No, only for a “How To” guide, to help other people. 
Firmware updates I would simply use the .tgz OTA update.
BUT, if I was getting unexpected / unexplained errors, and the fix wasn’t obvious / quick / easy I wouldn’t waste time chasing my tail trying to fix it, I would do a full wipe, and start clean.
Or if I was changing firmware eg. from RogueMaster to Unleashed etc
Again, not saying my way is the right way, it’s just the way I do it.