ACR 1251 USB NFC Reader Utils
v1.0.1 · 259.3 KB · code 4
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File information
UpdatedSep 27, 2019
PublishedSep 27, 2019
Packagecom.skjolberg.acr1251u
Versionv1.0.1 (4)
Size259.3 KB
MD5373cb7f86f9b84d996f5ea2bfc9cca57
Min SDK14
Malware scanTRUSTED
Signature SHA17B:AF:22:25:38:49:40:AF:29:94:A6:24:44:18:EA:D3:68:23:AE:95
SignerCN=Thomas Skjolberg, OU=-, O=-, L=-, ST=-, C=NO
Total downloads1,000
This version1,000
DeveloperThomas Rorvik Skjolberg
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2019-09-27
- Scanned for malware 2020-10-25 13:53:26
- Signature SHA1 7B:AF:22:25:38:49:40:AF:29:94:A6:24:44:18:EA:D3:68:23:AE:95
- File MD5 373cb7f86f9b84d996f5ea2bfc9cca57
How to install ACR 1251 USB NFC Reader Utils v1.0.1 on Android API 14+
Takes about 2 minutes. You'll need roughly 259.3 KB of free storage.
- Grab com.skjolberg.acr1251u_4.apk — hit the Download button above (259.3 KB). 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 373cb7f86f9b84d9…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.skjolberg.acr1251u_4.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=Thomas Skjolberg, OU=-, O=-, L=-, ST=-, C=NO. 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 ACR 1251 USB NFC Reader Utils — tap Open on the install screen, or find the ACR 1251 USB NFC Reader Utils icon in your app drawer.
Common install errors for ACR 1251 USB NFC Reader Utils
- "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 API 14 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.