Definitely could have been my version of fastboot as it worked after I updated to the most recent version. Seems strange though that there was no issue reported after the initial flash. Never was able to boot to P until I did that.
---------- Post added at 04:23 AM ---------- Previous post was at 04:19 AM ----------
Why did you flash to both slots? Not sure I understand. Maybe for some reason the flash on my phone was flawed somehow even though reported successful.
I always flash to both slots just to avoid any unforeseen errors. If you've ever watched the read out during a fastboot update, not all the system files flash to both slots, which is why I do it. It's probably overkill, but it works for me :good: