Looky at the sticky post here to fix:
http://ppcgeeks.com/how-to-customize...rom-t1395.html
Read up there to Unlock/unhide extrom.
Save a backup to card or PC to edit it.
You copy over your newly edited and fixed Extrom to the Extrom2folder using a file explorer like TotalCommander.
Then Hard reset.
You can remove "unhide" prog if you want.