I've messed up! I thought may be I should downgrade to an older Onyx M92 firmware so put the firmware from the Onyx website.
http://www.onyx-international.com.cn...?sortserial=17
Unfortunately the device won't load at all and just seizes at the boot-up screen and stays stuck.
The device is now completely unusable! If there is any ideas and advice, it would be helpful. Hopefully I can get the device to work again and then get the original Icarus firmware on it.