my knox has been trimmed but in my settings official stock rom is shown and while going to check the rom by hard resetting my phone shows the rom is official..is there is any way to get back secure folder

When will j 7 pro gives upgrade to oreo

in sam mobile i have found that there is an available of latest updated security patches but when i have tried for update then it says my phone is up to date..what are the causes and solutions behind these??

secure folder is not working whenever i hv tried to open that app it says unauthorised app has been installed..neither i have rooted my phone nor i have tried to change stock rom to custom rom..

guys..which security patch r u using in j7 pro?? in my mob i m using feb 1 2018..guys plz comment