Trouble Getting started with Stratix 10 SOC

I've recently purchased a Stratix 10 SOC board for experimentation.

Although I've got the out of the box GHRD loaded and working, I've been struggling to get ANY changes I've made properly loaded into it.  For example just changing the sysid in qsys and recompiling, generating the .sof and then converting it to an .rbf and loading it in uboot causes an error:

command 'load' failed: Error -110

I understand that the Stratix 10 has a lot of security to ensure the bitstreams are validated and consistent, etc, and I'm sure this is useful in some contexts.  But is there a way to disable some of this security to help a beginner get to the point where they can quickly start seeing designs loaded and working?

NOTE:  I'm not a total beginner.  I've been experimenting with the Cyclone family (DE10-Nano, etc) for a few years now.  But the Stratix is obviously a whole other level.

Thanks,