My Samsung Smart UHD tv showing internal Available Memory as ZERO MB. can you please share the instructions to recover storage? if that helped you.
I could fix this problem with EEPROM reset. It works with and above UN7400 as I heard.
Press the physical ON/OFF button on your TV. Should be somewhere at the middle of the edge, mine is at the bottom side, behind the Samsung logo. So press the button an hold for at least 3 seconds. Then press the ON/OFF on the remote within 10 seconds and hold for at least 3 seconds.
You should see your TV rebooting 2 times. If don't, then try again.
Please note, it's a factory reset, so I would advise to save your channel list, picture settings, and so on first...
I did the Reset test upon your steps, but still i am facing the same issue, i cant install any apps, even when i do the Smart HUB connection test, the last test which is THE APPS TEST, it said(UNABLE TO compelet Apps test )
your respons and advise is high appreciate,