Hi,
Your log was not completed in the first comment. Now it has the full one.
E> OCR failed, error = 39390706
E> Failed to open sdmmc-3, err = 39390706
W> Ignoring init failure for device 0-3
E> Error in command_complete 18000 int_status
E> OCR failed, error = 39390706
E> Failed to open sdmmc-3, err = 39390706
W> Ignoring init failure for device 1-3
E> Unknown device 7
E> Unknown device 8
I> Task: Partition Manager Init (0x40002d25)
W> Cannot find any partition table for 00030000
PARTITION_MANAGER: Failed to publish partition.
I> Task: I2C register (0x400006a5)
I> Task: Register exit handlers (0x400005f5)
I> Task: Enter 3p server (0x400018e9)
I> USB configuration success
I> Populate chip info
I> RAM_CODE 0x4000401
I> Populate eeprom info
I> Populate eeprom info for module cvm
I> dump bct
I> Rebooting : reboot-recovery
And then it looks like your board reboot after above line. The flash process only ran until Rebooting : reboot-recovery got printed.