Sashaa

Hello, please heelp. trouble that: for install enigma2-plugin-extensions-backupsuite_7.3_mipsel shell say: There is no support (yet) for this kind of receiver.
How install "mkfs-ubif" and what is "mkfs-ubif" ?
Log:

root@dm800:~# opkg install -force-overwrite /tmp/enigma2-plugin-extensions-back
psuite_7.3_mipsel.ipk
Installing enigma2-plugin-extensions-backupsuite (7.3) to root...
enigma2-plugin-extensions-backupsuite: unsatisfied recommendation for mkfs-ubif
There is no support (yet) for this kind of receiver. The installation will be a
orted!
Collected errors:
* pkg_run_script: package "enigma2-plugin-extensions-backupsuite" preinst scri
t returned status 1.
* preinst_configure: Aborting installation of enigma2-plugin-extensions-backup
uite.
* opkg_install_cmd: Cannot install package enigma2-plugin-extensions-backupsui
e.
root@dm800:~#