The question in question is [revised title] Can I install any iOS version I wish by picking and choosing which firmware to restore?. I usually just mark anything that has to do with installing different iOS versions as a duplicate of that question. The answer I have on that question covers all scenarios including upgrading and downgrading. However, the question specifically asks for a downgrade.
I come here again asking about this because of the short conversation I had with Mark on this question here that specifically asks for an iOS upgrade Can you update an iPhone 4 on iOS 6.1.2 to 7.0.6 using an IPSW file?. I tried marking that question as a duplicate of Can I install any iOS version I wish by picking and choosing which firmware to restore?, but Mark seemed to disagree with me.
The real problem is that all of these questions can be answered with my one answer.
At one point, I did make my own generic question and answered it myself, but the mods marked it as a duplicate of Can I install any iOS version I wish by picking and choosing which firmware to restore?.
Can we make this question more generic to include all unorthodox installations of iOS? If not, can I make a question that actually is generic and move my answer to it and not have it marked as a duplicate?
Update: Can we revisit this? We seem to get duplicates of these iOS upgrade/downgrade/reinstall questions three to four times per month.