Samsung hard drive firmware bad data recovery HD502HJ

Case:
Customer descriptions should just take about a year. There was a sudden power outage once a few days ago, and the hard disk was not identified here.The customer immediately found the data recovery center through the Internet.

Solution:
After the engineer changed the firmware module of the hard disk to damage, the markup firmware module was damaged; and then used UDMA to repair the damaged module to repair and read; finally