New System Launcher crashes and all downloaded data deletes =(

Mar 3, 2014
Good day. Problem is that it deletes all my data after reboot including changes in settings, application updates and so on. Almost every change on internal device. Moreover if I download many files or applications all processes starts to crash including System Launcher so as a result I dont have system launcher so I am forced to reboot phone. And as I was telling before all downloaded data is deleted. So I tried to reinstall OS by recovery mode, updater and miflash and I have no result. All the time when it seems to reboot in installed OS I have my old version with same bug. I don't know what is happening with my phone. Please help me because it is very annoying. Tell me if you need more information about problem. But overall I just explained full issue. Waiting for your response. Thanks!