If you own an older Antminer, you have probably hit the wall: you open a Bitmain support ticket and it bounces, because the model is “End of Service.” Bitmain’s EOS notices are scattered legal announcements, and once a model reaches EOS you cannot create a repair ticket at all — not even a paid one. Yet millions of S9- and L3-class machines are still hashing as solo-lottery miners and home heaters. This page aggregates the support status of every major Antminer generation and, more importantly, gives you a path forward when the manufacturer says no.

Support status below reflects Bitmain’s own published warranty terms and End-of-Service notices, credited to Bitmain. We are not Bitmain and we do not speak for them — always confirm the live status of your exact model on Bitmain’s official support site before making a decision. We update this tracker quarterly as Bitmain adds models to the EOS list.

Antminer support status by model

Bitmain’s standard warranty is 12 months on the miner and PSU and 6 months on the control board, counted from the shipment date (fans and spare parts carry no warranty). For machines first shipped before roughly 2023, that window has already closed. “Repair ticket” below is the practical question: will Bitmain accept your machine for repair at all?

EOS — refused: Bitmain will not open a repair ticket for this model, paid or free. Out of warranty: the warranty window has passed; Bitmain may still accept a paid repair where offered. In warranty: standard RMA applies within the window. “Custom available” = third-party/open firmware exists for the generation; DCENT_OS is our own GPL-3.0 firmware, currently in closed beta (S9 image first; S19/S21 planned).

Your EOS playbook: what to do when Bitmain says no

An EOS notice is not a death sentence for the hardware — it is the loss of one repair path. Here are five honest options, roughly in order of how much value the machine still holds.

1. Have it repaired independently

We have run a board-level ASIC repair bench in Laval, Quebec since 2016. EOS status is irrelevant to us — we still diagnose and repair S9, L3, S17 and S19 hashboards, replace failed domains, and recondition power supplies. If Bitmain refused you, start with our ASIC Fault Finder to identify the failure, then request a repair quote.

2. Repair it yourself with our guides and parts

Learning the repair is what keeps machines out of landfills. The ASIC Hashboard Repair Guide and the error-code database walk through how boards fail and get fixed, and we stock the parts and components you will need.

3. Convert it into a home heater

Older, less-efficient machines make superb heaters — you were going to pay to heat the room anyway, so let the hash subsidize it. See why you are paying to freeze and the Bitcoin space-heater guide for quiet-mode and ducting setups.

4. Harvest for parts or resell

If a machine is beyond economical repair, its good hashboards, PSU, fans and control board still have value to other owners running the same generation. A clean, tested unit also has a used-market floor — see refurbished vs new for how we grade and recondition stock, and our current refurbished miners.

5. Recycle responsibly

When nothing else makes sense, recycle the electronics through a certified e-waste channel rather than landfilling them. Keeping a working machine running — as a miner or a heater — is always greener, which is exactly why the four options above come first.

Open firmware keeps abandoned miners alive

Once a machine is out of warranty or EOS, the usual reason to stay on stock firmware — preserving an RMA path — is gone. That is when open and custom firmware becomes a sensible way to extend a machine’s life: better tuning, lower noise, and features the original firmware never had. We build DCENT_OS, our own GPL-3.0 firmware (closed beta, public beta planned for summer 2026), on the shoulders of the open-source mining community that came before us. For the honest landscape of what is actually open, read Open-Source Bitcoin Mining Firmware Options.

Frequently Asked Questions

What does “End of Service” (EOS) mean for my Antminer?

It means Bitmain no longer accepts repair tickets for that model — neither free warranty repair nor paid out-of-warranty repair. Once a model is EOS, you cannot open a ticket at all. The machine still works; you simply lose the manufacturer as a repair path. Independent repair, parts, and open firmware all remain available.

Is the Antminer S9 still supported in 2026?

Not by Bitmain. The S9 family (S9/S9i/S9j) has been End-of-Service for years, so Bitmain will not repair it. The hardware itself is still perfectly usable — millions run as solo-lottery miners and home heaters — and D-Central still repairs S9 hashboards, stocks parts, and can flash open firmware.

What is the difference between “out of warranty” and “EOS”?

Out of warranty means the warranty window — 12 months on the miner and PSU, 6 months on the control board, counted from shipment — has passed, but Bitmain may still accept a paid repair. EOS goes further: Bitmain refuses the model entirely, so no ticket, paid or free, can be opened.

My Antminer is EOS — what can I actually do with it?

You have five honest options: have it repaired independently (we run a board-level bench in Laval), repair it yourself with our guides and parts, convert it into a home heater, harvest it for parts or resell it, or recycle it responsibly. The EOS playbook above walks through each, with the highest-value options first.

Does flashing custom firmware void my Bitmain warranty?

Yes — Bitmain treats third-party firmware, and broken case-screw stickers, as warranty-voiding. If your machine is still in warranty and you might need an RMA, keep stock firmware. If it is already out of warranty or EOS, that risk is gone, and open firmware such as DCENT_OS (closed beta) becomes a sensible way to extend the machine’s life. See does custom firmware void your Bitmain warranty? for the full picture.

Bitmain abandoned your miner. We did not.

Whether your machine is EOS, out of warranty, or just acting up, there is almost always a next step that keeps it earning. Identify the fault with the ASIC Fault Finder, then request a repair quote — or browse reconditioned miners if it is time to upgrade. We are miners and repair techs first, and we have been doing this since 2016.