FirstChip chipYC2019 USB2DISK NAND USB Stick Shows VID=FFFF PID=1201, Flash ID 101010101010, 0GB Capacity

User question

Description: [G:]USB Mass Storage Device(NAND USB2DISK)
Device Type: Mass Storage Device

Protocal Version: USB 2.00
Current Speed: High Speed
Max Current: 100mA

USB Device ID: VID = FFFF PID = 1201

Device Revision: 0000

Manufacturer: NAND
Product Model: USB2DISK
Product Revision: 0.00

Controller Vendor: FirstChip
Controller Part-Number: chipYC2019
Flash ID code: 101010101010 - 1CE/Single Channel [SLC]

Tools on web: http://dl.mydigit.net/search/?type=all&q=chipYC2019


Possible Flash Part-Number
----------------------------
Unknown


Flash ID mapping table
----------------------------
[Channel 0] [Channel 1]
101010101010 --------
-------- --------
-------- --------
-------- --------
-------- --------
-------- --------
-------- --------
-------- --------

Artificial Intelligence Response

Direct answer to the question

• Your USB stick is enumerating in the controller’s ROM/boot-recovery state (VID=FFFF, PID=1201) because the FirstChip chipYC2019 firmware cannot initialize the NAND. The “Flash ID code: 101010101010” is not a valid NAND ID; it indicates that the controller cannot read the NAND device (firmware table missing/mismatched, bus fault, or bad NAND).
• The practical path is either:
  • Restore the controller with a correct FirstChip Mass-Production Tool (MPTool) build that supports chipYC2019 and your NAND, or
  • If data matters, stop and pursue hardware-level (chip-off) recovery.
• If reflash succeeds, the drive may return with its true physical capacity (often smaller if the original was fake-capacity); if it fails, the NAND is likely defective or unsupported.

Key points

• VID=FFFF, PID=1201 = ROM mode, generic strings (Manufacturer: NAND / Product: USB2DISK) are normal in this state.
• “101010101010” ≠ a real JEDEC NAND ID.
• Use a chipYC2019-capable FirstChip MPTool; you may need to try several versions.
• Proceed only if data loss is acceptable; MPTools are destructive.

Detailed problem analysis

• Descriptor analysis
  • Device enumerates as USB 2.0 High-Speed, MaxPower 100 mA, generic strings; this is typical when firmware is not loaded from NAND. Normal, customized descriptors (real VID/PID, manufacturer string) are embedded in the controller firmware stored in NAND. When the controller fails to fetch that firmware, it exposes ROM-mode defaults.
• Controller/NAND interface
  • FirstChip USB flash controllers boot from internal ROM, then scan the attached NAND (TSOP-48/BGA) for the firmware/FTL image. If NAND is unreadable (no ID response, bus held, or unknown part), initialization halts and the ROM exports fallback VID=FFFF/PID=1201.
  • The reported map “1CE/Single Channel [SLC]” tells us the analysis tool only saw one chip enable (CE) line configured. That alone isn’t proof of SLC; many tools guess channel/CE from stale/boot defaults.
• Invalid Flash ID
  • Real NAND IDs look like hex bytes (e.g., 98 D3 …). A repeating “1010…” pattern is a placeholder/garbage read (floating bus or controller returning a constant because it can’t handshake the NAND). Common electrical causes:
  • CE#/WE#/RE# not toggling (controller not running NAND microcode).
  • R/B# stuck, or CLE/ALE not asserted due to firmware absence.
  • Open/cold solder joints on I/O[0..7], CLE/ALE/WE#/RE#/CE#.
  • Wrong voltage rail (Vcc 3.3 V missing; some NANDs also need 1.8 V I/O variants—mismatch kills ID).
  • Physically dead NAND.
• Why capacity is 0.0 GB
  • Without a valid ID and bad-block scan, the FTL cannot be built, so LUNs/Logical Units are not exposed; OS sees “no media” or 0 capacity.

Current information and trends

• FirstChip families (FC117x/FC13xx era) are common in low-cost/fake-capacity USB sticks. When reinitialized with the right MPTool, they often “shrink” to true capacity.
• Tool compatibility is highly version-dependent. Newer MPTool builds bundle larger NAND-ID tables and updated microcode. It is normal to try multiple builds to find one that recognizes your NAND.
• Community repositories (e.g., mydigit and similar) remain the de facto sources for FirstChip MPTools and parameter sets; vendor public downloads are rare.

Supporting explanations and details

• What the MPTool does
  • Pushes a RAM firmware loader via USB to the controller in ROM mode.
  • Probes the NAND bus, reads the ID, runs a full die/plane/CE scan, creates a translation layer, allocates spare/ECC, and writes the production image (including strings, VID/PID).
• Why the ID can still fail inside MPTool
  • The generic analysis tool you used just reported a placeholder; the MPTool has deeper probe sequences and flash tables. If even the MPTool cannot get a sane ID, suspect hardware (NAND or soldering).
• About “SLC” in the readout
  • Many utilities mislabel unknown NAND as SLC. Assume “unknown” until confirmed by a real ID string or by reading the chip’s top marking after opening the casing.

Ethical and legal aspects

• MPTools are manufacturer service utilities, often leaked; treat downloads cautiously and scan for malware; use an isolated Windows machine if possible.
• Reinitializing a suspected fake-capacity drive is legal for personal repair, but do not resell devices with altered capacity/branding without disclosure.
• If data is sensitive, professional recovery avoids accidental overwrites and preserves chain-of-custody.

Practical guidelines

Implementation method (firmware path; destructive) 1) Prepare

• If data matters: stop here and consider a lab. Otherwise proceed knowing all content will be lost.
• Use Windows (Win7/Win10 works best). Run tools as Administrator. Prefer a native USB 2.0 rear port (avoid hubs/USB 3.0 front headers).
• Disable other USB storage to prevent mis-flashing. 2) Get a suitable FirstChip MPTool for chipYC2019
• From the repository you referenced, search for “FirstChip”, “MPTool”, “chipYC2019” and also try tools labeled for FC1178/FC1179 if they explicitly list chipYC2019 in release notes. Download several builds; compatibility is hit-or-miss.
• Extract each tool to a short path (e.g., C:\FC\ToolA\). 3) Run and detect
• Start the tool, plug the drive; it should occupy one port in “Init/ROM” state showing VID=FFFF/PID=1201.
• Enter Settings/Advanced (common passwords are blank or documented in the package’s readme; if a dialog appears, check the included notes). 4) Configure minimally
• Leave VID/PID default; do not “force” an arbitrary Flash ID.
• Enable full scan/erase, full bad-block scan; leave ECC/default page size to Auto.
• If the tool ships “profiles” (.ini/.cfg) with a NAND table, try the ones that include your controller; do not hand-pick a random NAND brand. 5) Start production
• Click Start. Expect steps: RAMCode → Scan → Erase → Program FW → Format. This can take minutes to >1 hour.
• On success: status green/OK, real capacity shown. Power-cycle the stick and verify in Disk Management, then test with H2testw or f3write/f3read to confirm true capacity and stability. 6) If it fails
• Try another MPTool build.
• If multiple builds can’t read NAND (errors like “GetFlashID fail”/“No CE”), move to hardware checks.

Hardware diagnosis (non-destructive; for engineers)

• Visual/thermal:
  • Inspect under magnification for cracked joints on the NAND and controller, especially TSOP-48 pins CE#, RE#, WE#, ALE, CLE, I/O0–I/O7, R/B#. Gentle pressure test while enumerated (watch for intermittent detection).
• Power rails:
  • Confirm +5 V from USB; controller LDO outputs (typically 3.3 V for NAND Vcc, ~1.2–1.8 V core). A missing 3.3 V rail guarantees no NAND ID.
• Signal activity (scope/LA):
  • After plug-in, in ROM mode the tool should drive CE#/CLE/ALE and strobe RE#/WE#. Completely flat lines → microcode never started (controller fault) or clock failure (check crystal/oscillator). Busy (R/B#) stuck low → NAND internal fault/short.
• Rework:
  • If you see suspect joints, flux and reflow the NAND (carefully) or reball BGA packages as needed. Retest with MPTool.

Chip-off/data recovery (if data is critical)

• Desolder NAND, read with a NAND reader (TSOP-48/BGA adapters).
• Reconstruct data with vendor-specific ECC/XOR/FTL transforms. FirstChip FTLs are not trivial; success depends on know-how and tooling. Consider a professional lab.

Possible disclaimers or additional notes

• A significant portion of chipYC2019 sticks in the market are reprogrammed fake-capacity devices. A “successful” repair that returns, for example, 8–64 GB from an advertised 128–2 TB is expected and correct.
• Some NAND parts are simply unsupported by the MPTool you have; only a build with the right flash table will work.
• If the controller silicon is damaged, no software tool will fix it.

Suggestions for further research

• Open the casing and photograph the NAND top-marking; search its exact part code to pick MPTool builds whose release notes include that ID.
• Study TSOP-48 ONFI pinout and timing to probe CE#/RE#/WE#/R/B# and confirm whether the controller is driving the bus.
• Validate post-repair integrity with H2testw/f3; keep logs for future health checks.
• Browse community threads specifically for “chipYC2019” and the printed NAND code to find working parameter files.

Brief summary

• Your drive is in FirstChip ROM mode (VID=FFFF/PID=1201) because the controller can’t read/initialize the NAND; the “101010101010” ID confirms unreadable NAND.
• Best effort fix: use a chipYC2019-compatible FirstChip MPTool, try multiple versions, run a full scan/production format. Expect permanent data loss and potentially a smaller, real capacity if the original was fake.
• If tools cannot obtain a valid ID, investigate hardware (power rails, solder joints, bus activity) or proceed to professional chip-off recovery if data is valuable.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.