According to the man AhMan himself, he'll be releasing an update that will be compatible with CFW 5.00 M33. He says that he will be releasing the update as soon as irshell.org is back online:
Just to let you know I'll be releasing another iR Shell public release for 5.00M33. It will have all the SE features, including infrared remote learning. Currently, irshell.org is being re-designed and re-worked by some of the private forum members. Once the site is completed, the public release will be out.