Run full file scans using updated security software before extracting any third-party archives.
Ensure you didn't accidentally install the 64-bit driver on a 32-bit operating system, or vice-versa. Error: "Chip Not Responding" during Read/Write
The UPA USB 1.3 hardware architecture was designed during the lifecycle of older Windows operating systems. Achieving a stable connection depends heavily on your system version. Legacy Windows Systems (Plug and Play)
Use the included UPA_USB_Test_Tool.exe for a loopback test: Upa Usb Programmer 1.3 Driver Download LINK
Navigate to > Advanced options > Startup Settings > Restart .
Select the option: (Advanced).
| Source | Link / Action | |--------|----------------| | | https://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=41 Select "PL-2303 HXA/XA/TA" – version 3.3.2.105 | | DriverPack (Offline) | https://driverpack.io/en/hardware/usb/usb-serial/upa-usb-programmer-1.3 | | GitHub Mirror (Safe) | Search: PL2303_ProLific_Driver_v3.3.2.105.zip | Run full file scans using updated security software
This guide provides a detailed walkthrough for safely downloading, installing, and troubleshooting the UPA USB 1.3 driver on your computer. Understanding UPA USB Programmer 1.3
Right-click the device and select Update driver . Manual Search: Choose "Browse my computer for drivers."
: The developer, Elrasoft , provides the UPA-USB Device Programmer Software Demo and official updates for registered users. Achieving a stable connection depends heavily on your
Avoid any website that asks you to complete a survey, download a “download manager,” or pay for drivers. The UPA 1.3 driver is free and open-source compatible .
Once completed, the yellow exclamation mark will vanish, and the programmer will display correctly under your system's hardware tree (usually under Universal Serial Bus controllers or Ports COM & LPT as ). Troubleshooting Common UPA USB 1.3 Errors Error: "Device Not Found" / "Programmer Not Connected"
Ensure you see a folder containing the system driver files ( .inf , .sys , or .cat ). Step 2: Connect the Hardware
Click and target the exact folder where you unzipped your downloaded version 1.3 driver files. Click Next . Step 5: Bypass Security Warnings