Hello Sir, thank you very much for your help. My drive has been successfully revived using the ROM you shared. Next, I would like to share the revival process:

1. First, I used the ROM you shared and matched it with the ROM of firmware version SC02 via PC3000.
2. Then, I wrote the LOD file of SC02 into it, and my drive was successfully revived.

Next, I will upload the ROM file and LOD file of SC02 to facilitate research for others in need.

However, my original PCB was damaged. I found an identical PCB, wrote the ROM into it, and my drive started successfully and worked normally. But this PCB was taken from my normally functioning drive. Later, I wrote the same ROM data into the PCB of a damaged drive, yet the drive failed to start again. I can confirm that the PCB of this damaged drive is in good condition and has the same board number.

Thanks for sharing the results.
And fzabkar can help with the PCB if you understand electronics.

I have found a total of 4 PCB boards for drives. Among them, 2 are from normally working drives, and 2 are from damaged ones.

- Of the 2 PCBs from normally working drives, one is functional, while the other is not.
- Both PCBs from the damaged drives are non-functional.