Hello, I bought on ebay MMDVM_HS_Dual_Hat http://www.hamzavody.cz/foto/mmdvm.jpg http://www.hamzavody.cz/foto/hs.jpg I want to update the firmware by using the command sudo pistar-mmdvmhshatflash hs_dual_hat and I will see this result http://www.hamzavody.cz/foto/chyba.jpg some ideas? Thank you