CCTV drives;
6, Extracting sample videos is added;
7, Easier to add sample videos for unknown digital camera recovery or video recorders;

8, Many more checksum options are added for digital forensic use:
CRC16 / CRC16-CCITT / CRC32 / FCS16 / FCS32
GHASH32-3 / GHASH32-5
MD2 / MD4 / MD5
SHA1 / SHA256 / SHA384 / SHA512

For the best CCTV DVR success rate, cheers!

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