The newest Etcher version works fine for flashing the new MCU2 v2.0.6. Old Etcher (v1.18.11) fails to load on my Mac now, advises to immediately dismount or will cause damage.
I was trying to update one of my batch 1 apollo and now that the new version of etcher failed to flash the compressed img and my mac won't load etcher v1.18.11 I have a paperweight with no os how did you get around this?