As long as the boot statement is correct and you have downloaded the .tar file onto sdflash and extracted the .tar file onto sdflash and their is indeed an sdflash card there it should come up fine. Below is a shot of the directory on mine. I did h...
This happened to me going from code 15.0.2-EA1 to 15.2.4-EA5. I saw that the jeevesfpga.rbf was withing the .tar file, so downloaded the .tar onto sdflash and extracted it onto sdflash and changed the boot statement to boot system sdflash:iosfilenam...