Actually, I forgot to say that in exasperation, I then rewrote the gdfs file which I had backed up, and it appeared to write successfully, but with the same result, WSOD! My battery was avout 80% before I backed up GDFS. The only reason I did this was because I thought that at some stage in the future, after I had read enough about it, I would reflash my phone, and hopefully also unlock it. This was not a big issue for me, I just wanted to experiment more than anythign else. But now I have a broken phone having not even tried to write anything to it! Does anyone else have experience of a GDFS backup causing damage to a phone? Is it a xs++ bug?
I have tried to update the software using SEUS, but the update service days I have the latest software. So my phone is detected by both xs++ and by SEUS, but it is still giving me WSOD. Any ideas guys?