ICQ2 LINUX RELEASE:GUI research alpha 0.2.23aNOVEMBER 2, 2026
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RELEASE NOTES

ICQ² 0.2.23a GUI for Linux

A small update to the public desktop alpha: account-entry accents now use the approved pastel yellow, the app uses its ICQ² wordmark, and text stays readable with light and dark desktop palettes. Existing form geometry is retained.

Install from one file

  1. Download the DEB below and open it in your software installer.
  2. Click Install, then open the client from the application menu.

The bootstrap verifies the production-signed release. Accounts, local history, preferences and autostart choices are preserved. GUI and terminal installations remain separate.

Download ICQ² GUI 0.2.23a (.deb)

Automatic signed updates

The existing production Ed25519 key is unchanged. Each client keeps its own signed friends channel, stages verified updates for a safe restart and retains the previous working version for rollback.

icq2-gui-update --status
icq2-gui-update --check
icq2-gui-update --rollback

Real signed-package upgrade, rollback, state preservation and fresh DEB bootstrap were checked. Automated connected-account tests were intentionally skipped; this is not a new claim of live-account testing.

Advanced manual install

Download the archive, its signature, the public key and install.sh into one directory. Verify the detached signature before installation.

chmod +x install.sh
./install.sh \
  --archive icq2-gui-0.2.23a-linux-x86_64.tar.gz \
  --signature icq2-gui-0.2.23a-linux-x86_64.tar.gz.sig \
  --public-key icq2-linux-gui-update-public-key.pem \
  --manifest-url https://icq2.net/releases/linux/gui-x86_64/friends.manifest

Installer script · Archive · Archive signature · Public key

Verify the download

  • DEB: 1,804,350 bytes; SHA-256: 1a0f7505be5cd4ed2f187fe83f0d77bc208fba502cb5d491c6d8f485276dc7ac
  • Archive: 1,806,949 bytes; SHA-256: c65cc65912f2af8225718b1641d33427132bc2fded6aa239815cf04250f99b74
  • Production key fingerprint (DER SHA-256): c423c34816e445ce74e92d845bd0f8919cfae4f9d3ba3fee308217e29a9f2c4b

Signed checksums · Checksum signature · SBOM · SBOM signature · DEB signature · Detailed installation notes

Recorded source commit: be859f3454d316f70254c28b423dfd8489a5140d. The package does not embed a Git-SHA attestation.

Research-alpha limits

File transfer, contact-card transfer, group chat, calls and end-to-end encryption are not included. Transport is encrypted, but the service can process message contents. ICQ² is an independent project and is not affiliated with Mirabilis, AOL, VK, or the former ICQ service.