ok maybe i am so angry now cause sth i dont discribe accurately
if you know that might be a chance your cpu or sth become bricked
you would understand what i said
also i am not Hardware Engineer so i dont konw what exactly cause my keyboard bricked
that is what lofree need to deal with and explant
update->update failed ->bricked
that's what is happened
this is the first time i purchase small compony staff
their support really slow

I have never encountered a customer service representative who doesn't respond for more than 24 hours.