I tried it, who knows what i did wrong, all i got is :
--- Installing: /external_sd/update.zip
E: Can't mount /cache/recovery/last_install
E: failed to open last_install: File exists
Finding update package...
Opening update package...
Installing update...
This package is for device: u8833.hwu8833,u8951,hwu8951: this device is y301a1.
E:Error in /external_sd/update.zip
(Status 7)
Installation aborted.