cubox i don't boot after last update

[andre77]

hi, today i have updated my cubox after one month. The update has succeded fine but when i have tried to reboot , it doesn't start anymore. the hdmi screen stay black so i have tried to connect via serial console and this is the output from console:
$this->bbcode_second_pass_code('', '

U-Boot 2013.10-rc4 (Nov 05 2015 - 12:59:56)

CPU: Freescale i.MX6Q rev1.5 at 792 MHz
Reset cause: POR
Board: MX6-CuBox-i
DRAM: 2 GiB
MMC: FSL_SDHC: 0
In: serial
Out: serial
Err: serial
Net: FEC [PRIME]
(Re)start USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 1 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
scanning usb for ethernet devices... 0 Ethernet Device(s) found
Hit any key to stop autoboot: 0
mmc0 is current device
** File not found /boot.scr **
617 bytes read in 25 ms (23.4 KiB/s)
Importing environment from mmc0 ...
Booting from net ...
Using FEC device
TFTP from server 10.0.0.200; our IP address is 10.0.0.7
Filename 'zImage'.
Load address: 0x10800000
Loading: ##################################################
3.6 MiB/s
done
Bytes transferred = 6204904 (5eade8 hex)
Using FEC device
TFTP from server 10.0.0.200; our IP address is 10.0.0.7
Filename 'imx6q-cubox-i.dtb'.
Load address: 0x18000000
Loading: ###################################################
212.9 KiB/s
done
Bytes transferred = 33907 (8473 hex)
Loaded imx6q-cubox-i.dtb
Booting zImage
Kernel image @ 0x10800000 [ 0x000000 - 0x5eade8 ]
## Flattened Device Tree blob at 18000000
Booting using the fdt blob at 0x18000000
Using Device Tree in place at 18000000, end 1800b472

Starting kernel ...

')

what can i do to view what's the problem?

[moonman]

Which kernel did you have installed? lnux-armv7 or linux-imx6? Latest mainline kernel (linux-armv7) is known not to boot as of now

[andre77]

The kernel is linux-imx6. The problem was that the dtb file is n the dtbs directory and the old is was in the /boot/ directory. I have copied the file form /boot/dtbs/ in /boot/ and it is started.

Thanks

[moonman]

Update your uboot

[andre77]

how can i update the uboot? it seems to be already updated..

$this->bbcode_second_pass_code('', '
[andre@cubox ~]$ yaourt -S uboot-cubox-i
attenzione: uboot-cubox-i-2013.10-5 è aggiornato ma sarà reinstallato
risoluzione delle dipendenze in corso...
ricerca dei pacchetti in conflitto in corso...

Pacchetti (1) uboot-cubox-i-2013.10-5

Dimensione totale dei pacchetti da installare: 0,27 MiB
Dimensione netta dell'aggiornamento: 0,00 MiB

:: Vuoi procedere con l'installazione? [S/n] n
[andre@cubox ~]$

')