Hacking [Noob warning] What is b9s?

[Overwrite_Pixel]

OKAY, since I CAN NOT find a forum that's noob-friendly, can someone explain what the difference between Boot9strap and A9LH is?? Should I upgrade? Is it POSSIBLE to upgrade to it if you're on 11.5? What are the benefits? Downfalls? And most importantly, can you access the Homebrew Launcher?
I mean if I find it interesting, I'll go on and upgrade, but otherwise I'll roll back to 11.3 to use HB again.

 

[Xenon Hacks]

boot9strap is the newest and best method of launching Custom Firmware that gives us nearly full control of the system only milliseconds into boot, which is similar to the effect of BootMii for the Wii. It gives us even earlier control than arm9loaderhax did, and, unlike standard sighax, boot9strap uses an NDMA overwrite exploit in order to gain Boot9 code execution. This means that any console running boot9strap is capable of dumping the console unique OTP (OTP.bin), the ARM11 bootrom (boot11.bin), and the ARM9 bootrom (boot9.bin).

The benefits of boot9strap over other Custom Firmware launch methods are numerous, and as such it is recommended to use this guide over any other that relies on outdated software (such as menuhax + rxTools, arm9loaderhax, or even normal sighax).

 

[Lacius]

All other reasons aside, the upgrade to B9S is required if you want to use newer versions of Luma3DS and other applications.

 

[Xeonhawk]

B9S is newer and it takes like 5 mins to upgrade from al9h to it

 

[Aletron9000]

You can still access the homebrew launcher using the Rosalina menu added into luma as well as switch any application to the homebrew launcher.