Recovery mode on Colibri iMX8

We are evaluating Colibri iMX8QXP Recovery mode, since our custom development board will not have SD slot available.

Octal SPI Flash is going to be used as a boot media (which will not have image programmed initially).
Is there an demo image file (uuu-u-boot-imx8qxp.imx) available for UUU utility use case?
What UUU or MfgTool release should be used?

Thank You