Open the extracted folder and look for a subfolder named .
Modern Windows often blocks older Prolific drivers. If you see a yellow exclamation mark in Device Manager:
Never modify or clone a primary SIM card without backing up your phone contacts to a cloud service (like Google or iCloud) first, as data corruption can render the card permanently unusable.
Windows cannot natively open .rar files without third-party software. Download a trusted extraction tool like WinRAR or 7-Zip. Right-click the downloaded .rar file. Select or Extract to [Folder Name] . Step 3: Install the USB Serial Driver Simmax USB Serial Sim Card Reader Software Driver .rar
This often happens if the reader is not properly recognized or the SIM card is not seated properly. Try plugging into a USB 2.0 port rather than USB 3.0.
Look for an entry like Prolific USB-to-Serial Comm Port or USB Serial Port . Note the assigned number (e.g., ). Step 4: Run the SIM Management Software
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Open the extracted folder and look for a subfolder named
: This often refers to a specific brand or clone of software used to manage these cards. Users would often find "Sim Max 5.16" or similar versions on the mini-CD that came with the device. 2. The Driver Nightmare
Typically, the archive includes:
On older versions of Windows (like XP or 7), you may get a warning that the driver is not digitally signed. You can usually select "Continue Anyway" as these legacy drivers often lack modern certification. Missing COM Port: If the device isn't showing up, check the Device Manager Windows cannot natively open
Open your computer's to confirm registration. Look under Ports (COM & LPT) for an entry named Prolific USB-to-Serial Comm Port or USB Serial Port . Note the assigned COM port number (e.g., COM3). Troubleshooting Common Errors "Device Cannot Start (Code 10)" Error
Establishes the connection between the hardware and your operating system.
Is it safe? How do you install it? And why is it in a .rar file?
Need help identifying a specific chip on your Simmax reader? Open Device Manager → Details → Hardware IDs – paste that here, and I can confirm the exact driver you need.
Even with the correct , issues arise. Here is a doctor’s guide for your reader.