wrong gdfs killed my k800i, how to repair?

[MASVA]

hello,
i've written a gdfs for an orange k800i into my hutchison one, as a result my phone doesn't work anymore.

also i cannot write the original gdfs back.

is there any way to repair it?

thanks for your help

you need service cable,why you did that?
gdfs is unique for every phone
if you have backup of your on write it back with setoollite