Disaster Message Board
v4.12.0 · 1.5 MB · code 21004120
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File information
UpdatedApr 18, 2025
PublishedJun 12, 2023
Packagejp.softbank.mb.dmb
Versionv4.12.0 (21004120)
Size1.5 MB
MD55937bb08195f1eb4de224f86a401f88b
Min SDK21
Malware scanTRUSTED
Signature SHA13E:CC:0A:23:5E:6F:0D:2F:C1:D6:52:AF:38:7F:FC:5F:86:9E:7D:C5
SignerOU=MOBILE, O=SOFTBANK, C=JP
Total downloads10,000,000
This version10,000,000
Developerソフトバンクモバイル株式会社
Age ratingEveryone
What's new in v4.12.0
2025/4/11 ・Android 15 support
Security scan
TRUSTED
- Developer signature verified 2025-04-18
- Signature SHA1 3E:CC:0A:23:5E:6F:0D:2F:C1:D6:52:AF:38:7F:FC:5F:86:9E:7D:C5
- File MD5 5937bb08195f1eb4de224f86a401f88b
How to install Disaster Message Board v4.12.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 1.5 MB of free storage.
- Grab jp.softbank.mb.dmb_21004120.apk — hit the Download button above (1.5 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 5937bb08195f1eb4…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find jp.softbank.mb.dmb_21004120.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=MOBILE, O=SOFTBANK, C=JP. 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 Disaster Message Board — tap Open on the install screen, or find the Disaster Message Board icon in your app drawer.
Common install errors for Disaster Message Board
- "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.