Well my system is back, I used @Fox_exe link and downloaded the v04 firmware
I restored bootfs.img & kernel.img & config.img with Ubuntu’s application DISKS
I did not use any command and terminal. Just Disks.
Now Dashboard works fine, and the firmware version is: v04.01.02-417
But there is still two problems, first I still can not update the firmware.
Check for Update says: No Internet access. Check your network and try again. (220004)
And the Update from File says: Device does not have enough space for upgrade.
The second and bigger problem is I can not take ownership or change the permission of any file. And when I want to delete something, the file will be deleted permanently instead of going to Recycle Bin. Is there any way to fix this? should I format the main storage drive?
I want to thank you all, I don’t know where you are from, but I’m certainly sure you are very very good people, special you @Bennor, you are a true angel. Thank you very much for every thing.