I found the TF card is inserted in. If u-boot is available in TF card, you will boot from it when you short-circuit the MRegister, so you had better to remove the TF card in order to boot into MASKROM mode successfully.
I found the TF card is inserted in. If u-boot is available in TF card, you will boot from it when you short-circuit the MRegister, so you had better to remove the TF card in order to boot into MASKROM mode successfully.