AxeOS Firmware Tracker: Latest Stable ESP-Miner Release
The current stable AxeOS/ESP-Miner release, what changed, and a source-linked checklist for deciding whether to update your Bitaxe.
AxeOS is the browser interface supplied with ESP-Miner, the open-source firmware used by Bitaxe and several compatible miners. Release details below come from the project’s official GitHub releases, not from an estimated roadmap.
Freshness check: this page was verified on 1 August 2026. Firmware moves quickly; confirm the releases page before downloading or flashing anything.
Latest stable: v2.14.2
ESP-Miner v2.14.2 was published on 8 July 2026. It is a small maintenance release with two listed changes:
- a fix for a use-after-free race condition; and
- a fix that makes frequency adjustment fall back to the default during self-test.
The project labels v2.14.2 as a normal release, not a prerelease. That makes it the current stable version as at our verification date.
Should you update?
Reasonable for most supported boards, after the usual checks. v2.14.2 is a narrow bug-fix release rather than a feature migration. Before updating:
- Record your current version, board/model number, pool settings and tuning values.
- Confirm that the release provides an asset for your exact board when using a factory image.
- Download only from the official release page.
- Keep the miner on stable power and do not interrupt a flash.
- After reboot, confirm the version, pool connection, temperature, power and accepted-share counters.
If your miner is stable and you are unsure which board image applies, stop and ask the manufacturer or seller rather than guessing.
What changed in the v2.14 series
v2.14.1 — 19 June 2026
v2.14.1 added board version 603 support and a configurable self-test warm-up temperature. It also fixed swarm-device editing and a buffer overflow in rejected-share statistics.
v2.14.0 — 4 June 2026
v2.14.0 was the large feature release. Its official changelog includes:
- a customisable and more responsive AxeOS dashboard;
- log downloads that survive soft reboots;
- visible firmware-update progress;
- pause/resume mining and fan-controller tuning;
- WebSocket API support;
- Stratum V2 protocol support and per-share response-time measurement;
- fixes for hashrate spikes, reconnect counter overflow, small Stratum memory leaks and power-reading races; and
- an update to ESP-IDF 5.5.3.
The v2.14.0 notes are extensive. Read the full official changelog if any of those areas affect your setup.
Important correction to the original tracker
An earlier version of this article described a supposed v2.7.4 release and features attributed to it. The official repository has no v2.7.4 release or tag. Those details have been removed rather than carried forward. The official v2.7 series ends at v2.7.2.
Updating without creating a recovery job
In-place update
Official releases currently include esp-miner.bin and www.bin for in-place updates, alongside board-specific factory images. Use the update path documented by the project or exposed by your current AxeOS installation; do not substitute a factory image for a normal update unless the official instructions call for it.
Factory or recovery image
Factory assets are named for particular board versions, for example esp-miner-factory-601-...bin. The number matters. Verify the hardware/board version before selecting one and use the project’s documented flashing tool and offsets.
We intentionally do not publish generic esptool offsets here: recovery layouts can change, and a copied command for the wrong board is more dangerous than helpful.
Before and after checklist
Before
- Export or record pool, Wi-Fi and tuning settings.
- Photograph the board/model identifier if it is not already documented.
- Read the release notes for the target version and the version immediately before it.
- Keep a copy of the known-working release you are replacing.
After
- Confirm the displayed firmware version.
- Confirm the intended pool and worker are connected.
- Watch temperatures, power and share acceptance for at least 30 minutes.
- If you had custom frequency or voltage settings, reintroduce them only after a stable stock run.
Primary source: the bitaxeorg/ESP-Miner releases page. Last manually verified 1 August 2026.
Frequently Asked Questions
What is the latest stable ESP-Miner release?
As checked on 1 August 2026, the latest non-prerelease release is v2.14.2, published on 8 July 2026. Always confirm the releases page before updating.
Should I install every new release immediately?
No. Read the release notes, confirm support for your exact board version, and wait if your miner is stable and the release does not fix a problem you have.
Which file should I download?
For an in-place web update, use the files and instructions shown for your installed version. Factory images are board-specific: do not guess the board number or flash a factory image intended for another model.