knight-wolf, there is little to do. Butlup treated either by flashing or complete replacement of the memory chips. Once sewing is nothing, there is only the second option. The memory will have to fill in the image of the original firmware. Where to get it - well, or try old (if not damaged, butlup disappear) or merge with a similar device (can be anywhere-hand search). Financially it all, of course, is not justified unless the phone has not remained a very important infa. Cheaper and easier to buy another machine.
You can, of course, still in service by the Japanese ship. Suddenly repaired.