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Identify the current firmware and its date first. If you cannot confirm them, contact support before flashing

Stock dated August 2026 or later is outside this standard installation route. Stop and contact support with the exact model, board and stock version. Do not upgrade or downgrade stock at random

SSH / authentication error: stop, check local network access and the miner password configured in Toolkit. Keep the exact error log for support. An SSH error alone is not a reason to install newer stock

On supported CVITEK / CV builds of VNISH 1.3.6, the firmware starts automatically after a restart.

Earlier versions: Supported CVITEK / CV builds of VNISH 1.3.6 start automatically after restart. Earlier CV versions may require Toolkit → Restore firmware to relaunch VNISH; this is not factory-stock recovery.

SD/USB recovery is a separate board-specific procedure. On AML with stock from September 2025 or later, USB unlocking may be needed for that recovery route, not as a blanket prerequisite for Toolkit installation

Third-party firmware can affect the manufacturer's warranty. Do not bypass security warnings, interrupt writing or use a file for a similar model