I’ve reached out to MNEMO via email and Skype... Hoping he responds and can offer a solution as it’s highly suspect that the 9/5/17 firmware release has been problematic for at lease two of us in the same way.
I did update the date on my console this morning hoping that might have been the problem but unfortunately it had no effect.
GDI images that once worked now simply reboot the console and any attempts to reload the firmware cause the system to reboot into audio disc mode...
The whole purpose for updating the firmware was to see the updated boot menu iso since it never worked for me, the blue menu worked fine, should have stuck with that