hi blackhand

not sure myself but try this first you are looking to something like this

(you will need a micro sd card min 1gb)

you need to get your device into recovery mode with the sd card in slot on side

make sure you have enought power in battery

make sure arnova is powered down by holding paper clip in reset hole on the side for about 10sec

make sure power plugs not in

hold the volume up (+) button and the power botton together 

plug power in when you see it fire up to arnova white writting let go of both 

it should go into recovery mode like this

do a backup 1st to sd card (you can go back and try factory reset after you backed up this did not work for me)

because i applied different firmware flash not knowing i lost my firmware 

then you can try restore to see if works

if it does then could you let me know

then i was hoping i you could sent me your backup to try and get mine back up and running

thanks sean