After system upgrade... A4 Totally OFF! Help please

Hello, after a software upgrade, the screen of my A4 is totally white, with only the “E” big logo in the middle, another E in the down left corner, and 1.12B in the down of the right corner… And the Analog doesn’t start!

I have try to start the A4 with Analog Menu, TEST MODE OK, FACTORY RESET= same problem…

Any help please?
Thanks in advance, Paolo

Did u use the correct power-supply ?