Before rollback
Export or screenshot pool settings, network configuration, tuning profile and firmware version. If the miner is remote, confirm you have physical access or remote hands before rebooting.
Recovery guide
VNISH rollback and recovery workflow
Rollback content is important for trust. Miners are expensive, and operators want to know how they can return to stock, recover a failed boot or prepare for warranty before installing custom firmware.
One-click rollbackBitmain recoveryBackup checklistWarranty planning
| Scenario | Best recovery path | Notes |
|---|---|---|
| VNISH runs normally | Use VNISH web UI rollback where supported | Save pools and worker settings first |
| Miner does not boot | Use model-specific Bitmain SD recovery | Requires correct board/model image |
| Wrong package flashed | Stop bulk rollout and recover pilot miner | Do not repeat on the rest of the rack |
| Warranty return | Restore stock firmware and default settings | Document serials and original configuration |
When recovery SD is needed
Use recovery SD if the web UI is unreachable, the miner fails to boot or the stock firmware date needs to be reset before a clean install.
Post-recovery checks
After stock recovery, confirm all boards are visible, fans respond, temps are normal and the miner can mine stably before attempting VNISH again.
Frequently asked questions
Can every VNISH install rollback in one click?+
Only supported models and healthy installs can use one-click rollback. Failed boots need SD recovery.
Does rollback restore warranty automatically?+
No. Warranty depends on seller/manufacturer policy. Restoring stock firmware is only one part of the process.
Should I keep recovery images available?+
Yes. Keep the correct Bitmain recovery image for each model family you operate.
Related VNISH guides
Continue through the model, install and recovery pages before flashing production miners.