That's all I'm trying to find out, all I'm getting are people who state that it is working on 5.5.1, but I can't seem to find a post on what can't be used with 5.5.1. 
Kernel exploit leaked that's compatible with most 5.x.x firmwares. It's very stable. Look at the Definitive Guide for more info on how to set it upNot at all, I'm merely asking for a post on where the whole 5.5.1 was stated to be compatible originated, nothing more
Boy was my face red lol 
*Sigh* I have no words, really, other than I feel pretty bad for doubting the safety of the real 5.5.1 update, which many, including NWPlayer123 are on. Tubehax is pretty much unstable and useless given how often it crashes, and given that IOSU exploit is reported to be usable on 5.3.2 and 5.5.1, I mean really, what have I got to lose? The primary reason I was on 5.3.2 was because for a while, HBL, LoadiineGX2, etc only worked on FW before 5.5.x and now that they work, I might as well. It'll make getting on the eShop a lot easier for me anyways. I'm not bereft of emulators/ROMs as I have other devices I can play, so it's not a deal-breaker, I wasn't sure what happened, or why, etc. My apologies.
Then again, I was on 5.3.2 before, so I guess that's a thing.
I'm kinda staggered how much everyone wants an IOSU exploit, considering how they have a public one that they forgot about and are now actively stopping people from using. Although again, it's just details of an exploit, not a nice ELF you can run (yet). If you ever see someone who might have programming experience, make sure they don't update to 5.2 or higher.*Shrug* I don't really have any programming expertise under my belt, so, I mean, are you saying that I made an egregious mistake by going to 5.5.x? Now people tell me.
To be honest, I reckon at this point it'd probably be better to not develop ioctlvhax since it would create that whole 5.3.2 kexploit thing again. After all, 5.5 IOSU is "just around the corner"
I'd still argue that it's probably better not to tell people to upgrade so they can't use it.
I only tell people who are trying to use Loadiine and are having issues to update. If all they want is to pirate games, then 5.5.1 is the best version for that. The fact that the hacks work on the latest firmware make it extremely easy and painless for users to play "backups," that even novices are using Loadiine. These users are most likely not going to be interested in an IOSU exploit, since it will probably enable NAND-writing, causing chances of bricking.
I forget how you spell his name, but its by a committed user from the community that runs a DNS similar to Tubehax, except it actually stays up a majority of the time. It's the first DNS that's bolded. Highly recommend it. There's also that new DNS that was running a while back in this forum, can't remember what it was or who ran it, but it seemed to be highly reliable as well.
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Skelletonike:
