⚠️ If you lost your own code, check your MetaTrader MQL4/Indicators or Experts folders for an MQ4 backup first. If it's someone else's code, the only reliable way to get the source is to contact the original developer . If you'd like, I can help you: Write an iCustom call to pull data from your EX4 file.
If your EX4 was compiled before 2014 (MetaTrader build 509 or older), you can use a build-specific decompiler. Many older free tools like ex4_to_mq4 v2.1 work flawlessly on legacy files. how to convert ex4 to mq4 free top
For advanced users, using open-source byte-code extractors to at least see the underlying logic. ⚠️ If you lost your own code, check
The burning question on every trader’s mind is: If your EX4 was compiled before 2014 (MetaTrader
Converting EX4 to MQ4 is widely considered impossible for files compiled on modern versions of MetaTrader 4 (build 600 and later). While older software could occasionally decompile these files, current EX4 files are machine-level instructions that do not contain the original human-readable source code. Why Free Converters Don't Work
These plugins can be easily installed and used within the MetaTrader 4 platform.