PROCESSOR-SDK-J784S4: Boot from eMMC from BOOT paritions

Part Number: PROCESSOR-SDK-J784S4

Tool/software:

Hi Team,

    I want to boot from eMMC UDA partitions in my J784S4 custom board.As part of that I am writing boot contents to first partition of UDA i.e,/dev/mmcblk0p1 nd also enabled PARTCONFIG to user mode as shown in attached figure.

  After writing the contents successfully, I changed the boot switches to eMMC mode and powering on the board but it resulting blank screen.
And I want to specify that we're having single/same boot switch configuartion for both BOOT,UDA modes of eMMC booting.

FYI, I am able to write/read contents to/from UDA partitions of eMMC for some other purposes and also able to mount the rootfs from eMMC.

And I compared the hardware schematics of my custom board with J784S4 .But I didn't find any notable difference.

   So, what can be the possible reasons to happen this and what can be the fix for that?