---
title: "Monero publishes GUI and CLI 0.18.5.4 'Fluorine Fermi' releases"
description: "The Monero project announced the 0.18.5.4 'Fluorine Fermi' release of both its CLI software and its GUI wallet, describing each as a minor release containing bug fixes. According to the project, the CLI release came from 2 contributors across 6 commits with 35 new lines of code, while the GUI…"
language: en
canonical: "https://whycoinmoves.com/en/events/monero-monero-0-18-5-4-d21ea4dd73ad1a"
published: 2026-10-20T21:57:11.000Z
updated: 2026-10-20T21:58:02.000Z
indexable: true
---

# Monero publishes GUI and CLI 0.18.5.4 'Fluorine Fermi' releases

The Monero project announced the 0.18.5.4 'Fluorine Fermi' release of both its CLI software and its GUI wallet, describing each as a minor release containing bug fixes. According to the project, the CLI release came from 2 contributors across 6 commits with 35 new lines of code, while the GUI…

Attributed sources: [Monero 官方新闻](<https://www.getmonero.org/2026/10/16/monero-GUI-0.18.5.4-released.html>)

## Key facts

The Monero project announced the 0.18.5.4 'Fluorine Fermi' release of both its CLI software and its GUI wallet, describing each as a minor release containing bug fixes. According to the project, the CLI release came from 2 contributors across 6 commits with 35 new lines of code, while the GUI release came from 2 contributors across 8 commits with 38 new lines of code. The posts also give SHA256 hashes and a GPG-signed hash list for verifying downloads.
Evidence strength: Official source, 1 publisher group(s) (Monero 官方新闻); this describes source coverage, not truth or causation.
No complete post-detection return window is available yet.
In the preceding 30 days, the 99th percentile of absolute hourly returns was 2.39% (Kraken · USD; cutoff 20/10/2026, 21:57, UTC). This hourly baseline is not directly comparable with a minute move.

## Returns after site detection

| Window | Return | BTC | Difference from BTC | Actual sampled interval (UTC) | Source |
| --- | --- | --- | --- | --- | --- |
| 5 minutes | — | — | — | — | — |
| 1 hour | — | — | — | — | — |
| 24 hours | — | — | — | — | — |

## Historical hourly baseline

| Metric | Value |
| --- | --- |
| Ready | true |
| Coverage | 98.6% (710/720) |
| Median absolute hourly return | 0.41% |
| 99th percentile of absolute hourly returns | 2.39% |
| BTC beta | — |
| Source / cutoff (UTC) | Kraken · USD / 20/10/2026, 21:57 |

## Claims and open questions

- The project said the Monero 0.18.5.4 CLI release is a minor release with bug fixes, produced by 2 people through 6 commits containing 35 new lines of code.
- The project said the Monero GUI 0.18.5.4 release is a minor release with bug fixes, produced by 2 people through 8 commits containing 38 new lines of code.
- The project said download integrity can be checked against SHA256 hashes and a GPG-signed hash list at getmonero.org.
- What specific bugs the 0.18.5.4 releases fix, beyond the project's statement that it is a minor bug-fix release, would be confirmed by the changelog and commits listed on GitHub.
- Whether any wallet or node operators must take action when upgrading to 0.18.5.4 is not addressed in the announcement and would need an official upgrade notice or release notes.

## Source evidence

- [Monero GUI 0.18.5.4 'Fluorine Fermi' released](<https://www.getmonero.org/2026/10/16/monero-GUI-0.18.5.4-released.html>) — Monero 官方新闻; published 16/10/2026, 00:00; received 20/10/2026, 21:57 (UTC).
- [Monero 0.18.5.4 'Fluorine Fermi' released](<https://www.getmonero.org/2026/10/16/monero-0.18.5.4-released.html>) — Monero 官方新闻; published 16/10/2026, 00:00; received 20/10/2026, 21:57 (UTC).


## Recent XMR events and market reactions

No other publication-ready XMR events yet.

- [Full coin archive](<https://whycoinmoves.com/en/coins/monero>)

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- [Project updates](<https://whycoinmoves.com/en/topics/upgrade>)

## Research for this archive

- [Monero XMR and Zcash ZEC: delistings, liquidity and USD vs USDT](<https://whycoinmoves.com/en/research/privacy-coin-delistings-and-quote-currency-isolation.md>)

[Methods and limitations](<https://whycoinmoves.com/en/methodology>)
Publisher count is not independent evidence count. Price changes cannot verify news or prove causation.
