Thanks Meter 60
Join Date: May 2010
Location: Minneapolis, MN, USA
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I have a very similar problem, though I don't consider myself new to flashing.
I did advanced wipe (system, dalvik, cache, and data), though TWRP was complaining about being unable to mount /cache. I also had to select "use rm -rf instead of formatting", because formatting didn't work (recovery would reboot). Then I tried flashing the ROM linked (the GigaWatts Pro), but it would not boot (gets stuck on black screen after boot logo).
Since I had a backup of the stock ROM, I figured this wouldn't be a problem. But now TWRP can't mount /system and therefore I can't restore my backup - it just says "failed".