Safe L9 install
Treat L9 like newer S21-era hardware: do not rush direct NAND flashing if the stock firmware date or board type is uncertain.
Antminer L9 guide
VNISH firmware for Antminer L9
L9 is a newer high-output Scrypt miner, so the safest VNISH workflow is compatibility first, performance second. Confirm the board type, stock firmware date and recovery path before writing NAND.
L9 ScryptAML / CVSD / NANDNewer hardware
| Check | L9 action | Why |
|---|---|---|
| Board type | Confirm AML or CV | Package selection depends on board family |
| Stock date | Record stock firmware date | Newer Bitmain builds may need a recovery step |
| Autotune | Run conservative first tune | Protects against thermal runaway and high reject rate |
| Rollback | Keep recovery path ready | Useful for warranty or failed install recovery |
Performance expectations
Chase stable efficiency first. High GH/s numbers are less useful if the unit produces errors, rejects or thermal throttling.
Operational checklist
After install, verify pool failover, watchdog behavior, web UI access and whether each hashboard reports similar chip health.
Frequently asked questions
Is L9 supported the same way as L7?+
No. Both are Scrypt miners, but L9 uses newer hardware and board assumptions.
Should I use SD first on L9?+
Use SD/recovery when the firmware history is unknown. Use NAND after compatibility is clear.
What is the biggest L9 risk?+
Wrong package selection or ignoring the stock firmware date before flashing.
Related VNISH guides
Continue through the model, install and recovery pages before flashing production miners.