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 emergency boot/ROM mode (VID=FFFF, PID=1201). In this state the FirstChip controller (chipYC2019 family) cannot load its normal firmware nor initialize the NAND, hence 0‑byte/“no media” symptoms and generic strings like “NAND USB2DISK.” (elektroda.com)
• The “Flash ID: 101010101010” is not a valid NAND ID; it indicates the NAND bus isn’t being read properly (floating/stuck lines or no response), so the controller returns a placeholder/garbage pattern. A legitimate device here would report a hex ID (e.g., Micron, Kioxia, SanDisk). (elektroda.com)
• Standard remedy: try re‑programming the controller with the correct FirstChip Mass‑Production Tool (MPTool) build that supports chipYC2019 and your NAND. This is destructive and will erase all data. If data matters, stop and use chip‑off data recovery. (elektroda.com)

Key points

• VID=FFFF/PID=1201 ≈ FirstChip ROM mode waiting for MPTool. (elektroda.com)
• “101010…” ID = invalid read from NAND; could be firmware or hardware (bus/power) fault. (elektroda.com)
• Tools and examples for chipYC2019 are archived on mydigit.net/usbdev.ru/Elektroda. (flashboot.ru)

Detailed problem analysis

• Enumeration path
  • FirstChip USB controllers boot from mask ROM, then fetch the working firmware and flash translation layer (FTL) from reserved NAND blocks. If the NAND cannot be read (corruption, unsupported part, bus/power fault), the device stays in ROM mode and exposes fallback descriptors VID=FFFF, PID=1201, generic vendor/product strings, and 100 mA MaxPower. (elektroda.com)
• Flash ID interpretation
  • Valid ONFI/legacy NANDs return manufacturer/device bytes (e.g., AD…, 98…, 2C…). Community databases show many chipYC2019 cases with real IDs; your “101010101010” pattern is characteristic of a non‑response on the data bus rather than a genuine chip ID. (flashboot.ru)
• What typically went wrong
  • Firmware area in NAND corrupted by unsafe removal/power loss or marginal NAND (common in fake‑capacity sticks), or a hardware fault (cold solder on TSOP/BGA, missing rail, dead NAND). (elektroda.com)
• Consequences
  • OS‑level tools (diskpart/format) cannot fix ROM‑mode devices; only the vendor MPTool can download a loader, scan the NAND, rebuild the bad‑block table, and write a fresh firmware/FTL. If the NAND never returns a valid ID, MPTool will fail and the fault is hardware. (elektroda.com)

Current information and trends

• Active field reports through 2024–2025 confirm that FirstChip devices with VID=FFFF/PID=1201 are recoverable when the NAND is readable, using FC1178/FC1179/chipYC2019 MPTools; newer public builds around 2024–2025 have been used for repairs. (elektroda.com)
• Community mirrors commonly used by practitioners: mydigit.net, usbdev.ru, and Elektroda threads. (flashboot.ru)
• Ongoing trend: many “2 TB”/“1 TB” low‑cost sticks are reprogrammed to fake capacities; after a proper MPTool repair they often return with a smaller, real capacity (e.g., 8–64 GB). (cnblogs.com)

Supporting explanations and details

• Firmware recovery workflow (generic for FirstChip)
  • Host PC: Windows 7/10/11, admin rights; connect the stick directly to a motherboard USB 2.0 port (no hubs). Temporarily disable AV to avoid false positives against factory tools.
  • Obtain a chipYC2019‑capable FirstChip MPTool (UTools/APTool variants). Many builds prompt for a settings password; common release builds accept factory defaults documented in forum threads; if not, use preconfigured parameter packages from reputable threads. (elektroda.com)
  • Steps: 1) Start tool; the device should enumerate as FFFF:1201 in a slot.
    2) Load or keep Auto NAND parameters; enable a full scan/erase/low‑level format.
    3) Run. A successful pass ends with a green “PASS,” after which Windows will ask to format the drive.
    4) Verify the real capacity with H2testw/F3.
  • Expected outcomes:
  • PASS with a sensible Flash ID and capacity → drive usable; capacity may be less than printed (fake).
  • “NAND not found”/invalid Flash ID persists → hardware fault (NAND, controller, power, solder).
• Hardware triage if software fails
  • Open the shell and inspect: cracked solder on NAND, corrosion, burnt components.
  • Power rails: USB 5 V to LDO 3.3 V for NAND I/O; many designs also have a core rail (~1.2–1.8 V) for the controller. No 3.3 V on NAND VCC/VCCQ → suspect regulator.
  • Bus activity: with a scope, check CE#/RE#/WE#/R/B# during insertion; flat lines suggest controller not toggling or NAND not powered.

Ethical and legal aspects

• Re‑flashing is destructive; obtain owner consent before proceeding.
• Factory MPTools may be under OEM licenses; ensure downloads comply with your local laws and your organization’s policies.
• If the drive may contain personal data, consider privacy regulations when shipping to a lab (e.g., HIPAA in the U.S.).

Practical guidelines

• If data is important: stop all DIY work and go directly to professional data recovery (chip‑off imaging, ECC‑aware reconstruction).
• If functionality is the only goal: try MPTool first; expect total data loss.
• Use H2testw/F3 after repair; keep logs. If errors appear beyond a certain size, the original stick was over‑reported. (cnblogs.com)
• Avoid repeated failed re‑flashes; they add wear and can worsen failures.

Possible disclaimers or additional notes

• The “1CE/Single Channel [SLC]” line is the guessing logic of the diagnostic utility; it does not prove SLC. Many chipYC2019 cases are TLC. Validate only via a real Flash ID and chip top‑marking. (flashboot.ru)
• Success rate is high when the issue is firmware only, but near zero if the NAND is electrically dead or unsupported by the tool’s flash table. (elektroda.com)
• Some builds of MPTool handle only certain flash tables; trying multiple versions is often necessary. (elektroda.com)

Suggestions for further research

• Photograph the NAND package top‑mark and search for a matching Flash ID/part number in iflash/usbdev databases to choose the best MPTool build. (flashboot.ru)
• Browse recent chipYC2019 threads to find parameter.ini examples that match your flash family (SanDisk/Kioxia/Micron). (elektroda.com)
• Learn about FTL/ECC behavior on failing TLC to understand post‑repair reliability limits.

Brief summary

• Your stick’s descriptors and bogus Flash ID confirm FirstChip ROM mode with failed NAND initialization. The only software‑level path is a FirstChip MPTool re‑flash that rebuilds firmware/FTL; this destroys data. If a valid Flash ID never appears or MPTool reports “NAND not found,” treat it as a hardware failure and consider professional chip‑off recovery or replacement. (elektroda.com)

If you want, I can:

• Point you to a current MPTool build and outline the exact settings to try; or
• Help plan safe lab‑grade steps if the data is critical (triage, imaging priorities, cost ranges).

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.