A software tool designed to reverse the compilation process, turning an .ex4 file back into an editable .mq4 file.
If you are the original developer, the only reliable way to get MQ4 code is from your own backups or the MetaEditor project files.
Use the built-in MQL4 iCustom Reference command inside your new script to request buffer values directly from the closed indicator. 2. Monitor Terminal Behavior via the Data Window
If you purchased the EA, reach out to the original programmer. They can provide the .mq4 file or make the modifications you need.
Reliability & Usability
What or limitation are you encountering with the EX4 file? Is this file a custom indicator or an Expert Advisor (EA) ? Do you have contact with the original developer ?
It is crucial to note that this likely refers to an older MT4 build. Based on available information, the most frequently referenced, modern decompiler version today is , which was released around 2014. Therefore, a tool for "build 40432" is likely a legacy tool with limited use.
Here is a summary of the key decompiler tools mentioned in user discussions:
Most modern downloads labeled as "EX4 to MQ4 Decompiler Updated" are disguised malware bundles. ex4 to mq4 decompiler 40432 updatedl updated
: Many sites claiming to offer "updated" or "cracked" versions of the 4.0.432 decompiler actually distribute malware or fakes
He ran the decompiler in a sandbox VM. It hummed, read a file, spat out a folder full of mq4 files — cleaner, almost too clean. The first file opened like a diary written in a language he recognized and did not. There were comments in the code that had not been in the original ex4. Phrases like //Remember the river and //Don’t cut the last thread dotted the scaffolding between functions.
This specific version number (4.0.432) frequently appears in older forum threads and "updated" download links across sites like Google Groups The Claim:
Historically, EX4 files were easy to decompile. You could run a simple program, and it would spit out the original MQ4 code. However, several years ago, MetaQuotes overhauled the MQL4 language to bring it in line with MQL5. This change introduced: A software tool designed to reverse the compilation
This is the source code file format. Written in MQL4 (MetaQuotes Language 4), it contains the plain-text logic, strategies, and variables created by the programmer.
Do you of the file, or is it a commercial tool ?
Legality & Ethics
However, the specific file name pattern—often listed online as "EX4 to MQ4 Decompiler 4.0.432.1 Updated"—presents significant risks. Many of these links lead to outdated software, fraudulent schemes, or high-risk malware downloads. 📊 Understanding the File Formats: MQ4 vs. EX4 Reliability & Usability What or limitation are you
If you are trying to or just see how it works.