Look for file packages that specifically mention the model . Software from other models (like the AVN112M or AVN134M) will generally cause a boot loop or a "Check Card" error.
If the unit still says "Please Insert Map SD Card" after trying to update, check these: Eclipse Avn133mrc Sd Card Software Download -UPD-
How do you know if you’re in the right place? Look for these signs: Look for file packages that specifically mention the model