Hi what they say in 4pda is this
https://4pda.ru/forum/index.php?s=&showtopic=822102&view=findpost&p=61856310
Reinstalling an android without re-scratching all internal media</b></span>
1. We start the program (it means that the drivers are installed), install</span>
2.Kachayem file .json, we put it with a replacement in the folder with android</span>
3.Otkryvaem program, and looking at the screen I painted zhamyakem buttons:</span>
A) 1-select <b>Flash editor</b> mode</span>
2-load the .json file from the folder with the android into which we put it</span>
3-select the firmware mode <b>UPDATE</b></span>
D) 4-check that all items are as on the screen</span>
E) 5 and press the <b>Start To Flash</b> button</span>
We are waiting for the reboot, we choose android, download, rejoice)</span>
Also, by removing individual items, you can flash only a specific partition such as system / boot / recovery / etc.</span>
its the best i can do for you 😛
It would be nice for a Russian to translate all the information they have on that thread because even with google translator i dont understand some things.