StartOS v0.4.0
v0.4.0 is a complete rewrite of StartOS. After six years of building, we believe we have arrived at the correct architecture and foundation to deliver on the promise of sovereign computing.
⚠️ Before You Update

Everyone is welcome to participate in the public beta! However, the only way to update is by following the 0.4.0 Update Guide precisely. This is a sensitive update between two essentially distinct operating systems — skipping steps or improvising can result in data loss.
👉 Read the full update guide before proceeding
If anything goes wrong, stop and contact support — do not attempt to troubleshoot on your own.

Highlights

Redesigned UI — faster, more intuitive, mobile-friendly, with a real-time system metrics dashboard
Completely new networking stack — LAN port forwarding, Wireguard VPN gateways, private and public domains (clearnet), Let's Encrypt, built-in DNS, and Tor as an optional plugin
StartTunnel — free, open-source reverse tunnel to expose services on a public domain without revealing your home IP
LXC container runtime — replacing Docker/Podman with a reliable, nested container architecture supporting hardware acceleration and multi-container setups
Improved backups — differential backups, cross-server restore, and a new FUSE module for cross-platform reliability
Internationalization — multiple languages and keyboard layouts for StartOS and services
TypeScript SDK — build and ship a StartOS package in minutes
New S9PK format — signature verification, partial downloads, and multi-architecture support
SMTP notifications — email alerts from StartOS and services via Gmail, SES, or any SMTP provider

Important
Previous backups are incompatible with v0.4.0. After updating, immediately update all services and create a fresh backup.
What's Changed

hotfix for 0.3.5.1 migrations

Full Changelog: https://github.com/Start9Labs/start-os/compare/v0.4.0-beta.4...v0.4.0-beta.5
ISO Downloads

x86_64/AMD64
x86_64/AMD64 + NVIDIA
x86_64/AMD64-slim (FOSS-only)
aarch64/ARM64
aarch64/ARM64 + NVIDIA
aarch64/ARM64-slim (FOSS-Only)
RISCV64 (RVA23)
RISCV64 (RVA23)-slim (FOSS-only)

StartOS Checksums
SHA-256
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BLAKE-3
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Start-Tunnel Checksums
SHA-256
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BLAKE-3
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start-cli Checksums
SHA-256
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BLAKE-3
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