If your EX4 file was created before 2014 (Build 509 or older), legacy tools may still work:
Searching for "how to convert EX4 to MQ4 free upd" is one of the most common queries in the algorithmic trading community. The promise of a free, updated decompiler sounds like the holy grail. how to convert ex4 to mq4 free upd
What Marcus saw made his stomach turn.
Marcus stared at the ghost EX4 file on his desktop. If your EX4 file was created before 2014
Some advanced MQL4 programmers have written scripts that run inside MetaTrader to attempt memory dumping or disassembly. These are shared on Russian or Chinese trading forums. how to convert ex4 to mq4 free upd