Everything you need to know about using Belatstrap — from first launch to every feature in the app.
Right-click Belatstrap.exe → Run as administrator. Admin rights are required for memory injection and for the GUID/MAC spoofers to work.
Choose one of the 12 supported languages. Your choice is remembered — next launch skips straight to the installer check.
Belatstrap checks your Roblox version against the one its offsets were dumped for. If your client is outdated it downloads and installs the matching version automatically. If the download fails, hit Retry Download.
Official OAuth — no password involved. One sign-in keeps you verified for 5 hours.
In the Injector tab: Load Config (or build your own FFlags) → press INJECT with Roblox running. Flags are written directly into Roblox's memory.
Use the Bundle tab presets (Desync, No Texture, Skip MIP, TSB, ESP) for one-click tweak combos.
The installer screen lets you pick from 12 languages: English, Spanish, French, German, Portuguese, Russian, Chinese, Japanese, Filipino, Vietnamese, Arabic and Indonesian. The whole UI — installer, main menu, dialogs — switches language. Your pick is saved, so on the next launch the selection screen is skipped and Belatstrap jumps straight to checking your Roblox version.
Belatstrap works against a specific Roblox build (its offsets are dumped for that version). On every launch it compares your installed Roblox against the latest supported version:
If Roblox is currently running, Belatstrap tells you on screen — close it first so the installer can replace the client files.
Belatstrap uses Discord's official OAuth to verify that you're a real Discord user. The login happens in Belatstrap's own browser window:
After Discord verification, a short "PREPARING YOUR ENVIRONMENT" loading screen runs for a few seconds while Belatstrap prepares your session, then the main window opens (1000 × 600, centered on your monitor). This is normal — just wait a moment.
The main window has a dark sidebar on the left with six tabs: Injector, Settings, Others, Bundle, Performance and Terminal. The top bar shows the Belatstrap logo, a Status line (e.g. "Status: Idle" or "Applying" while flags are being written) and a close (X) button — closing asks for confirmation.
If Roblox launches while the app is open, a small toast appears in the corner: "Roblox is currently running." — useful to know when to restart it after config changes.
The heart of Belatstrap. It shows the detected Roblox PID, the currently loaded config, and an INJECT button that becomes INJECTED once the flags are written into Roblox's memory process.
The YOUR FLAGS panel lists everything in your current config with a live search box ("Found N flags matching …"). Each flag can be:
Clear Log wipes the injector console output below the list.
For some changes to take effect you must restart Roblox — Belatstrap shows a "Restart Roblox" button right in the settings when that's the case.
Browse Font → pick a .ttf/.otf → Apply & Lock to keep it, Restore Default to go back, or Apply & Restart to apply it with a fresh start.
Same idea as the font changer: Browse Image → apply and lock your own cursor, restore the default, or apply and restart.
Presets are one-click FFLAG setups (performance, FPS boost, graphics, stability). Graphics Quality offers LOW / MID / HIGH profiles with an Apply & Restart button.
The Control section manages your machine's System GUID:
If you see "✗ Cannot read System GUID" you are not running as Administrator — close Belatstrap and relaunch it as admin.
Ready-made bundles that apply a set of flags in one click. Each one shows "⏳ Applying flags…" while working. The tab warns you if Roblox isn't running ("⚠ Roblox not running!") or if you haven't injected yet ("⚠ Inject first!").
A live Performance Monitor showing your system state, including GPU usage — handy for confirming your FPS/performance tweaks are actually helping.
A terminal-style page inside the app. Use it for command-style interaction and diagnostics.
Build and manage your flag list from the app's 12,071-offset database:
The offset database is re-dumped after every Roblox update — keep your client updated for full compatibility.
Belatstrap writes flags into Roblox's memory — that's exactly what malware does too, so some antivirus engines flag it. It's a false positive. Add Belatstrap to your antivirus exclusions, and only download from the official source. You can verify the build hash via the note page.