Downloading “EX4 to MQ4 v4.0.224.1” or similar tools from untrusted sources exposes you to:
Downloads for this specific decompiler version are frequently bundled with malware, trojans, or viruses on forums and file-sharing sites. Legal Standing: ex4 to mq4 v4 0 224 1 decompiler extra quality
MT4 builds are numbered. Build is extremely old—released around 2011-2012. Modern MT4 builds are over 1400+. If a decompiler claims to target build 224, it means: Downloading “EX4 to MQ4 v4
No decompiler can perfectly reconstruct original MQ4 source code. Here's why: ex4 to mq4 v4 0 224 1 decompiler extra quality