STI Tx Guide
v3.1.0 · 10.5 MB · code 42
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File information
UpdatedDec 9, 2025
PublishedNov 1, 2022
Packagegov.cdc.stdtxguide
Versionv3.1.0 (42)
Size10.5 MB
MD5fca162cd534c8fbfe3ea8ea5bf18251f
Min SDK24
Malware scanTRUSTED
Signature SHA1CC:71:BF:D8:F7:F6:E1:56:06:CF:45:17:FB:69:E2:70:9F:CD:A1:0D
SignerOU=OADC, O=CDC, L=Atlanta, ST=GA, C=US
Total downloads100,000
This version100,000
DeveloperCenters for Disease Control and Prevention
Age ratingEveryone
What's new in v3.1.0
- Supported for latest devices
- Improved performance and stability
- Added official US Government banner
- Improved performance and stability
- Added official US Government banner
Security scan
TRUSTED
- Developer signature verified 2025-12-09
- Signature SHA1 CC:71:BF:D8:F7:F6:E1:56:06:CF:45:17:FB:69:E2:70:9F:CD:A1:0D
- File MD5 fca162cd534c8fbfe3ea8ea5bf18251f
How to install STI Tx Guide v3.1.0 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 10.5 MB of free storage.
- Grab gov.cdc.stdtxguide_42.apk — hit the Download button above (10.5 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches fca162cd534c8fbf…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find gov.cdc.stdtxguide_42.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read OU=OADC, O=CDC, L=Atlanta, ST=GA, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open STI Tx Guide — tap Open on the install screen, or find the STI Tx Guide icon in your app drawer.
Common install errors for STI Tx Guide
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 7.0 Nougat or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.