Someone PM'd me a little while ago about going from 232 to 244 and what my thoughts are on it. I thought I'd share my answer with the class....
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I don't mind people going to 235+ as long as they are aware of, and accept, the risks of doing so. First is you can't FXZ to 905. So that complicates things in the event of a brick situation and certainly for applying new updates. That being said, I designed the HoB to help us insane people that live out on the edge. I've made it as safe as I possibly can. That does NOT mean risk free, but, I have a few safety nets in there.
First, I can build an on the fly mini-fxz to repair an install gone wrong. (I.E. brick scenario). The requirement is that the update for the version you're trying to repair *MUST* remain on the sdcard-ext. With that requirement met, I've yet to be able to unbrick someone. It's ALMOST as good as a real FXZ.
Second is the ability to add new updates to the HoB without my intervention. Meaning, let's say you get your hands on 251 and you see that it fixes EVERYTHING. I'm out camping at a NASCAR race for 4 days and don't have the ability to create an update support installer for it. (Yes, that's going to happen in 2 weeks, so....). You can add a new 251 directory, append 251 to the zip filename, and run the HoB batch file. It'll ask if you want to create a new boot img for it, you tell it yes, plug your phone in, and when the menu comes up, you'll have a INSTALL 251 and REINSTALL 251 option. Choose the INSTALL 251 option and you're no longer stuck on 244.
However, I'd caution you on newer leaks. They need to be checked with the CDTParser.exe that's in the utils dir. Basically extract the CDT.bin from your new update, and open it with the CDTParser.exe. Compare it with the CDT.bin from 244. (You can open 2 instances of the CDTParser.exe at the same time). If they're the same, you're good to go. If anything in there goes UP in security, consult the experts before installing.