@Maico-Valcke-0 If you only have problems with the wifi, you dont need the last one (fsck.fat /dev/mmcblk0p1) but you can go straight to the wifisetup command

@magouero You paste/enter in the console:

vim /etc/opkg/distfeeds.conf

This opens the configuration called "distfeeds" in the vim console text editor.
When this file is open, you simply delete the hashtag before the fifth line (should end with "SNAPSHOT/packages/mipsel_24kc/packages"). Note, on some keyboards the backwards arrow which would delete a letter in Word wont do anything, if this is your case, just highlight the hashtag and look for a key on your keyboard where "Delete" or "Del" is actually readable on it.

When the hashtag is deleted:

press ESC once
type ":wq" without quotes and press enter. This saves and quits vim; You should get the root-Omega-XXXX:/ back

Now retry

opkg update
opkg install dosfstools
fsck.fat /dev/mmcblk0p1

Hope this helps