How To Update Software On Subaru Impreza 2020: Complete OTA And USB Firmware Guide

Keeping your 2020 Subaru Impreza infotainment system updated ensures seamless smartphone integration, fixes persistent Bluetooth bugs, and optimizes overall system stability. This comprehensive technical guide details the exact procedures for executing both Over-The-Air (OTA) Wi-Fi updates and manual USB flash updates for the Harman-supplied Starlink multimedia units.

Pre-Operation & Equipment Checklist

Executing a successful software update on a 2020 Subaru Impreza requires careful preparation to prevent interrupted power states or corrupted firmware installations. Depending on the current hardware version (typically either the 6.5-inch or 8.0-inch display system), the update process relies on stable internet connectivity and proper voltage regulation.

• Essential Gear and Tools: A high-speed Windows PC or Mac (for manual USB updates), a formatted USB 2.0 or USB 3.0 flash drive with a minimum capacity of 4GB (formatted to FAT32 or exFAT), and a stable high-speed home Wi-Fi network or mobile hotspot.
• Prerequisite Knowledge and Standards: Identify your current firmware version by navigating to Settings, System, and System Information on your head unit. Ensure your vehicle battery maintains a steady voltage above 12.2 volts; keeping the engine running in a well-ventilated area or attaching an automotive battery tender is highly recommended during long installation cycles.
• Estimated Budget and Duration: The update is entirely free when performed via Wi-Fi or home computer download. Allocate between 15 to 45 minutes depending on connection speeds and the specific firmware package size.

Step-by-Step Subaru Impreza Infotainment Update Workflow

Step 1: Check Current Firmware Version and Connect to Wi-Fi

1. Turn the vehicle ignition to the ON position without starting the engine, or keep the engine running if parked in an open, well-ventilated space.
2. Tap the Home icon on your Starlink touchscreen, select the Settings app, navigate to the System tab, and tap System Information.
3. Note your current software version number for comparison later.
4. Return to the main Settings menu, select Wi-Fi, toggle the switch to ON, and connect your Subaru Impreza to a stable wireless network, such as your home Wi-Fi or a high-output mobile hotspot.

Pro-Tip: If your home Wi-Fi signal does not reach your driveway or garage, park close to your router or use a reliable smartphone hotspot to ensure an uninterrupted download stream.

Step 2: Execute Over-The-Air (OTA) Download and Installation

1. From the Wi-Fi settings or System Information menu, locate and select Check for Updates or Software Update.
2. If a newer firmware package is available for your 2020 Impreza, the system will prompt you with release notes and a download confirmation screen.
3. Tap Download and allow the head unit to download the package completely. Do not turn off the ignition or open/close doors aggressively while the download indicator is active.
4. Once downloaded, the system will prompt you to Install Now. Accept the prompt and allow the unit to reboot. The screen may go black or display the Subaru logo multiple times during the flash sequence.

Warning: Never turn off the vehicle ignition, disconnect the battery, or force-reset the head unit while a firmware installation is actively writing to memory, as this can brick the infotainment motherboard.

Step 3: Perform a Manual USB Firmware Update (Alternative Method)

1. On your personal computer, navigate to the official Subaru map and update portal or authorized owner support site, log into your account, and enter your Vehicle Identification Number (VIN).
2. Download the compressed firmware update file specifically designated for the 2020 Impreza multimedia platform.
3. Extract the contents of the downloaded archive directly onto the root directory of your blank, FAT32-formatted USB flash drive.
4. Insert the USB drive into one of the active USB ports located inside the Subaru center console storage bin.
5. Turn on the vehicle ignition, navigate to Settings, System, System Information, and select Software Update.
6. Choose the USB Update option. The system will verify the files on the drive, prompt you to confirm the installation, and automatically execute the flash sequence. Leave the vehicle running until the final completion message appears and the unit restarts.

Subaru Impreza Infotainment System Comparison

Common Update Failures and Field Fixes

• Failure Scenario: The head unit fails to detect the USB flash drive.
  
  
  • Root Cause: The flash drive is formatted improperly (e.g., NTFS instead of FAT32/exFAT), or the file structure is placed inside a subfolder rather than the root directory.
  • Actionable Fix: Reformat the USB drive to FAT32 on a Windows PC or Mac, ensure no hidden system folders exist on the drive, and extract the raw update files directly to the root level.
• Failure Scenario: The OTA download freezes midway or fails with a network error.
  
  
  • Root Cause: Weak Wi-Fi signal strength or temporary packet loss during transmission over cellular hotspots.
  • Actionable Fix: Move the vehicle closer to your wireless router, temporarily disconnect and reconnect the Wi-Fi network in the settings menu, or switch to the manual USB update method.
• Failure Scenario: Bluetooth or Apple CarPlay functions act erratically after a successful update.
  
  
  • Root Cause: Cached device profiles conflicting with new protocol handshakes in the updated firmware.
  • Actionable Fix: Perform a master reset of the head unit's Bluetooth and smartphone integration settings, delete the vehicle profile from your smartphone, forget the phone in the car settings, and re-pair both devices from scratch.

Frequently Asked Questions

Can I drive my Subaru Impreza while the software is updating?

No. You must keep the vehicle stationary with the ignition in the ON position or the engine running while the software update installs. Driving during an update can interrupt power delivery, corrupt system files, and render the infotainment display inoperable.

Is there any cost to download firmware updates for a 2020 Subaru Impreza?

Subaru provides software updates for the infotainment system free of charge. You can download files directly via the in-car Wi-Fi connection or via your personal computer using the official owner web portal onto a standard USB drive.

What should I do if the screen remains black after initiating an update?

Do not panic and do not disconnect the vehicle battery immediately, as the head unit frequently reboots several times during a flash cycle. Wait up to 15 minutes; if the display remains completely unresponsive, turn off the ignition, wait 60 seconds, and restart the vehicle to see if the recovery bootloader resumes the installation.

Will updating the infotainment software erase my saved radio presets and phone contacts?

In most standard incremental updates, your saved radio presets, audio settings, and paired device history remain intact. However, major version jumps may occasionally clear user data, so it is always wise to note your personalized settings beforehand.

How often does Subaru release software updates for the 2020 Impreza?

Subaru releases updates on an as-needed basis to address specific bugs, enhance smartphone projection stability, or patch security vulnerabilities. There is no set calendar schedule, so checking for updates manually every six months is recommended.

Master Your Subaru Impreza Maintenance Today

Regularly maintaining your 2020 Subaru Impreza infotainment system guarantees peak electronic performance, eliminates frustrating connection glitches, and protects your vehicle's technological resale value. Bookmark this guide and check for new firmware releases periodically to enjoy a flawless driving and multimedia experience every time you hit the road.