# New Release: Ultralytics v8.4.161

**URL:** <https://community.ultralytics.com/t/new-release-ultralytics-v8-4-161/2239>\
**Category:** Discussion\
**Tags:** announcements, ultralytics-official, releases\
**Created:** [September 24, 2026, 1:09pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-4-161/2239 "2026-09-24T13:09:16Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\
**Post date:** [September 24, 2026, 1:09pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-4-161/2239/1 "2026-09-24T13:09:16Z")

</div>

# 🚀 Ultralytics v8.4.161 is here

**Ultralytics YOLO v8.4.161** focuses on reliability: smoother training resumes, more resilient prediction and plotting, better dataset handling, and clearer export and Ultralytics Platform guidance. See the [v8.4.161 release](https://github.com/ultralytics/ultralytics/releases/tag/v8.4.161) for the release details.

## 🛠 Bug fixes

- **Six fixes in one update:** RT-DETR tensors move correctly between devices; older Adam/AdamW checkpoints retain their runtime fused setting on resume; empty image files no longer crash prediction; results load from paths containing brackets; plots handle odd numbers of panels; and Platform uploads can use `last.pt` when `save=False` leaves no `best.pt`. See [PR #26301](https://github.com/ultralytics/ultralytics/pull/26301) by [@glenn-jocher](https://github.com/glenn-jocher).
- **CoreML export errors are easier to diagnose:** removing an invalid `.mlmodel` fallback prevents it from obscuring the original save error. See [PR #26298](https://github.com/ultralytics/ultralytics/pull/26298) by [@amanharshx](https://github.com/amanharshx).

## ⚡ Dataset and training improvements

- `.tgz` dataset archives now extract correctly in [PR #26294](https://github.com/ultralytics/ultralytics/pull/26294) by [@aswanth-07](https://github.com/aswanth-07).
- Semantic datasets skip polygon resampling when no augmentation needs the polygons, reducing unnecessary processing. See [PR #26295](https://github.com/ultralytics/ultralytics/pull/26295) by [@raimbekovm](https://github.com/raimbekovm).
- CLI fuzz testing now recognizes wrapped missing-dataset-split errors as expected. See [PR #26299](https://github.com/ultralytics/ultralytics/pull/26299) by [@aswanth-07](https://github.com/aswanth-07).

## 📘 Clearer export and Platform guidance

- Export documentation now covers the `device` argument for OpenVINO, Hailo, and Ascend in [PR #26286](https://github.com/ultralytics/ultralytics/pull/26286) by [@raimbekovm](https://github.com/raimbekovm), and explains why static exports can produce different predictions on non-square images in [PR #26285](https://github.com/ultralytics/ultralytics/pull/26285) by [@Vaishnavi220506](https://github.com/Vaishnavi220506).
- Platform documentation has been refreshed across image copying, face blurring, annotation providers, deployment, monitoring, and related API and billing details. See [PR #26297](https://github.com/ultralytics/ultralytics/pull/26297) by [@raimbekovm](https://github.com/raimbekovm).

🎉 Welcome to first-time contributor [@Vaishnavi220506](https://github.com/Vaishnavi220506)! Thanks to every contributor and the YOLO community for helping make this release possible.

**Give v8.4.161 a try** and let us know how it works for your training, inference, and export workflows. For every change, browse the [full changelog](https://github.com/ultralytics/ultralytics/compare/v8.4.160...v8.4.161).