Help: "closed" message when trying to use sdb

Hi everyone!
I'll go right to the issue, I'm trying to change the icons on a Samsung Gear 2 Neo following the instructions on this thread: http://forum.xda-developers.com/show....php?t=2782669. So far I had to change the firmware so I could root it, fight with drivers, ROMs, Odin, and all that stuff, and finally could root it, but now that I run the command "sdb shell mount -o remount,rw /" I get the message "closed" and can't proceed. I tried changing firmware, resetting to factory, rerooting, everything to no avail. So I'd like to ask for your help to solve this issue. I'll leave a screencap of the command window here:


Thanks in advance.

Honor 5x screen display not adjusting with cover closed after marshmallow update

Hi,

I'm hoping someone can help. After receiving the marshmallow update, my honor 5x doesn't adjust the screen display with the phone cover is closed. Prior to the update, if the phone has a flip cover for the screen and it was closed, the screen would adjust the display, like move the time, etc.

Any ideas on how to re-enable this feature???

TIA
Jarrel