I am very grateful to you for your answers mergen3107.
When I installed hotfix through mrpi extension Rename Ota Binaries started to work.
You asked me why I want to enable updates: this actually makes me feel a little uncomfortable, when I don't know much about device and disabled the last "chance" to install hotfix. (I didn't expect that I can install it through mrpi
).
I think it is better to enable airplane mode and do not turn on wi-fi instead of using exstensions such as I used without experience.
Thank you!