I have TWR-LS1021A, I broke the u-boot from bank0. So I switched to bank1 by changing SW3 and J19, J20. From bank1 uboot prompt, I re-programmed uboot for bank0. Then I switched to bank0 but update u-boot did not work. Then I shifted back to bank1. But now I am not able to see any messages from bank1 uboot. But console start showing messages from linux kernel boot. So i feel uboot is running but it is not showing message. What can be the issue?