after factory reset, what version firmware does it show?

not sure what u mean... can post a picture?

what is this "picture setting" u set?

when u turn on the tv, the androidtv launcher comes on.

it keeps changing becos of new youtube recommendations, your last visit to a certain app, etc.
...
btw, i now see a prompt to update.

anyone done it yet?

or scared by last update to 6.0 experience?

again, u mean with tv native player or with es file explorer-mx/kodi?

did it read with previous android5?

from last few pages, i think a couple of people have completed the update to android6.
need 6 hrs or so, i believe; so, need overnight.
if fail, can send report/contact them:
https://sharp.com.my/pageRender?msgContent=technicalyenquiry
from last couple of pages, think u r the 2nd person experiencing that.
meaning after update, the native player had more difficulty in reading drives.
originally, it is already not that good as it won't read certain brands, sizes and formats - as stated in the manual.
which is why i gave up using the native player; had always used es file exp with mx or kodi.
kodi is a better player than mx or vlc but is slower as it has to startup and shutdown like using kodi normally for streaming.
with android6, does esf-mx/kodi work ok with usb playback?
i have not updated to android6 yet, no need for now.
all sideloaded apps work fine, so far.

for icdrama, u get that message from time to time.

give it a few seconds, all will still play after that.

do u mean popping sound from tv speakers or from the tv body?

it does make some creaking sounds sometimes - expansion/contraction of the plastic components, i believe.

tv reboot - it's the android rebooting... yes, it happens, whenever it detects some update (or error) with any of the apps incl sideloads.