Originally Posted by mrWodoo
Can I update my CFW 4.21 (Rogero) to CFW 4.3 (Rogero)? Or do I need to go to 3.55 and then 4.3 ?
People have reported that working fine. But it's isn't the proper way and most would recommend against doing it that way.
Personally, I wouldn't see a problem myself - but I'm not advising that to you.
It's not actually known if that really is safe or not, it certainly can't hurt to do it properly apart from the time hassle.