The software you are referring to, EX4-to-MQ4 Decompiler 4.0.401.1
ex4-to-mq4-decompiler-4.0.401.1 is a decompiler tool designed to reverse-engineer MetaTrader 4 (MT4) expert advisors (EAs), indicators, and scripts from their compiled (.ex4) form back into their source code (MQ4). ex4-to-mq4-decompiler-4.0.401.1 225
Cons:
Platform Compatibility: Modern versions of MetaTrader 4 (Build 600 and above) use updated encryption. Older decompilers, including many versions of 4.0, often fail to work on newer .EX4 files. Better Alternatives The software you are referring to, EX4-to-MQ4 Decompiler 4
EX4-TO-MQ4 Decompiler 4.0.401.1 is a legacy software tool designed to reverse-engineer compiled MetaTrader 4 (MT4) files (.ex4) back into human-readable source code (.mq4). Developed by the Purebeam.Biz Decompilation Process : A detailed explanation of how
: Some decompiled EAs are modified to include hidden code that can negatively affect your trading results. 4. Modern Alternatives