Maybe they did initially.
Don't worry all those Chinese 4G/5G telecommunications components are perfectly fine...especially the ones that can have firmware updates..
The power cord for my Tesla had an update a few days ago.
Yes, you read that correctly...the power cord that plugs into a regular wall outlet auto-updated.
In an unexpected hardware drop, Tesla has started pushing a firmware update for its portable Mobile Connector charging units
www.notateslaapp.com
Tesla Rolls Out Rare Software Update to Mobile Connectors
now read it again carefully about how that worked. The cord has no way of updating by itself. BUT it has some backdoors exposed that allows a Tesla car to update it the next time the cord is plugged into the car. So the car downloads the power cord update, holds onto that update until somebody one day finally plugs the power cord into the car, the car then notices the cord's brains are out of date so then transfers the update to it. The user is completely oblivious as to what happened....hmmm.