Not that much then, i don't install much and always triple check even before installation, always have my tubehax local enabled, never had problem of stability of some sorts.
Tbh i don't launch fw.img that much, most of the time it's just to install "legit" games that work without cfw, i do hear you, updating is great, but i don't really "need it" everything works fine and do what i need it to do.
Then your setup will work for you, but the majority of users will not be so careful.
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It's not confirmed that redNAND is update proof though, it is just assumed.
Yes, it is...
RedNAND redirects all NAND r/w functions except for sleep mode which uses your SysNAND internet settings, which is why we disable internet and set DNS servers on SysNAND.











