USB diagnostics
v3.1 · 8.6 MB · code 20
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File information
UpdatedMar 19, 2025
PublishedMar 19, 2025
Packagecom.devapp.usbhostmanager
Versionv3.1 (20)
Size8.6 MB
MD54c9cea3acb035f067874add0a4efa4c0
Min SDK21
Malware scanTRUSTED
Signature SHA1F5:DE:BC:B9:89:22:10:08:3B:20:B4:3C:DB:96:1C:46:65:84:FA:17
SignerCN=Developer Appliance, O=devappliance
Total downloads28,723
This version28,723
DeveloperDevAppliance
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2025-03-19
- Signature SHA1 F5:DE:BC:B9:89:22:10:08:3B:20:B4:3C:DB:96:1C:46:65:84:FA:17
- File MD5 4c9cea3acb035f067874add0a4efa4c0
How to install USB diagnostics v3.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 8.6 MB of free storage.
- Grab com.devapp.usbhostmanager_20.apk — hit the Download button above (8.6 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 4c9cea3acb035f06…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.devapp.usbhostmanager_20.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 CN=Developer Appliance, O=devappliance. 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 USB diagnostics — tap Open on the install screen, or find the USB diagnostics icon in your app drawer.
Common install errors for USB diagnostics
- "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 5.0 Lollipop 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.