newersumm This is the deal,the kernel exploit is functional up to the latest update(5.3.2),now,unless you want you develop code on it right now,its not still seen to still be on a lower FW considering we still have a greater access even on the newest FW,that being said,the webkit exploit on less than 5.1.0 gives easy access to such,but after the kernel exploit has been done,im sure a new webkit exploit should follow.
You can check updated info here:
https://gbatemp.net/threads/wii-u-homebrew-situation-and-faq.367627/
(Note that now it doesnt say its not recommended to be on the newest FW possible,but if somehow you want to stay on 5.1.0,you are welcome to do so just because of the one bug found on it and lower FW).
EDIT: Quote from same page:
You can check updated info here:
https://gbatemp.net/threads/wii-u-homebrew-situation-and-faq.367627/
(Note that now it doesnt say its not recommended to be on the newest FW possible,but if somehow you want to stay on 5.1.0,you are welcome to do so just because of the one bug found on it and lower FW).
EDIT: Quote from same page:
Currently, we have a userspace exploit that can be compiled and run via the Internet Browser. It currently works on versions 4.0.0 to 5.1.0.This isn't very useful at all for anyone who isn't a developer, however.