You might be misunderstanding things a bit - CFW is not an addon over the official firmware like HEN is; it's a full firmware by itself and it replaces the official firmware. Granted, CFW is basically official firmware modified in a way that removes a lot of restrictions and adds a lot of goodies, but it is still a full firmware file. Therefore you can't have both an official firmware (whether old or new) and Evilnat 4.91 - when you installed the CFW the official firmware was completely overwritten by it, and since Evilnat 4.91 CFW is based on OFW 4.91 then you are currently on 4.91, and not a trace of the older version remains.Hi All,
I currently have an older official firmware but with Evilnat 4.91 installed.
If I installed the official 4.91 firmware what would happen?
More importantly is it even necessary to upgrade the official firmware if Evilnat 4.91 is installed?
Well, there's also the DB firmware, which is nearly identical to OFW. The only difference is that it would allow you to install CFW without going through bgtoolset again. AFAIK nobody ever got banned for using it.some people want to stay on OFW because they don't need the features of CFW. and with CFW there might be a chance to get banned by Sony. even if the chances are slim as far as i know
i used CFW to install a new Blu-ray drive in a FAT, but don't need it otherwise (at least not at the moment) so I reverted back to OFW.
And with bgtoolset it takes like 1 minute to jailbreak again if I ever wanted to.