Fecurity Helper

What is FCommand?

FCommand is an unofficial, free GUI wrapper for LAUNCHER.exe. It builds the exact same command line you would put in a .bat file - but through a graphical interface, with validation, saved profiles, and one-click launch.

• No command-line knowledge required - every parameter is a toggle, radio button, or field
• Save unlimited profiles, each with its own SID so your hardware fingerprint stays repeatable
• Two layouts - Compact panel or two-pane Normal window
• Light and dark themes, four languages, and a fully portable single .exe (no installer)
• Downloads LAUNCHER.exe for you straight from MEGA - no browser, no manual navigation
• Updates itself - checks for new FCommand builds and installs them with SHA-256 verification

What's New

Complete UI redesign

The whole interface was rebuilt from scratch. Gone are the old menu bar; the app now has a custom frameless title bar with inline Theme / Language / Mode / Help buttons.

Two layouts - pick the one you like

Switch anytime from the Mode button in the title bar. Your selection will be saved.

Built-in auto-updater

FCommand now keeps itself current:

• A silent check runs a few seconds after startup - no popup if you are already up to date
• Manual check anytime via About → Check for Updates
• The update prompt shows the new version, release date, download size, and full changelog
• Every downloaded build is SHA-256 verified against the signed manifest before it is saved - a mismatch aborts and deletes the partial file
• Update is a clean swap-and-relaunch, with automatic rollback if the swap fails
• Skip this version is remembered, so a release you dismissed will not nag you again

Live CPU detection

FCommand finds your CPU manufacturer via CPUID and shows it as a status dot. AMD users get a warning dot plus the Lite Mode recommendation, and the AMD-only -v4 option is surfaced accordingly.

Encrypted, portable settings

launcher_settings.json is now Encrypted, because it can hold your license key. FCommand stays fully portable: at rest it keeps exactly two files in its folder (FCommand.exe + launcher_settings.json). Nothing is written elsewhere period.

Smarter MEGA downloads

• The file picker shows each file's full path, size, and upload date - so you can tell which build is newest at a glance
• Nested MEGA folder shares now resolve correctly
• Irrelevant files (tool.exe, DeviceInterfaceSpooferPerm.exe) are filtered out of the list
• Antivirus quarantine detection: FCommand re-checks the downloaded file after a few seconds and warns you clearly if Defender silently deleted it

Key Features

• Profile system - save named configurations with their own SID; add, edit, remove, switch instantly
• Full parameter coverage - every documented launcher argument has a control
• Custom parameters field - pass any extra flag literally, with normal quoting rules
• Multi-language UI - English, Русский, Español, Italiano (switch from the title bar; app restarts to apply)
• Light / dark themes - applied live, no restart
• Launcher auto-discovery - finds LAUNCHER.exe next to FCommand or in Desktop / Downloads / Documents
• Built-in Help - General, Performance, Security, Profiles, and Advanced topics
• VC++ runtime check - warns if the x64 redistributable the launcher needs is missing
• Input validation - SID, delays, and license key format are checked before launch
• Correct working directory - the launcher is started in its own folder, exactly like a .bat sitting next to it

Supported Arguments

How to Use FCommand

1. Download the .exe from the link below.
2. Run FCommand.exe - no install step, no dependencies to add.
3. Point it at the launcher, using whichever is easiest:
   • Auto-detect - put LAUNCHER.exe next to FCommand, or in Desktop / Downloads / Documents
   • Browse - pick the executable manually
   • Download - pull it straight from MEGA inside the app
4. Create a profile (the + button) so your SID is saved and reused on every launch.
5. Configure your options:
   • Spoofer on/off, Secure Boot emulation
   • Lite Mode and Lightweight Mode
   • HVCI, V4 (AMD only), Secure Boot bypass mode, Secure Boot auto
   • Spoofer delay and injection delay in ms
   • License key + key repeat count
   • Any extra flags in Custom parameters
6. Click Launch. FCommand assembles the command line and starts the launcher.

Profiles and SID

A profile stores a name and an optional SID (0–4294967295), plus the full option set that was active when you saved it.

• Spoofer on + no SID saved → FCommand offers to generate a random SID and store it in the profile, so the next launch reproduces the same hardware fingerprint
• Launching with no profile still works; a random SID is generated for that run and is not saved
• -sid and -seed do the same thing on the launcher side - use -seed via Custom parameters if you prefer that flag

Downloading the Launcher from MEGA

1. Click Download next to the launcher path field.
2. FCommand fetches and decrypts the MEGA folder listing and lists every .exe it finds - with path, size, and upload date.
3. Pick the build you want and download; decryption is handled transparently.
4. The launcher path is filled in automatically when it finishes.

If the download vanishes: Windows Defender sometimes quarantines a freshly written .exe within seconds. FCommand detects this and tells you. Go to Windows Security → Virus & threat protection → Protection history, allow the file (or add an exclusion for the FCommand folder), then download again.

The download source URL is configurable in Advanced options → Download, if it ever changes.

Keeping FCommand Updated

• FCommand checks for updates quietly at startup and never interrupts you when you are current
• When an update exists, you get the version, date, size, and changelog - then Update now, Later, or Skip this version
• The download is SHA-256 verified before anything is replaced; a failed verification aborts safely
• After install, FCommand relaunches itself and cleans up the old binary on the next start

You can always trigger a check manually from About → Check for Updates.

Tips and Troubleshooting

• Blue screen or freeze after launching the game? Set the injection delay to 120000 (2 minutes).
• AMD CPU? Enable Lite Mode - FCommand suggests it automatically. -v4 is AMD-only too.
• Secure Boot errors (e.g. 0x86100007) or a board with custom Secure Boot keys? Use the Custom keys bypass mode. If the standard bypass is not supported on your motherboard, enable Secure Boot auto.
• Delays that seem ignored are expected - the launcher discards spoofer/injection delays below its own defaults.
• Launcher will not start at all? Install the Microsoft Visual C++ x64 redistributable. FCommand warns you if it looks missing.

Important Notes

• Unofficial tool - FCommand is not created by, affiliated with, or endorsed by Fecurity. It only builds a command line.
• FCommand does not modify, patch, or bundle LAUNCHER.exe - you supply your own copy.
• Your license key is stored in launcher_settings.json. That file is Encrypted, but keep it private and do not share it or your settings file.
• Deleting launcher_settings.json resets everything (profiles, SIDs, key, paths) - safe to do, but you lose your saved configuration.
• Windows only. Windows 10 / 11 x64. There is no macOS or Linux build.

File Information