Raxda rockpi N10 B - Recovery process

Hi All.

I tried to boot the board with the latest u-boot on the eMMC and it failed to detect the boot.
I have followed the steps from the below web page
[0] https://wiki.amarulasolutions.com/bsp/rockchip/rk3399pro/rock-pi-n10.html

I flash the image to eMMC module. and now it failed to boot.
Please help me recover the board so that I could debug the issue further.

U-Boot TPL 2021.10-rc4-00055-g8284d6f838-dirty (Sep 26 2021 - 20:29:22)
Channel 0: LPDDR3, 933MHz
BW=32 Col=10 Bk=8 CS0 Row115 CS1 Row<15 CS=2 Die BW=16 Size=2048MB
Channel 1: LPDDR3, 933MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB
256B stride
Trying to boot from BLOTROM
Rdturning to boot ROM...

U-Boot SPL 2021.10-rc4-00055-g8284d6f838-dirty (Sep 26 2021 - 20:29:22 +0530)
Trying to boot from MMC1
Card did not respond to voltage select! : -110
spl: mmc init ailed with error: -95
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

If you don’t know how to recover the board, how can you debug?

There is a maskrom button, press and hold the maskrom button, press reset. The device is in maskrom mode now.

Thank you, I have managed to recover the board with rkdeveloptool and was able to port u-boot 2021.07, but the latest u-boot fails to come up with the below messages.

U,Boot SPL 2021.10-rc4-00055-g8284d6f838-dirty (Sep 26 2021 - 20:29:22 +0530)

Trying to boot from MMC1
Card did not respond to voltage select! : -110
spl: mmc init failed with error: -95
SPL: failed to boot from all boot deviceC

ERROR ### Please RESET the board