Well.. My opinion is.. Downgrading is possible..
But you will need uncompressed ROM files which you want to go back to..
Just copy uncompressed ROM files into your AXIM, and Run it.. You will go back to an old version..
This method was found by a spanish guy, alejandroborja..
We should thanks to him..
If you understand spanish.. read this link..
You will get the answer.. =)
http://www.alejandroborja.com/hosted...glish_rom_a03/