Rockbox restart the original status :((

[xx3004]

I have installed rockbox on my Sansa e260 successfully, but now, everytime I connect my player to the computer, rockbox is gone T__T, my sansa becomes original (the .rockbox folder is still there) and I have to re-install rockbox (, could you help me
Thanks in advance.

[funman]

* SansaAMS v1: To allow booting into Rockbox upon USB connection while power is off, you must create a new patched firmware upgrade file using mkamsboot v1.4 and a v2.0 bootloader file. Links to mkamsboot and the bootloader files can be found in the manual installation section below.

Source: http://www.rockbox.org/wiki/SansaAMS