Z21 Updater

Keep your Z21, z21, z21start and smartRail always up to date.

Modelleisenbahn München GmbH · com.z21.z21fwupdate

Not rated yet 10K+ downloads v2.0.0 27.1 MB Android 4.4+ PEGI 3 · Everyone

Download APK 27.1 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.0.0 (213)
Updated: Nov 18, 2025 (11 months ago)
APK size: 27.1 MB
Requires: Android 4.4+ (API 19)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Entertainment (app)
Listed since: Apr 24, 2022 (at least)
Permissions: 8 (1 sensitive)
Website: z21.eu
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Z21 Updater is an app by Modelleisenbahn München GmbH in the Entertainment category, listed since at least April 2022. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

It asks for 8 permissions, 1 of them sensitive: modify shared storage.

What's new in v2.0.0

The Z21 Updater app has been completely redesigned in version 2.0

Description

From the listing uploaded by “appupdater”.

This app allows you to conveniently keep your Z21, z21, z21start and smartRail always up to date. The connected device is automatically recognized by the app. New updates are directly queried from the server when connected to the Internet thus the update process is very simple and functional.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 18, 2025.
Certificate issued to “Modelleisenbahn GmbH” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Nov 18, 2025
Validated against Google Play Nov 18, 2025
Signed byO=Modelleisenbahn GmbH
Signing certificate (SHA-1)6F:72:2F:79:32:5D:19:AC:CF:9C:CA:B9:49:47:A0:FC:1B:40:5F:A8
File MD55cc466151063f8d64f4c99ff3d32ea46
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (8)

Z21 Updater requests 8 permissions, 1 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
Google Play license check com.android.vending.CHECK_LICENSE
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Use fingerprint hardware android.permission.USE_FINGERPRINT
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Wi-Fi android.hardware.wifi

Z21 Updater APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Z21 Updater APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 5cc466151063f8d64f4c99ff3d32ea46.