Automotive forums like A6Klub and Reddit note that updating to P2873 is usually sequential. For example, a vehicle might first need to be updated to P2711 before the final P2873 patch can be applied. Installation is typically done via an SD card through the "Engineering Menu" of the Audi MMI. 4. Regional Conversions
"mh2p-er-aug35-p2873" refers to a specific firmware version for the Audi MMI (Multi Media Interface) Touch mh2p-er-aug35-p2873