# Core Downloader says 0%?
**URL:** https://community.muos.dev/t/core-downloader-says-0/1672
**Category:** 2601 Jacaranda
**Tags:** retroarch, system
**Created:** [September 13, 2026, 12:49pm UTC](https://community.muos.dev/t/core-downloader-says-0/1672 "2026-09-13T12:49:43Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@gingerbeardman](https://community.muos.dev/u/gingerbeardman)
#### Post date: [September 13, 2026, 12:49pm UTC](https://community.muos.dev/t/core-downloader-says-0/1672/1 "2026-09-13T12:49:43Z")
Having an issue downloading Atari ST core.
I click on Core Downloader and it says 0% and flips back to menu?
Also, I upgraded from 2601.0 to 2601.1 but my system still shows 2601.0 (bc38efa0)?
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### Author:  [@gingerbeardman](https://community.muos.dev/u/gingerbeardman)
#### Post date: [September 13, 2026, 7:39pm UTC](https://community.muos.dev/t/core-downloader-says-0/1672/2 "2026-09-13T19:39:12Z")
Issue is that github is declining to serve the files for some reason.
Themes works fine.
Portmaster works fine.
Cores error.
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### Author:  [@bgelmini](https://community.muos.dev/u/bgelmini)
#### Post date: [September 14, 2026, 12:18am UTC](https://community.muos.dev/t/core-downloader-says-0/1672/3 "2026-09-14T00:18:30Z")
For the moment, users with issues with the core downloader will have to manually download them from this exact link: [Release Release - 2026-05-04 01:37:09 · MustardOS/extra · GitHub](https://github.com/MustardOS/extra/releases/tag/release-20260504-013709)
Download the `.muxzip` file for what you want to install, move that file to the `ARCHIVE` folder on either sd1 or sd2, and inside MustardOS go to `Applications>Archive Manager`, select the core file and install with `A`.
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### Author:  [@system](https://community.muos.dev/u/system)
#### Post date: [September 14, 2026, 1:52am UTC](https://community.muos.dev/t/core-downloader-says-0/1672/4 "2026-09-14T01:52:45Z")
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