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