How to Reinstall Scarlet iOS Without Losing Data

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Whether Scarlet iOS is crashing, showing a white screen, or simply not working after an iOS update, reinstalling it is often the fastest path to a fix. The main concern most users have is losing their sideloaded apps or the data stored inside them. This guide explains exactly what happens to your installed apps when you reinstall Scarlet iOS, how to protect any data you care about, and how to do the reinstall cleanly so you end up in a better state than before.

What Happens to Your Sideloaded Apps When You Reinstall Scarlet iOS

Before anything else, let us clear up the most common misconception: deleting and reinstalling Scarlet iOS does not delete your sideloaded apps.

Scarlet iOS is an installer, not a container. When it installs an app on your device, that app becomes an independent entity on your home screen — just like an App Store app. Scarlet iOS hands off the app to iOS, and from that point on, iOS manages it. Removing Scarlet iOS removes the installer, not the installed apps.

What this means practically:

  • All apps installed via Scarlet iOS remain on your home screen after you delete Scarlet iOS
  • App data stored inside those apps (game saves, login sessions, settings) is preserved
  • The apps will continue to work as long as their certificates remain valid
  • You only need to reinstall apps if their certificates expire or get revoked

What You Might Lose: The One Exception

The only data at risk is anything stored within Scarlet iOS itself rather than in the installed apps. This includes:

  • Custom repositories you have added to Scarlet iOS
  • App download history within Scarlet iOS
  • Any saved login credentials entered directly into Scarlet iOS (not the apps it installs)
  • Queued or in-progress downloads

If you have added custom repos, write them down before reinstalling. Repository URLs are simple text strings and you can re-add them in under a minute after reinstalling.

Before You Reinstall: Preparation Checklist

1. Document Your Custom Repositories

Open Scarlet iOS and navigate to the repository or sources section. Write down or screenshot the URL of every custom repo you have added. The default Scarlet iOS repositories will be restored automatically after reinstalling, but any custom ones you added manually will need to be re-entered.

2. Note Which Apps You Installed Through Scarlet iOS

Walk through your home screen and note which apps came from Scarlet iOS. While they will not be deleted, knowing this list helps you quickly verify everything is still working after the reinstall and lets you efficiently reinstall any that need certificate renewal.

3. Check Certificate Expiry Dates

Go to Settings > General > VPN & Device Management. Check the expiry dates on the certificates associated with your sideloaded apps. If any certificates are close to expiring, plan to reinstall those apps through fresh Scarlet iOS after the reinstall anyway. This saves you a second round of troubleshooting.

4. Back Up App Data (If the App Supports It)

For any sideloaded app that contains important data — game saves, notes, custom configurations — check whether that app has a built-in backup or export feature. Use it before proceeding. iCloud backup also captures data from most apps, including sideloaded ones, though coverage varies by app.

Step-by-Step Reinstall Process

Step 1: Delete Scarlet iOS

On your home screen, long-press the Scarlet iOS icon until the edit options appear. Tap Remove App, then tap Delete App to confirm. Scarlet iOS is now removed. Your sideloaded apps are still on your home screen and unaffected.

Step 2: Clear Safari Cache (Optional but Recommended)

A stale Safari cache can sometimes interfere with the installation process. To clear it: go to Settings > Safari > Clear History and Website Data. This does not affect passwords saved in iCloud Keychain.

Step 3: Restart Your iPhone

Hold the side button and a volume button simultaneously until the power slider appears. Slide to power off. Wait 30 seconds. Power back on. Starting the reinstall from a freshly rebooted device reduces the chance of a failed installation due to cached network errors or stale process states.

Step 4: Open Safari and Visit the Official Site

Open Safari (not Chrome, Firefox, or any other browser — Safari is required for app installation on iOS). Navigate to scarletios.com. Do not use any third-party links or search results that may point to unofficial mirrors.

Step 5: Tap the Install Button

On the Scarlet iOS homepage, tap the Direct Install button. Safari will prompt you to confirm whether you want to allow the website to install the configuration profile or app. Tap Allow.

Step 6: Install the Profile (If Prompted)

If prompted to install a profile, go to Settings > General > VPN & Device Management and tap the profile to install it. Return to Safari if the installation does not proceed automatically.

Step 7: Trust the Certificate

Once Scarlet iOS installs on your home screen, go to Settings > General > VPN & Device Management. Under Developer App or Enterprise App, find the certificate associated with Scarlet iOS. Tap it, then tap Trust “[Name]” and confirm.

Step 8: Open Scarlet iOS

Return to your home screen and open Scarlet iOS. It should load normally. If you had custom repositories, re-add them now through the app’s repository or sources menu.

After Reinstalling: Verifying Your Sideloaded Apps

Open each of your sideloaded apps and verify they launch correctly. In most cases they will open without any issues. If an app shows the “Untrusted Developer” error, go to Settings > General > VPN & Device Management and trust the relevant certificate. If an app crashes immediately on launch, its certificate may have expired during the time Scarlet iOS was uninstalled — reinstall it fresh through Scarlet iOS.

For a full walkthrough of the trust process, see our guide on Fix Untrusted Developer Error on iPhone: Step by Step.

When Reinstalling Scarlet iOS Is the Right Move

Reinstalling Scarlet iOS is the correct solution when:

  • Scarlet iOS shows a white screen and other fixes have failed
  • Scarlet iOS crashes immediately on launch
  • A certificate error prevents Scarlet iOS itself from being trusted
  • An iOS update broke Scarlet iOS’s functionality
  • You need a fresh certificate for a new batch of app installations

Reinstalling Scarlet iOS is not necessary when:

  • Individual sideloaded apps are crashing — reinstall those apps specifically instead
  • You just need to trust a certificate — do that in Settings without touching Scarlet iOS
  • Scarlet iOS is slow — a restart usually resolves this

If your sideloaded apps are crashing specifically after an iOS 18 update, see our focused guide on How to Fix Sideloaded Apps Crashing on iOS 18 for targeted solutions.

Keeping Scarlet iOS Healthy Long-Term

  • Reinstall Scarlet iOS whenever a new major iOS version is released to ensure you have the most current signing certificates
  • Do not install Scarlet iOS from any source other than the official scarletios.com website
  • Keep at least 2 GB of free storage on your device to avoid installation failures
  • Re-trust certificates immediately after any iOS update rather than waiting until apps stop working

Reinstalling Scarlet iOS is a quick, low-risk operation when you know that your sideloaded apps are safe. It takes under five minutes from deletion to a fully working reinstall, and in most cases it resolves persistent problems that simpler fixes cannot. Head to Scarlet iOS to get the latest version and get back to installing your favorite apps on iPhone and iPad.

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