Not a lot of processing power should be required for Sentry mode. MCU1/AP2 vehicles have the same cameras as MCU2 vehicles. The lack of Sentry on MCU1 vehicles could be a software resource decision - Tesla decided not to expend any resources re-implementing Sentry mode on the shrinking % of vehicles with the older MCU1 hardware.
While the MCU1 processor isn't as fast as MCU2, it is likely capable of running most (if not all) of the software currently provided only on MCU2.
Tesla is experiencing the same challenge other companies face when making a processor architectural change in their products - source code compatibility. After MCU2 was introduced, Tesla was basically providing the same features on MCU1 and MCU2 vehicles. In the past year, we're seeing a decreasing investment by Tesla in the older MCU1 software.
But unlike other manufacturers, when the MCU1 vehicles were sold, Tesla was marketing the vehicles would get new features through OTA updates - for the life of the vehicle, and based on their history with software updates for their vehicles since the S was introduced in 2012, they set a higher bar for expectations than what you'd expect from any other vehicle manufacturer (who generally only provide a few bug fix releases and then drop support completely after a year or two).
From a technical standpoint, Tesla should be able to provide more of these features for MCU1 vehicles. However, instead of doing that, it would make better sense for everyone to offer a reasonably priced MCU1 to MCU2 upgrade - and along with the HW2 to HW3 upgrade, bring those vehicles up to the same level as the current models - so that those vehicles would get the same features for the remaining life of those S/X vehicles (which could be 500,000 miles on the original battery packs).
Still waiting to get the "holiday" update on our 2017 S 100D...
While the MCU1 processor isn't as fast as MCU2, it is likely capable of running most (if not all) of the software currently provided only on MCU2.
Tesla is experiencing the same challenge other companies face when making a processor architectural change in their products - source code compatibility. After MCU2 was introduced, Tesla was basically providing the same features on MCU1 and MCU2 vehicles. In the past year, we're seeing a decreasing investment by Tesla in the older MCU1 software.
But unlike other manufacturers, when the MCU1 vehicles were sold, Tesla was marketing the vehicles would get new features through OTA updates - for the life of the vehicle, and based on their history with software updates for their vehicles since the S was introduced in 2012, they set a higher bar for expectations than what you'd expect from any other vehicle manufacturer (who generally only provide a few bug fix releases and then drop support completely after a year or two).
From a technical standpoint, Tesla should be able to provide more of these features for MCU1 vehicles. However, instead of doing that, it would make better sense for everyone to offer a reasonably priced MCU1 to MCU2 upgrade - and along with the HW2 to HW3 upgrade, bring those vehicles up to the same level as the current models - so that those vehicles would get the same features for the remaining life of those S/X vehicles (which could be 500,000 miles on the original battery packs).
Still waiting to get the "holiday" update on our 2017 S 100D...