Solution: You downloaded a 32-bit driver for a 64-bit OS. The fixed package must include amd64 drivers. Redownload the file named MQU350_x64_Fixed.exe.

If you manage to locate the correct patch files from a trusted community source, the process generally looks like this:

Once the progress bar hits 100%:

Fix:
This indicates a corrupted download. Compare your file’s MD5 checksum with the official one:

CertUtil -hashfile MQU350_Fixed_Setup.exe MD5

If mismatch occurs, re-download using a download manager (e.g., Free Download Manager) to avoid packet loss.

Warning: Do not download executables from random pop-up ads or file upload sites that ask you to disable your antivirus. Many of these contain malware. Instead, follow these verified methods.

If your unit is simply acting buggy, visit a dealership. They can perform a "TCU" (Telematics Control Unit) update or a full system flash. This is the only 100% safe method, though it can be costly ($100–$200).