The developer "hit00" (along with a user identified as "@笑着无奈") quickly identified the problem and released v4.20.1107 as an emergency patch. The announcement included an emphatic warning: .
The keyword phrase reveals a common user journey: you found a mysterious .rar file from a forum, you know it fixes USB drives, but you’re stuck on how to “install” a portable tool. Now you know the secret – extraction + driver loading = installation.
The ultimate tool for diagnosing corrupted USB flash drives, identifying controller chips, and fixing flash memory errors is . When a USB drive shows "Write Protected," displays "Insert Disk," or reports 0 bytes of capacity, this specific software version acts as the premier utility to retrieve the exact hardware specifications needed to repair the device.
Here is a simple step-by-step guide:
Why? Because this particular version, packaged as a .rar archive with a "fix," is known for its ability to identify USB controllers that newer versions miss—especially older Chinese, unbranded, or counterfeit drives.
: The v4.20.1107 update was specifically noted as a critical update for data security, with developers advising users to stop using older versions. ChipGenius Safety Note ChipGenius v4.21.0701 (2021-07-01) by hit00 - USBDev.ru
: Shows the Vendor ID (VID) and Product ID (PID). chipgeniusv4201107fixrar install
ChipGenius is a portable Windows utility that queries the internal microcontrollers of USB-connected devices. Unlike standard Windows properties, ChipGenius bypasses logical filesystem errors to read raw hardware data directly from the USB controller chip.
With the controller model in hand, you can search online for:
to prevent automated malware scanners from blocking the download. Open the extracted folder and double-click the file to launch it immediately. Plug in your USB device. The tool will display the Controller Vendor Controller Part-Number ⚠️ Critical Security Warning The developer "hit00" (along with a user identified
Right-click ChipGenius.exe and select Run as Administrator to ensure it has full access to the USB bus.
The version dates back to late 2011. The “ Fix ” in the filename typically indicates that this release has been patched to: