First, It came with 'R'.
I tried to put Rockbox on it and bricked it. ('Load main image failed. Switch to Recovery mode')
Second, Reading thru the forums and wiki I thought I knew what I had to do.
Well copying the PP5022.mi4 file to the 16MD-FORMAT did not work.
Third, after many iterations of copying the files I went for the e200tool method. And I think what happened is that I did not know what PP5022.mi4 file went with the E260R and I got the wrong file and I am where I am now.
So, I hope that gives you the jist of it. Any help would greatly appreciated.
Nebbit