unable to install entware on 380.61 r7000

Hallo,


I tried to install entware on a r7000 running xwrt vortex. After reboot my installation is always gone and i don´t know the reason. Here is what i get:

admin@r7000:/tmp/home/root# mount
rootfs on / type rootfs (rw)
/dev/root on / type squashfs (ro,relatime)
devtmpfs on /dev type devtmpfs
(rw,relatime,size=127756k,nr_inodes=31939,mode=75


5)
proc on /proc type proc (rw,relatime)
tmpfs on /tmp type tmpfs (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
devpts on /dev/pts type...

unable to install entware on 380.61 r7000