I posted this in another thread but for those of you in this predicament, you can use the fix below:
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I got the internet working again by copying the platform.xml file from google -
https://android.googlesource.com/platform/frameworks/base/+/master/data/etc/platform.xml
(launch Open/Libre elec and ssh the file, e.g.
scp platform.xml
[email protected]:/flash/etc/permissions # replace IP with yours, this is assuming you'll reboot into recovery and factory reset, else try copying to /etc/permissions and reboot
Not ideal as I would prefer to get the original droidbox version, so if anyone can provide that still that would be much appreciated.
But so far everything's working again on the android side.
Regarding the installed HDD, format on the Open/Libre elec side and chmod the root of the new drive 777, e.g.
chmod -R 777 /var/media/HDD #assuming HDD is the name of your drive, if you formatted on the shell and gave it a label then use that, e.g.
mkfs.ext4 -L MyCustomLabel /dev/sda1
# this is assuming you created a partition on the drive with fdisk as /dev/sda1