How to remove viruses on Android?

Question

Android

There is a Fly IQ4404 phone, it has some kind of Chinese root program (I suspect the Chinese version of kingoroot)
When connected to the Internet, a lot of programs start to download.
The reset didn't help. 3 PCs do not see it. The recovery is standard and it is not possible to flash through it. I managed to install an antivirus on the bodies, but it is useless.
How can you remove viruses from it?

Answer 1

If the viruses are at the system level, then it can be cured only by a complete flashing to a normal firmware, where there are no viruses.
Of course, you can turn on USB debugging and sit and pick out everything suspicious through the debugger console, but here you need specialist knowledge - a non-specialist can simply finish off the firmware.