Attention! All actions you take are at your own peril and risk. There is a small chance that you may damage the smartphone during the flashing process and there will be no way to restore it, so follow all the instructions carefully. In the case of an unsuccessful self-flashing of an INOI smartphone, this malfunction will not be included in the warranty, and the service center has grounds to exclude the device from the warranty. Save all the data you need before flashing because all data will be deleted during flashing!
https://yadi.sk/d/vnCPAm8UE-rGCQ - Firmware updater
https://disk.yandex.ru/d/jpSi1n3eQu-o5A - firmware for Note 12