Decompiling .ex4 files to .mq4 is generally impossible for modern MetaTrader 4 (MT4) builds. ⚠️ The Reality of Decompilers
Security Risks: Many files found with these specific keywords—especially those including "updated" or "top" in the title—are flagged as high-risk by security platforms. For instance, some versions of ex4-to-mq4-decompiler.exe have been found to contain malicious indicators such as process injection and registry modification. ex4 to mq4 decompiler 40432 updatedl top
If you need to modify a tool or lost your source code, consider these safer paths: Decompiling
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