None require cracking. All are developer-approved or community-sourced safe files.

The term "crack" in the context of the 737 MAX can also refer to real-world mechanical findings, though these are unrelated to the simulation software: iFly 737 MAX8 for MSFS: $69.95 - Flight1.com

iFly Airlines did something unheard of. They issued a public statement before the FAA could call.

The mechanic held up a tablet. "Whole new meaning to 'problem,' sir. Atlanta says don't even start the APU. We're borescoping the tail."