Horizon12 (IX212): Firmware Update and Revision History

This article provides the latest and legacy firmware for the HORIZON12 radio, including revision history.

Note: Watch the video tutorial to guide you through the firmware update process.

Before You Begin: Preparing Your USB Drive

To ensure a successful update, your USB drive must meet these specifications:

• A name-brand USB 2.0 drive no larger than 32GB.
• The USB drive must be formatted to FAT32.
• No files should be on the USB drive aside from the firmware.

Current Firmware

Version 07-09-2026

• Added album art for SiriusXM
• Fixed CarPlay issue after reverse
• Fixed pitch & roll not working on the offroad camera screen
• Fixed black screen on reverse when Android Auto is pairing
• Fixed random SiriusXM pop-up when no tuner is connected
• Improves general functionality

Version 12-11-2025

• Fixes issues seen with the display screen not working
• Adds turn signal volume adjustment for GM integrated kits
• Improves general functionality

Legacy Firmware

Version 05-23-2025

• No details provided