BYD Plus Sound DM-I SOS: I have a Master Account and Wi-Fi, but OTA updates are blocked. How do I "bypass" the server?

Guys, this is a matter of life and death for my multimedia device. The Master Account is linked, and ownership has been verified. The car has Wi-Fi internet, but updates aren’t coming through or downloading. The system is stuck waiting for the built-in eSIM to be activated with a Chinese ID, which doesn’t exist and never will.

I’m afraid to flash it—the specs are rare, and there’s a high risk of bricking the system. I’m specifically looking for a software/administrative solution.

If anyone has encountered this, please advise:

1. Has anyone managed to get BYD technical support or a dealer to remotely (via a server) confirm the activation of the telematics (T-Box) without linking it to a Chinese SIM card?

2. Is there a setting in the engineering menu that forces the car to prioritize downloading updates via Wi-Fi, ignoring the eSIM status?

3. Has anyone tried the "White List" at the factory? Who specifically did you contact (which department) to have the VIN unlocked for over-the-air updates?

4. Has anyone had an experience where, after a long period of being ignored, tech support finally “pushed” the update package manually to your account?

I’m only interested in the official or software-based method via the server, without physical intervention or flash drives. Please share the contacts of the specialists or the steps to “get them to act.