A: Use a hex editor to modify the EX4 directly. Search for the float value in the binary and change it. This is non-trivial but safer than decompiling.
You can attempt to recover some information, but not a working source code. Here is what you can do for free: how to convert ex4 to mq4 free upd
The search query is one of the most common in algorithmic trading forums. Traders want to unlock compiled files to learn, edit, or recover lost source code. A: Use a hex editor to modify the EX4 directly
Even if you succeed technically, you face serious consequences. how to convert ex4 to mq4 free upd
If you did not write the original code or buy the source license, decompiling is a violation of the MetaTrader 4 EULA and international copyright laws.