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This is one very successful Western Digital SMR hard drive firmware repair and data recovery case study for one Dolphin user in India. Best Data Recovery Solution of WD SMR HDDs.

WD SMR Patient hdd id:

Model number-WD40EZAZ-00SF3B0
PCB number: 810011

WD SMR Patient hdd Failure symptoms:

Spin up and down and not possible to access data area

Firmware repair tools and data recovery tools used in this case study:

DFL-SRP for WD firmware repair tool
DFL-DDP data recovery equipment

WD SMR Patient hdd firmware repair and data recovery steps:

01: Backup up original WD SMR Patient hdd ROM by ROM chip pin reader;
02: Generate unlock rom by DFL-SRP for WD firmware repair tool；
03: Write unlock ROM to original 810011 PCB;
04: Connect PCB only, enter DFL-WD firmware repair software by kernel mode and then disable 411;
05: Install the PCB to patient HDD and backup key firmware modules, specially module 190;
06: Repair module 190(unique 190 repair assistant);
07: Fix SMR slow issue;
08: Auto load 190 to ram within DFL-DDP data recovery tool disk image setting;
09: Access to data area and all lost partitions and folders were available for immediate easy data recovery.