add 2.5.1 release notes

blog/2025/rippled-2.5.1.md

@@ -0,0 +1,62 @@
+---
+category: 2025
+date: "2025-09-08"
+template: '../../@theme/templates/blogpost'
+seo:
+    title: Introducing XRP Ledger version 2.5.1
+    description: rippled version 2.5.1 is now available. This version fixes an issue with stalled consensus rounds.
+labels:
+    - rippled Release Notes
+markdown:
+    editPage:
+        hide: true
+---
+# Introducing XRP Ledger version 2.5.1
+
+Version 2.5.1 of `rippled`, the reference server implementation of the XRP Ledger protocol, is now available. This release fixes an issue with stalled consensus rounds.
+
+
+## Action Required
+
+If you run an XRP Ledger server, upgrade to version 2.5.1 as soon as possible to ensure service continuity.
+
+
+## Install / Upgrade
+**TODO: Upgrade packages**
+On supported platforms, see the [instructions on installing or updating `rippled`](../../docs/infrastructure/installation/index.md).
+
+| Package | SHA-256 |
+|:--------|:--------|
+| [RPM for Red Hat / CentOS (x86-64)](https://repos.ripple.com/repos/rippled-rpm/stable/rippled-2.6.0-1.el9.x86_64.rpm) | `efd0d61ce0906af1862eeb0691717ddc546335294dc2ce8db1d9e243d215846c` |
+| [DEB for Ubuntu / Debian (x86-64)](https://repos.ripple.com/repos/rippled-deb/pool/stable/rippled_2.6.0-1_amd64.deb) | `82570dd0c36d3ce2f79902ae99c44bcfe710d619d806805a5af9d8f56b7dbea1` |
+
+For other platforms, please [build from source](https://github.com/XRPLF/rippled/blob/master/BUILD.md). The most recent commit in the git log should be the change setting the version:
+
+```text
+commit 16c2ff97ccc5e78fe450bd92c431322de75aa94e
+Author: Ed Hennis <ed@ripple.com>
+Date:   Wed Sep 3 10:19:38 2025 -0400
+
+    Set version to 2.5.1
+```
+
+
+## Full Changelog
+
+### Bug Fixes
+
+- Fixed stalled consensus detection to prevent false positives in situations where there were no disputed transactions. ([#5658](https://github.com/XRPLF/rippled/pull/5658))
+
+
+## Credits
+
+The following GitHub users contributed to this release:
+
+- @ximinez
+
+
+## Bug Bounties and Responsible Disclosures
+
+We welcome reviews of the `rippled` code and urge researchers to responsibly disclose any issues they may find.
+
+To report a bug, please send a detailed report to: <bugs@xrpl.org>

blog/2025/rippled-2.6.0.md

@@ -13,7 +13,7 @@ markdown:
 ---
 # Introducing XRP Ledger version 2.6.0
 {% admonition type="danger" name="Warning" %}
-The team is tracking two active issues in rippled 2.6.0—memory usage increases and Boost library upgrade problems. It is recommend that the UNL community roll back to version 2.5.0. A hotfix is in development and will be shared when it becomes available.
+The team is tracking two active issues in rippled 2.6.0—memory usage increases and Boost library upgrade problems. It is recommend that the UNL community roll back to [version 2.5.1](./rippled-2.5.1.md). A hotfix is in development and will be shared when it becomes available.
 {% /admonition %}
 
 Version 2.6.0 of `rippled`, the reference server implementation of the XRP Ledger protocol, is now available. This release adds new features and bug fixes.

blog/sidebars.yaml

@@ -10,6 +10,7 @@
     - group: '2025'
       expanded: false
       items:
+        - page: 2025/rippled-2.5.1.md
         - page: 2025/rippled-2.6.0.md
         - page: 2025/coinpayments-xrpl-case-study-payment-processing.md
         - page: 2025/clio-2.5.0.md