It's understandable to want to keep your vehicle's software up to date for optimal performance and features. While it's unusual not to receive any updates for such a long period, there could be a few reasons why your infotainment system isn't detecting them.
Firstly, it's worth checking with your vehicle's manufacturer or dealership to confirm if there have been any updates released that your system might have missed. Sometimes updates are not automatically detected by the infotainment system, and manual intervention or a visit to the dealership might be necessary.
Another possibility is that there haven't been any updates released for your specific vehicle model since April 2021. Updates for infotainment systems can vary depending on the manufacturer and model, and it's not uncommon for certain models to receive updates less frequently than others.
If you're concerned about missing out on updates or if you believe there should have been updates released for your vehicle, reaching out to your dealership or the manufacturer's customer support can provide you with more information and assistance. They can verify if there have been any updates and help ensure that your vehicle's software is up to date.