I don't understand why you keep comparing the Android release to the LKA behaviour. It's just wrong.
LKA behaviour depends mainly on the BCM module firmware and calibration settings followed closely by the FDR
FICM (The tablet) updates do not require, per se, any other updates to be performed so you can have a SWI68-XXX-1300R24 behaving as well or as badly as a SWI68-XXX-1300R59. It depends on the set of modules updates, calibration and configs that have been applied either at the end of the production run (BOM version), by the service center during PDI (some do, mine did) or during any other visits.
The only official update that requires a BCM update (plus a series of other module updates) is the TBOX one as they changed how it talks to the car (so it requires a BCM, SCU and GW upgrade as well)
It's only incidental that some service centers run BCM updates along with the FICM one but that's just their choice