We're scheduling a maintenance window to apply Intel TEE firmware updates to one of our production nodes.

Window: April 1, 2026 | 02:00–08:00 UTC
What's changing: Intel TDX/SGX microcode upgrade + TCB refresh

Why it matters:
- Attestation: Verifiers enforce strict TCB level checks. An outdated TCB causes quotes to fail UpToDate status, which triggers consensus check failures and temporary node restrictions.
- Security: Patches for recent Intel side-channel vulnerabilities.
- Stability: Low-level fixes for TDX resource reclamation and lifecycle management.

Impact:
- The affected node will restart to load new microcode. Expect up to 3 hours of downtime for your running instances.
- TEE environments reinitialize automatically on boot. After the window, verify your instance status and quote generation.

Please adjust your workload scheduling accordingly. If you hit initialization issues or quote failures post-update, reach out through the standard support channels.

— Phala Network Operations