@Dijker Thanks.
@Mike1233 You answered yourself 
You need to enter to recovery mode to change wifi.
@Henk_Renting was just taking out the trash and I found this brick. And it awakened anger in me, because I threw away 400 dollars on something that will never work again. The worst part is that it wasn’t even my fault — an automatic update started, never finished, and now the device won’t turn on anymore. I want to share this bad experience with other users. There’s nothing wrong with that. Because neither support, the store, nor anyone else made any effort to resolve the situation. I feel cheated by it.
