I have updated NiHuShu's fork of brosexec to add SD2SP2 support and also sue dolxz.exe which has better compression. Here are the binaries for brosexecconf.
Also, for some reason it seems I have permisions to NiHuShu's github fork (I commited accidentally, I wanted to just make a pull request), I hope he doesn't mind.
I've noticed that even building the original code for brosexec produces a bigger binary that the ones I uploaded in 2015. This is most likely due due to libraries being bigger so there's little we can do about that besides going to the very first compatible set of builds that can compile with sd2sp2 support in the hopes we can get a smaller file.
In fact, the iplboot project was discontinued as stated in it's github page: "Because the most recent devkitPPC builds generate huge code, I can no longer make iplboot fit in Qoob SX flash."
Also, I've recompressed brosexec with dolxz, which saves 1 block. I've also recompressed the original non-sd2sp2 versions of dolaunchers, which save some blocks for brosexec (2 blocks each). I'll be uploading to release page at github too.
BTW the brosexec conf builds are untested, but the code is the same NiHuShu added to brosexec, so it should work fine.
EDIT: also available here https://github.com/suloku/dolaunch/rele ... /0.2-dolxz