Ok Just to clear up my previous message. It is a NanoVNA-H as marked on the board but it is the unit with the 4" screen, so using the NanoVNA.H4.v1.2.00.dfu is correct. As for the other comments that the failed chip "si5351 init Failed", I no longer get the message after upgrading the firmware, however the jog wheel and the touch screen are not active. I have attached an image of the unit to show the screen after the upgrade. Unfortunatly, I did not take a photo of the error before I did the upgtade.
Chad (ZS2CJ / ON9CJ)
