tar xf OpenELEC-Cuboxi.arm-devel-20140123155012-r17126-gceb58b6.tar
change to the untarred dir
download the u-boot file (the uboot which comes with OpenELEC is actually broken, so use a prebuild file from a older uboot version (note: this file is for Cubox-i4pro and will not work with the other models)
insert your sdcard in your sdcard reader and find out which device is used (in our example its /dev/sdc) Attention: you can loose all your data if you choose the wrong device, so not copy paste the following commands without checking twice!!!
prepare your sdcard with fdisk, you need to create 2 partitions (150MB starting at offset 2048 + rest)
Please use only our issue tracker on github if you are sure you found a OpenELEC (only) problem or a problem with the OS byself or to create Pullrequests, otherwise please use our forum to report issues