MT4 / MT5 decompilation FAQ

EX4 is a compiled MT4 program; MQ4 is editable MQL4 source. An EX4-to-MQ4 enquiry requests source recovery for an indicator or EA, with feasibility and the actual source-delivery scope assessed from the supplied file.

Yes. Provide the original EX5, terminal build and program type for assessment. We confirm whether the requested MQ5 source delivery is feasible for that file before agreeing the work. A filename alone cannot establish recoverability.

Existing reference ranges are USD 80–200 for one indicator and USD 200–500 for one EA source-recovery project. The file, version, dependencies and requested deliverables determine the final quote. Confirm the total and delivery list before payment.

Prepare the original EX4 or EX5, identify whether it is an indicator or EA, and list the terminal build, presets and companion indicators or DLLs. Explain the result you need. Start with the enquiry brief, then exchange program files through an agreed private channel.

The quote must state the deliverables. MQ4 or MQ5 source, a repaired executable and a newly implemented program are different outputs. Agree the source files, dependencies, compiled build and installation notes that your project includes.

Timing is confirmed after reviewing the actual file, dependencies and requested output. The written quote should identify the delivery window and verification stage; we do not publish one turnaround promise for every EX4 or EX5.

Agree the checks before work begins. Compare the original and delivered build using the same terminal, symbol, timeframe and inputs. Check relevant displays, alerts, orders or logs, and report reproducible differences before the agreed final handoff.

MT4 source recovery and MT5 migration are separate tasks. MQ4 source needs a scoped MQL5 implementation and behavior comparison to run as an MT5 program. Tell us at the start if MT5 is your final goal.

The first enquiry is free. Project work starts after feasibility, deliverables, total price and any deposit are agreed. Any agreed deposit counts toward the total; verification, the remaining balance and final files follow the written scope.

Submit software and materials you own or are authorized to have assessed or modified. Remove trading passwords, API keys and unrelated private files. The enquiry form collects the brief; it does not publicly upload or automatically decompile your program.