This process will erase your eMMC and will install a new
U-Boot and Android firmware images on the eMMC.
Press CTRL+C now if you wish to abort or wait 10 seconds
to continue.
>> Installing U-Boot boot loader (target will reset)
reading u-boot-ccimx8xsbcpro2GB-B0-flash.imx
1075200 bytes read in 67 ms (15.3 MiB/s)
switch to partions 1, OK
mmc0(part 1) is current device
MMC write: dev # 0, block # 2, count 2100 … 2100 blocks write: OK
Reading back firmware…
MMC read: dev # 0, block # 2, count 2100 … 2100 blocks read: OK
Verifying firmware…
Total of 268800 word(s) were the same
Update was successful
mmc0(part 1) is current device
Saving Environment to MMC…
Writing to redundant MMC(0)… done
resetting …
Did I use wrong image or something wrong with the board?
your subject states that you are using:ccimx6 board, however, log shows you are using ccimx8 u-boot image:
u-boot-ccimx8xsbcpro2GB-B0-flash.imx
Those are two completely different platforms