You posted this in the basehaxx thread as well, if you bothered to read
the most recent page of that thread, you would have seen
a link to this tweet by MrNbaYoh, with a new installer for basehaxx that works on 11.1 and 11.2, as well as instructions on how to use it. You need to direct the installer to PokéBank in the homebrew launcher, due to the implementation of PASLR for OR/AS.
Also, people can't really help you if all you say is "doesn't work"; you need to say how and when basehaxx (or anything else) doesn't work. Does it not work when trying to install it, or when trying to run the entrypoint itself? How exactly does it 'not work'? Do you get a red screen? A yellow screen? Try to give details when you have issues in the future.