Hi
We sincerely apologize for the inconvenience caused by the delay in addressing your Forum queries. Due to an unexpected back-end issue in our system, your Forum cases, along with others, did not get through as intended. As a result, we have a backlog of cases that we are currently working through one by one.
Please be assured that we are doing everything we can to resolve this issue as quickly as possible. However, this process will take some time, and we kindly ask for your patience and understanding during this period. The cases will be attended by AE shortly.
We appreciate your patience and understanding, and we are committed to providing you with the best support possible.
Thank you for your understanding.
Back to your issue, have you verified the SD Card is working? Because from the logs there are error in reading the SD Card.
I would suggest you try the uboot build flow in the link below:
https://www.rocketboards.org/foswiki/Documentation/BuildingBootloaderCycloneVAndArria10#Cyclone_V_SoC_45_Boot_from_SD_Card
Regards
Jingyang, Teh