Gents this is my first post here, so please be gentle and have a lil patience..

I want to change the channel list on my 102E which I got off a mate.
I have managed to save the existing channel list in the .abs format
Great so far...
I would like to upload a channel list from here but the format is now .udf
So my question or questions are as follows
Why is the dump in abs format yet peoples channel lists are in udf format and how to i upload a udf to my box via USB stick?