[packy1]

pro kvik:

Ad 1. 
orig. DO na KIII v CE funguje bez problémů, 
aby fungovalo DO je zapotřebí zadat příkaz přez PUTTY příp. WINSCP

echo "meson-ir * mecool" > /storage/.config/rc_maps.cfg

detail : https://discourse.coreelec.org/t/coreelec-8-95-6/2566
nebo: https://www.xbmc-kodi.cz/prispevek-kiii-...1#pid57071

Dáje je třeba abys měl v CE   nastavení > systém > vstup - sekce Klávesnice nastaveno na English (US)
alespoň u mě to tak je, jinak mi nefungujou čísla na DO. 

Dlouhý stisky na neorigo DO nefungují !

To by mělo být vše, po změně proveď restart KIII, pokud nebude fungovat udělej zálohu karty a zkus čistou instalaci + mnou popsaný postup, z tvého popisu je patrné, žes do systému mohl nakopírovat něco co tam nepatří.

AD2.
Z toho co píšeš Samba funguje, jinak bys na síti neviděl složky z CE, pouze nejsou nastavená práva k přístupu. 
Práva se definujou v souboru samba.conf, který najdeš příp. vytvoříš (Notepad++)  v cestě /storage/.config/samba.conf

moje nastavení samby, mám povolený adresářový root pro public:

[global]
  server string = CoreELEC

  browseable = yes
  writeable = yes
  printable = no
  deadtime = 30
  mangled names = no
  name resolve order = host bcast
  printcap name = /dev/null
  load printers = no
  encrypt passwords = true
  enable core files = no
  passdb backend = smbpasswd
  smb encrypt = disabled

  # samba share options
  map to guest = Bad User
  guest account = root
  security = user

  # samba tuning options
  socket options = TCP_NODELAY IPTOS_LOWDELAY
  min receivefile size = 16384
  aio read size = 16384
  aio write size = 16384
  use sendfile = yes

  # "strict allocate = yes" breaks large network transfers to external hdd
  # Force this to "no" in case "yes" becomes the default in future

  strict allocate = no
  allocation roundup size = 0

# Using the following configurations as a template allows you to add
# writeable shares of disks and paths under /storage

[Update]
  path = /storage/.update
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/.update

[Videos]
  path = /storage/videos
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/videos

[Music]
  path = /storage/music
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/music

[TV Shows]
  path = /storage/tvshows
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/tvshows

[Recordings]
  path = /storage/recordings
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/recordings

[Downloads]
  path = /storage/downloads
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/downloads

[Pictures]
  path = /storage/pictures
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/pictures

[Configfiles]
  path = /storage/.config
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/.config

[Userdata]
  path = /storage/.kodi/userdata
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/.kodi/userdata

[Screenshots]
  path = /storage/screenshots
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/screenshots

[Logfiles]
  path = /storage/logfiles
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/logfiles
  root preexec = createlog

[Backup]
  path = /storage/backup
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/backup

[Picons]
  path = /storage/picons
  available = yes
  browseable = yes
  public = yes
  writeable = yes
  root preexec = mkdir -p /storage/picons/tvh /storage/picons/vdr

[Addons]
  path = /storage/.kodi/addons
  available = yes
  browsable = yes
  public = yes
  writable = yes
  root preexec = mkdir -p /storage/.kodi/addons

[Root]
  path = /
  available = yes
  browsable = yes
  public = yes
  writable = yes