O, something went forward. Moving uks.disabled to uks allowed me to uninstall jailbreak.
I thought before that renaming uks is to prevent auto-updates. Ill post later with results. Maybe its to early to cheer
OK everything is all right. For people getting U007 Update was not sucessful error: check if you have /etc/uks , not /etc/uks.disabled .
Thanks knc1 and DuckieTigger for posts. I'll be more careful next time.