Due to an unfortunate momentary distraction, I mistakenly flashed CM13 to the stock Rom slot on my XT912 with Safestrap, obliterating the stock JB...I somehow had the impression it wasn't possible to overwrite the stock system. It actually booted, but as there was not enough space left to install Gapps, nothing much works. I now have CM13 running now in Slot 1, it's updating as I write, so I'll soon see how that works.
So, wondering what I have to do to reinstall the latest possible stock Rom in that slot...and where to grab the files. Can I flash a stock Rom in recovery or do I need to use RSDlite or fastboot? This was my first mishap after quite a few flashes, roots and unlocks, so it underscores the need to pay close attention. At least I didn't brick the thing....
Thanks all!