Again sorry for misinterpreting the post, but it was clearly posted in the wrong section so I guess my reaction was correct.
Anyway if this chart shall be posted in the hacking section I would suggest adding a symbol for the beginning and end of the flow, as it is otherwise incorrect and doesn't comply with the syntax of a flow chart and I would add the possibility to dump the NAND per hardware-mod.
It is really cumbersome, but there is nothing safer than doing this prior to updating as maybe there will be an option to have xorpads or something similar when enough progress was made, so you could have the most possibilities when updating now.
Also emuNAND was already mentioned by one of the members of the team working on the Wii U so I guess that possibility should be also in the chart, it could maybe even work perfectly with the dumped updated NAND and the previous dump as it does with the O3DS and N3DS up to 9.5.
Even if this possibilities aren't realized yet, missing them when they're released would be a real shame and missing them because of a flow chart would be even worse.