Comment 6 for bug 1769669

Just some more information here. While we have had this corruption on multiple disk images, the reproduction steps outlined are using the following snaps:

core: 4409
pi2-kernel: 51

If you also look at the attached image from one of the many bricked screens, you can see that it was upgrading to 4489. Hence the issue is likely something in the upgrade process between Core 4409 and 4489. That said, I have no idea if has to do with those particular versions or if it is in the upgrade logic.