[rustyfrog666]

I have an old Chromebox with OpenELEC v5.0.8 and Kodi 14.2.

I want to use SABNZBD daemon on it but don't think I can do that with OpenELEC (let me know if that's not the case).  So instead I want to install Lubuntu. 

Can I just follow the steps as though it was a new installation?

For a standalone setup, you will need to perform the following steps:

• Open the ChromeBox and remove the write-protect screw
  
• Put the ChromeBox in developer mode
  
• Download/run the Kodi E-Z Setup Script
  
• Select the Standalone / coreboot Install option, which will backup your stock firmware/BIOS and flash a custom one
  
• Create install media for desired OS. Script includes option to create install media for LibreELEC
  
• Power off ChromeBox
  
• Connect/plug-in USB install media (if not using LibreELEC media you just created)
  
• Power on ChromeBox, Press [ESC] from boot menu, select USB device (no longer needed with UEFI firmware; USB devices will boot automatically)
  
• Install LibreELEC, GalliumOS, or your OS of choice
  

regardless of whether or not you can run Sabnzbd under OpenELEC, you'd be smart to start fresh given the age of your install:

* boot a Ubuntu USB
* update to latest UEFI Firmware
* reboot and boot/install OS

There are certainly ways to install Sabnzbd under LibreELEC (what I'd recommend) and if you're using the device for Kodi then that's what I'd recommend. Using Ubuntu + Kodi is always going to be slightly less optimal as a Kodi playback device

Hi, I have an old Chromebox with OpenELEC v5.0.8 and Kodi 14.2. You suggested I just need to:
 
* boot a Ubuntu USB
* update to latest UEFI Firmware
* reboot and boot/install OS (I’m going with LibreELEC as you suggested)
 
I successfully booted Ubuntu 20.4 from a USB.  However when I tried to update to the latest UEFI Firmware, the report said there was nothing to update (surprising given how old it is).  So can I ignore the UEFI update?
 
Also should I be installing the Linux 32-bit version of LibreElec?
 
Many thanks