Title: ADATA UV128 64 GB (VID_125F&PID_0100) - Write protected / I/O error on clean, read works fine.
Hello everyone,
I have an ADATA UV128 64 GB USB flash drive that suddenly went into write-protected mode while copying files (the copy operation triggered a "Retry" prompt, and after that the drive became read-only).
Symptoms:
I can read all existing files normally without any issue (already backed up all data).
I cannot delete, modify, or write any new files.
Windows format fails with "The disk is write-protected".
diskpart → attributes disk clear readonly runs successfully.
![[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean](https://obrazki.elektroda.pl/7680114800_1785618356_thumb.jpg "[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean")
diskpart → clean fails with: "DiskPart has encountered an error: The request could not be performed because of an I/O device error."
No physical write-protect switch on this model.
Device identification:
VID: 125F
PID: 0100
Manufacturer: ADATA
Product: ADATA USB Flash Drive
Serial Number: 48328602
Device Revision: 0110 / 0200 (varies slightly depending on USB port used)
Physical Disk Capacity: 63333990400 bytes
Protocol: USB 3.20 (also detected as USB 2.10 depending on port)
Design: Chip-on-Board (COB), fully epoxy-sealed - no discrete controller chip visible.
Tools tried (both failed to identify the controller):
ChipGenius v4/v19: Controller Part-Number = "Not recognized during normal detection" / "Unknown"
USBFlashInfo (antspec.com) v9.4.0.645: Controller = "Unknown", Possible Memory Chip(s) = "Not available"
Based on other UV128/64 GB reports I found (VID_125F&PID_DB8A with SM3267AB/SM3268AB controllers), I suspect this may be a Silicon Motion SM32xx series controller, but I cannot confirm since both tools fail to detect it, likely due to the COB design or a firmware fault preventing full identification.
I already backed up all data, so I'm fine with any repair method that requires a full low-level format/re-flash. Could anyone help identify the correct controller and the corresponding MPTool for this exact VID/PID combination?
Thank you in advance for any help.
Hello everyone,
I have an ADATA UV128 64 GB USB flash drive that suddenly went into write-protected mode while copying files (the copy operation triggered a "Retry" prompt, and after that the drive became read-only).
Symptoms:
I can read all existing files normally without any issue (already backed up all data).
I cannot delete, modify, or write any new files.
Windows format fails with "The disk is write-protected".
diskpart → attributes disk clear readonly runs successfully.
![[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean](https://obrazki.elektroda.pl/7680114800_1785618356.jpg "[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean")
diskpart → clean fails with: "DiskPart has encountered an error: The request could not be performed because of an I/O device error."
No physical write-protect switch on this model.
Device identification:
VID: 125F
PID: 0100
Manufacturer: ADATA
Product: ADATA USB Flash Drive
Serial Number: 48328602
Device Revision: 0110 / 0200 (varies slightly depending on USB port used)
Physical Disk Capacity: 63333990400 bytes
Protocol: USB 3.20 (also detected as USB 2.10 depending on port)
Design: Chip-on-Board (COB), fully epoxy-sealed - no discrete controller chip visible.
Tools tried (both failed to identify the controller):
ChipGenius v4/v19: Controller Part-Number = "Not recognized during normal detection" / "Unknown"
USBFlashInfo (antspec.com) v9.4.0.645: Controller = "Unknown", Possible Memory Chip(s) = "Not available"
Based on other UV128/64 GB reports I found (VID_125F&PID_DB8A with SM3267AB/SM3268AB controllers), I suspect this may be a Silicon Motion SM32xx series controller, but I cannot confirm since both tools fail to detect it, likely due to the COB design or a firmware fault preventing full identification.
I already backed up all data, so I'm fine with any repair method that requires a full low-level format/re-flash. Could anyone help identify the correct controller and the corresponding MPTool for this exact VID/PID combination?
Thank you in advance for any help.
![[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean](https://obrazki.elektroda.pl/3804275300_1785738848.jpg "[SM32xx] ADATA UV128 64GB VID_125F PID_0100 - write protected, IO error on clean")
