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

DVR Recovery Support Map

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Here is a list of videos on Dolphin DVR Pro. product introduction, features and case studies.

Dolphin DVR users can make best use of the following free training videos and documents to have a higher data recovery success rate of CCTV DVR, digital cameras, video repair and forensic disk image.

Dolphin DVR Error Codes and Fixes

Latest Professional CCTV DVR Digital Camera Video Recorders Recovery Tool

How to Recover Lost Videos From One Unknown DVR Drive
How to Recover Lost Videos from Unknown Digital Cameras
How to recover deleted lost videos from unknown law enforcement video recorders
How to Recover Lost Videos from Unknown Car Video Recorders
How to Repair Damaged MP4 MOV 3GP Videos
How to Repair Damaged CCTV DVR Videos

How to Recover DVR Lost Videos and Play Videos Properly

How to Recover Lost DVR Videos Quickly

How to Access and Recover Lost Videos from Mercedes Benz Black Box
How to Access and Recover Lost Videos from DJI UAV Digital Cameras;

DJI Mavic3 UAV Video Data Recovery Steps
DJI Mavic3Pro UAV Video Data Recovery Steps
DJI OsmoAction4 UAV Video Data Recovery Steps

Hikvision CCTV DVR Video Recovery Steps
How to Access and Recover Lost Videos from DaHua CCTV DVR Systems
How to Recover Lost Videos from Korea kttelecops CCTV
How to recover deleted lost videos from WFS DVR video system
New CCTV DVR Video Analysis Solution for Best Success Rate

How to Recover Lost Deleted Videos from HanBangGaoKe DVR System
How to Recover Lost Deleted Videos from HuaYi DVR System
How to Recover lost deleted videos from ZhiLing DVR System
How to recover lost deleted videos from Uniview 0x1C DVR system
How to recover lost deleted videos from Uniview 0x11 DVR system
How to Recover Lost Deleted Videos from TP Link DVR System
How to Recover Lost Deleted Videos from HongWeiShiJie DVR System

Alexa ARRI Mini Digital Camera Video Data Recovery Steps
SANYO S7 jpeg digital camera video data recovery steps
OLYMPUS DIGITAL CAMERA D4220 jpeg video data recovery steps
KODAK V550 h264 digital camera video data recovery steps
Cannon LEGRIA HF R706 h264 digital camera video data recovery steps
Panasonic DMC GX85 h264 digital camera video data recovery steps
NIKON COOLPIX P510 h264 digital camera video data recovery steps
NIKON COOLPIX S6 jpeg digital camera video data recovery steps
NIKON COOLPIX S6300 h264 digital camera video data recovery steps
NIKON D7200 h264 digital camera video data recovery steps
NIKON L120 h264 digital camera video data recovery steps

Panasonic DC S5M2 H264 Digital Camera Video Data Recovery Steps
Nikon COOLPIX P3 JPEG digital camera video data recovery steps
NIKON D7000 h264 digital camera video data recovery steps
NIKON D3100 h264 digital camera video data recovery steps
NIKON Z30 h264 digital Camera video data recovery steps
KODAK M893 JPEG Digital Camera Video Data Recovery Steps

KODAK Z1012 IS Digital Camera Video Data Recovery Steps
NIKON COOLPIX W300 H264 Digital Camera Video Data Recovery Steps
Nikon S9100 H264 Digital Camera Video Data Recovery Steps
Panasonic DC GH5 H264 Digital Camera Video Data Recovery Steps
Nikon Z9 H265 Digital Camera Video Data Recovery Steps
Nikon Z6 H264 Digital Camera Video Data Recovery Steps

Sony Catalyst Unknown Digital Camera Video Data Recovery Steps
Sony ILCE 7C H264 Digital Camera Video Data Recovery Steps
Sony ZV E1 H264 Digital Camera Video Data Recovery Steps
Sony ILCE 7RM3 H264 Digital Camera Video Data Recovery Steps
Sony ILCE 7RM4 H264 Digital Camera Video Data Recovery Steps
Sony ILCE 7SM2 H264 Digital Camera Video Data Recovery Steps
Panasonic DC GH5S Digital Camera Video Data Recovery Steps
Sony PMW EX1R Digital Camera Data Recovery Steps
Sony ILCE 7M3 Digital Camera Data Recovery Steps

Sony PXW X280 Digital Camera Data Recovery Steps

How to Recover Lost Videos From Sony ILME FX30 Digital Cameras
How to Recover Lost Videos From JVC GY HM200 h264 Digital Cameras
How to Recover Lost Videos From Panasonic DC S5M2 h265 Digital Cameras

How to Recover Lost Videos Perfectly from Sony DSC RX10M4 h264 Digital Cameras
How to Recover Lost Videos Perfectly from Sony ILCE 7M4 H264 H265 Digital Cameras
How to Recover Lost Videos Perfectly from Sony ILCE 7RM4 Upgraded H264 Digital Cameras
How to Recover Lost Videos Perfectly from SONY ILCE 7SM3 h264 h265 Digital Cameras
How to Recover Lost Videos Perfectly from SONY ILCE 7M3 h264 Digital Cameras
How to Recover Lost Videos Perfectly from SONY ILME FX3 h265 Digital Cameras
How to Recover Lost Videos Perfectly from SONY FDR AX700 h264 Digital Cameras
How to Recover Lost Videos Perfectly from Sony DSC RX10M2 h264 Digital Cameras
How to Recover lost videos perfectly from Sony ILCE 1 h264 h265 Digital Camera
How to Recover Lost Videos Perfectly from SONY HXR NX80 h264 Digital Camera

How to Recover Lost Videos from Canon Digital Cameras;
How to Recover Lost Videos from Panasonic Digital Cameras
How to Recover Lost Videos from Sony Digital Cameras
How to Recover Lost Videos From BlackMagic Digital Cameras

Latest Free But Professional CCTV DVR Video Player Version 2.03

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ST4000NM0035 HDD Firmware Repair and Data Recovery Steps

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This is one successful ST4000NM0035 HDD Firmware Repair and Data Recovery case study for one Dolphin user in India.

Patient HDD ID:

Model : ST4000NM0035 03X4440 LENOVO
Serial : ZC187T35
Firmware : LJ87
Capacity : 7814037168 (3726.02GB)
0Bytes
Sector size : 0Bytes
Heads number : 7

FW version : MFAND29B1.LXN1.BW0B61.LJ87
FW package P/N : 100826175

Patient HDD Failure:

The data area was not accessed
MFT was damaged

HDD Repair Tools and Data Recovery Tools used in this case study:

DFL-Seagate hdd repair tool
DFL-DDP data recovery hardware tool

ST4000NM0035 HDD Firmware Repair and Data Recovery Steps:

01: ST4000NM0035 ROM backup and Unlock rom generation;
(This hdd requires one different method to generate the unlock rom, Dolphin users can select mode 2)
02: Write unlock rom and send unlock key to unlock the ST4000NM0035 patient HDD successfully;
03: Backup important Sys files;
04: Fix the translator issue: clear V4 and smart and then regenerate translator;
05: Fix the common slow issue;
06: Enter DFL-DDP data recovery software and scan lost partitions reversely for NTFS;
07: Easily found and recovered all lost data.

Users can watch Dolphin data recovery video channel here to see how Dolphin data recovery tools recover different storage medias at high success rate.

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Bitlocker Protected Partition Data Recovery Steps

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How to recover lost data from bitlocker protected partitions?

If users have data recovery tools, users can enter the backup recovery key(48-digit) within the recovery software and then users can use the recovery tools to extract the lost data directly.

If users don’t have data recovery tools, users can prepare one USB booting device to enter win pe os to decrypt the bitlocker protected partition and then copy the files directly to one safe place.

Users can find the bitlocker recovery key in the Microsoft account or search it in your local drives.
If the recovery key is completely lost, the chance of recovery is very low or impossible.

Download the document above to read the complete steps to recover lost data from the bitlocker protected partition.

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WD7500BPVX-75JC3T0 Undetected 1961 HDD Firmware Repair and Data Recovery Steps

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This is one more successful Western Digital 1961 undetected hard drive firmware repair and data recovery case study from one Dolphin user in Ethiopia.

Patient HDD ID:

WD7500BPVX-75JC3T0
PCB: 2060-771961

Patient HDD Failure Symptoms:

Undetected;
When trying to obtain details, nothing can be read and the patient hdd hung there.

HDD Repair Tools and Data Recovery Tools used in this case study:

DFL-WD hdd repair tool
DFL-DDP data recovery equipment

WD7500BPVX-75JC3T0 Undetected 1961 HDD Firmware Repair and Data Recovery Steps

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WD141KRYZ-01C66B0 hdd firmware repair and data recovery steps

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This is one very successful Western Digital HGST helium hdd firmware repair and data recovery case study from one Dolphin user in Turkey. The user has tried other software and solutions but failed to get the lost data back.

Patient HDD ID:

WD141KRYZ-01C66B0
14TB

Patient HDD Failure symptoms:

When trying to access data, full of bad sectors, no sectors are accessible
Status registers report UNC error and some other software report ABR error

WD141KRYZ-01C66B0 hdd firmware repair and data recovery steps

01: Connected patient hdd to DFL-SRP or DFL PCIe data recovery hardware;
02: Open DFL DDP data recovery software;
03: Power on patient HDD and wait until ready;
04: Click HGST translator recovery within the common repair section and wait until the log window reports ‘operation completed’.
05: Power off and on and users can access the data area successfully and all lost partitions, folders and files are available for immediate data recovery.

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WD Hitachi HGST Helium Drive Common Repair-One Click Fix in DDP

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One new common firmware repair solution-quick fix of WD Hitachi HGST helium drive UNC error is now available within DFL-DDP data recovery equipment.

When users are running the logical scan/bad sector scan, no sectors are accessible with UNC error reported and now this error can be easily fixed by one click in the DFL-DDP data recovery software.

Video demo on How to Recover WD Hitachi HGST Helium Drives by One Click 

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Toshiba HDD ROM Chip Recognition

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For some Toshiba HDD PCBs, it’s not easy to recognize the rom chip because there’re two similar chips which look like the same but actually different.

Example PCB numbers:

G003189A
G003250A
for MQ01UBD100

ROM chip: IC602
Close to main chip

Related Helpful Product: Toshiba HDD USB-SATA PCB Package Pro.

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WD40NDZW 11BHVS1 WD SMR 810033 Undetected HDD Data Recovery Steps

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Video case study and free WD SMR hdd data recovery training video: WD40NDZW 11BHVS1 WD SMR 810033 Undetected HDD Data Recovery Steps

Top recommended WD SMR 8x00xx HDD USB to SATA adapters for best success rate.

Must-read WD SMR HDD Data Recovery Cases and Tips

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ST5000LM000 Seagate HDD Data Recovery Steps

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This is one successful data recovery case study for one Dolphin user in India.

Most dolphin users can handle this kind of data recovery cases by themselves but for new users this case study will be very helpful to learn to improve data recovery skills.

Patient HDD ID:
Model-ST5000LM000

Failure symptoms:
Undetected HDD ID;
Data area was not accessible;

ST5000LM000 HDD Repair and Data Recovery Steps

01: make sure the patient HDD enter F3 T> and the com terminal works properly;
02: Unlock the firmware area;
03: Backup important SYS files;
04: View and confirm the nglist entries;
05: Clear glist, smart and regenerate translator;
06: Fix data encryption issue;
06: Open DFL-DDP data recovery software and all lost partitions and folders were recovered.

Users can add Dolphin teams ID: sales@dolphindatalab.com for live support.

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USB Flash Drive Data Recovery Tips and Tools

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USB flash data recovery cases are very common in all data recovery labs but not many data recovery engineers can recover the lost data from these USB flash patient drives efficiently.

Data recovery engineers need to have good knowledge of USB flash drive failure types and how to recover lost data from different damaged flash drives.

USB flash drive failure types:

  • Frequent or wrong connection or disconnection of USB flash drives to computers to get the USB ports unstable or even sometimes physically damaged;
  • USB flash drives are physically damaged and users need to open the usb drives and do some wiring or chip soldering to recover the lost data;
  • USB storage medias are aging and the read and write are very slow with many bad sectors;
  • Data loss caused by accidental power loss/unstable power supply;
  • Data loss caused by accidental file deletion, format, virus attack or system corruption.

Tools suggested for USB flash drives data recovery

Once there’s data loss on the USB flash drives and users wish to recover the lost data, users cannot continue saving any files further or cannot connect or disconnect again and again to avoid permanent data loss.

Any question is welcome to sales[at]dolphindatalab.com.

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