Gm Software Updates
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Gm Software Updates

Click on the button below to download “Spark” the EVO HT update agent software.Software is only compatible with EVO HT products. Part Numbers: 16000, 16010, 16030, 16050, 16060, 26000, 26010, 26030, 26050, 36000, 36030, & 36050.Please Note: Currently, the EVO HT software will not work on any Mac computers. With an expanded capacity for smartphone-like over-the-air software updates, the system enables the adoption of functionality upgrades throughout the lifespan of the vehicle. The new architecture also provides more rapid communications within the vehicle itself and to outside sources thanks to Ethernet connections of 100Mbs, 1Gpbs and 10Gbps.

When 2018-2021 GM models equipped with an Infotainment 3 System (RPO IOR, IOS, IOT, IOU, IOV) (Fig. 26) come into the dealership with various system concerns – the radio display freezing, Bluetooth not connecting automatically, or certain features not accessible – and programming updates are determined to be needed, is the right repair to update the radio software or the radio calibration? Or both?

Fig. 26

There may be some misunderstandings about the differences between software and calibrations, which are not the same thing and are not interchangeable terms. Calibrations instruct the radio what to do while the software tells the radio how to do things.

For example, when a radio plays the welcome animation at start-up, a calibration instructs the radio which brand name and logo to display. It’s the software that tells the radio how to display those graphics, including how fast or slow to play the animation, the image size, and how long the image is displayed.

Calibration Updates

Calibrations for the radio are updated infrequently. In the Service Programming System (SPS), the radio calibrations are updated by selecting Radio – Programming. (Fig. 27)

If the radio is being replaced, the new module will require calibration programming using SPS, followed by USB programming for the software. Be sure to always check the appropriate Service Information and Bulletins for details on related programming as well as the correct programming order for each specific repair.

Fig. 27

Software Updates

Software updates occur much more frequently in order to address fixes and continuous improvement enhancements, such as issues with Bluetooth, device projection (Android Auto/Apple CarPlay), Sirius XM, screen displays, and instrument cluster/Driver Information Center (DIC)/Head-Up Display (HUD) concerns. Each software update includes all enhancements from previous software version releases.

The software releases are usually announced with a Service Bulletin once the programming is available. The software release also may be pushed to vehicles remotely through an Over-the-Air (OTA) update. (Fig. 28) If the remote vehicle update cannot be completed, the radio must be updated through SPS via USB. Keep in mind that not all software releases are distributed as OTA updates.

Fig. 28

In Techline Connect, the radio software is updated by selecting USB File Transfer. Use a USB 2.0 flash drive with a minimum capacity of 16 GB when updating the software.

Before Beginning an Update

Before proceeding with a USB File Transfer to update the software, check for any Infotainment System OTA updates on the infotainment system. Go to Settings > System tab > Updates on the infotainment screen to verify if an update package has been remotely downloaded to the vehicle.

If an update is shown on the Updates screen, the software update must be performed using the download that is present on the vehicle.

If there is not an update available, the build number must be verified before a software update is performed using the USB File Transfer. (Fig. 29)

Fig. 29

Look for additional articles on radio programming coming soon in future editions of TechLink.

– Thanks to Jeremy Richardson, Jeremy Krall and Zach Gillett

The software on many 2018-2021 GM models equipped with an Infotainment 3 System (RPOs IOR, IOS, IOT, IOU, IOV) (Fig. 1) can be updated over the air to the vehicle or via USB in the vehicle.

Fig. 1

How do you know if the infotainment system has the latest software? Simply selecting Updates in the Settings menu on the infotainment screen does not confirm that the software is current. Unlike a mobile device such as a smartphone, the infotainment system does not look at the current version of software and go online to check for available updates.

The Update menu on the infotainment screen (Fig. 2) is only used for locating an Over-the-Air (OTA) update that has already been pushed to the vehicle, downloaded, and is waiting for user acceptance in order to be installed.

Fig. 2

Software vs. Calibrations

Radio software updates are not the same as radio calibrations. Software and calibrations are not interchangeable terms. Calibrations instruct the radio what to do while the software tells the radio how to do things.

Gm Software Updates

Calibrations for the radio are not updated frequently. In the Service Programming System (SPS), the radio calibrations are updated by selecting Radio – Programming.

Software updates occur much more often in order to address fixes and continuous improvement enhancements, such as issues with Bluetooth, device projection (Android Auto/Apple CarPlay), Sirius XM, screen displays, and instrument cluster/Driver Information Center (DIC)/Head-Up Display (HUD) concerns. Each software update includes all enhancements from previous software version releases and includes hundreds of enhancements.

Software releases are usually announced with a Service Bulletin once the programming is available. The bulletin will list most of the enhancements included in the software update. However, due to limited text space, the bulletins are simply titled Radio Software Update.

Be sure to check the bulletin to see if a specific condition is included in the software update. Don’t’ assume that the new software addresses a specific condition simply by seeing a change in overall radio system operation after the programming update.

Software Updates

Some software releases may be pushed to vehicles remotely through an OTA update. If the remote vehicle update cannot be completed, the radio must be updated through SPS via USB. Keep in mind that not all software releases are distributed as OTA updates.

If a customer declines a vehicle update, or the update is unsuccessful, it will be necessary to reprogram the radio with the new software package.

In Techline Connect, the radio software is updated by selecting USB File Transfer. Use a USB 3.0 flash drive with a minimum capacity of 16 GB when updating the software.

If an update is shown on the Updates screen, the software update must be performed using the download that is present on the vehicle. Follow the prompts on the infotainment screen. (Fig. 3)

Fig. 3

TIP: It is normal operation of the OTA update process for a radio to remain on from 30 seconds to up to 10 minutes after the ignition is turned off and Retained Accessory Power (RAP) has been disabled, depending on the vehicle, radio RPO and current software version. The radio will return to normal power-down operation (radio off when RAP is disabled) once the OTA update has been installed.

If there is not an update available, the Build Number must be verified before a software update is performed using the USB File Transfer.

Build Number I