This is an updated ESR, that has the whole IOP side written from scratch. This time properly ;). Many new games gained compatibility, issues with others were fixed. I don't know of any that lost compatibility.
Pretty much only two types of games do not work:
- games that load below 1M (like some Sonic games)
- games that do transfers into EE memory area occupied by ESR (using "direct off" version will fix these)
Great thanks to everyone that helped testing.

PS. Stay tuned. EE side overhaul is on the way (it will take a few weeks, though).
