# FAQ **URL:** https://community.muos.dev/c/faq/7.md [Latest](https://community.muos.dev/latest.md) · [Categories](https://community.muos.dev/categories.md) · [Tags](https://community.muos.dev/tags.md) --- ## [Responsible Use and Project Values](https://community.muos.dev/t/responsible-use-and-project-values/454)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [May 30, 2025, 8:25am UTC](https://community.muos.dev/t/responsible-use-and-project-values/454 "2025-05-30T08:25:03Z")
What is our position on content management tools? muOS is designed to support a wide range of creative and personal projects, but it does not support tools that enable inappropriate use of content. The platform prioriti… --- ## [Pickles vs. RetroArch](https://community.muos.dev/t/pickles-vs-retroarch/1592)
**Author:** [@xonglebongle](https://community.muos.dev/u/xonglebongle)\ **Replies:** 0\ **Last updated:** [July 17, 2026, 1:18pm UTC](https://community.muos.dev/t/pickles-vs-retroarch/1592 "2026-07-17T13:18:02Z")
This is for the 2606.0 ANDROMEDA release only! What is Pickles? Pickles is a purpose built way to run Libretro cores within MustardOS. It uses your current frontend theme, including its colours, fonts, navigation, and… --- ## [Mustard Terminal Application](https://community.muos.dev/t/mustard-terminal-application/1473)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [April 16, 2026, 10:25am UTC](https://community.muos.dev/t/mustard-terminal-application/1473 "2026-04-16T10:25:06Z")
This is for the 2606.0 ANDROMEDA release only! Important Notice If you do not understand what a virtual terminal is or what it can do, you do not need to open or run this application. You will break things in subtle … --- ## [DraStic Advanced RTC settings](https://community.muos.dev/t/drastic-advanced-rtc-settings/1404)
**Author:** [@xikteny](https://community.muos.dev/u/xikteny)\ **Replies:** 0\ **Last updated:** [March 7, 2026, 12:40am UTC](https://community.muos.dev/t/drastic-advanced-rtc-settings/1404 "2026-03-07T00:40:50Z")
There are a few different ways of configuring the RTC (Real Time Clock) of the ‘DraStic Advanced (external)’ core (also referred to as ‘drastic-trngaje’). This RTC is used by certain games—for example: ‘Pokémon HeartGold’… --- ## [Content Colour Settings](https://community.muos.dev/t/content-colour-settings/1286)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [February 6, 2026, 11:46pm UTC](https://community.muos.dev/t/content-colour-settings/1286 "2026-02-06T23:46:47Z")
This is for the 2601.0 JACARANDA release only! Important Notice The below is for reference only and should not be done manually unless specifically required to do so. Everything here can be changed within the confine… --- ## [Content ROM Codes](https://community.muos.dev/t/content-rom-codes/1285)
**Author:** [@xonglebongle](https://community.muos.dev/u/xonglebongle)\ **Replies:** 0\ **Last updated:** [February 6, 2026, 11:33pm UTC](https://community.muos.dev/t/content-rom-codes/1285 "2026-02-06T23:33:34Z")
The following explains the ROM naming codes you may see in game filenames, what they mean, and how to interpret them safely. These codes are not MustardOS specific. They originate from long standing ROM scene convention… --- ## [Overlay System](https://community.muos.dev/t/overlay-system/1284)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [February 6, 2026, 10:54pm UTC](https://community.muos.dev/t/overlay-system/1284 "2026-02-06T22:54:41Z")
This is for the 2601.0 JACARANDA and 2606.0 ANDROMEDA releases only! The overlay system allows PNG images to be layered with different functionality. When content starts, the system searches for overlays in a fixed or… --- ## [Application Runner](https://community.muos.dev/t/application-runner/1282)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [February 6, 2026, 10:08am UTC](https://community.muos.dev/t/application-runner/1282 "2026-02-06T10:08:22Z")
This is for the 2601.0 JACARANDA and 2606.0 ANDROMEDA releases only! The following explains what the mux\_launch.sh application launch script is and how applications should be launched correctly on MustardOS. This appl… --- ## [Using RetroArch Overrides Correctly](https://community.muos.dev/t/using-retroarch-overrides-correctly/1197)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [December 29, 2025, 6:33am UTC](https://community.muos.dev/t/using-retroarch-overrides-correctly/1197 "2025-12-29T06:33:04Z")
The following explains (well at least will try to) what RetroArch overrides are, why our global RetroArch configuration protection exists, and how to make changes safely without breaking things for yourself. If you ar… --- ## [Carousel Grid Mode](https://community.muos.dev/t/carousel-grid-mode/1034)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [October 30, 2025, 11:01pm UTC](https://community.muos.dev/t/carousel-grid-mode/1034 "2025-10-30T23:01:22Z")
New to MustardOS Version 2508.3 Golden Goose is the ability configure a theme to display grid content in a carousel style. What this means is content is displayed in a circular pattern where there is not end to list rat… --- ## [Adding new custom archive path support for muxzip](https://community.muos.dev/t/adding-new-custom-archive-path-support-for-muxzip/1014)
**Author:** [@ImCoKeMaN](https://community.muos.dev/u/ImCoKeMaN)\ **Replies:** 0\ **Last updated:** [October 21, 2025, 1:43am UTC](https://community.muos.dev/t/adding-new-custom-archive-path-support-for-muxzip/1014 "2025-10-21T01:43:04Z")
If you tried to use an old muxzip since Canada Goose came out and it failed, or you think the list of supported top level folders in Manually creating installable archives is insufficient, (and you have a bit of linux un… --- ## [Grid mode for Content](https://community.muos.dev/t/grid-mode-for-content/969)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [October 12, 2025, 5:42pm UTC](https://community.muos.dev/t/grid-mode-for-content/969 "2025-10-12T17:42:27Z")
With the release of Silly Goose we’ve added the ability to enable displaying content in a grid mode. For example: By default this feature is disabled to enable it there are 3 requirements. You will need to be usi… --- ## [Downloading additional cores with Core Downloader](https://community.muos.dev/t/downloading-additional-cores-with-core-downloader/869)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [September 25, 2025, 12:39am UTC](https://community.muos.dev/t/downloading-additional-cores-with-core-downloader/869 "2025-09-25T00:39:44Z")
To download additional cores open Content Explorer and navigate to a folder you want to download a core for Press Select to bring up the Core Assignment screen Select Core Downloader and press A Select the co… --- ## [Assigning a Core to a directory](https://community.muos.dev/t/assigning-a-core-to-a-directory/868)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [September 24, 2025, 11:50pm UTC](https://community.muos.dev/t/assigning-a-core-to-a-directory/868 "2025-09-24T23:50:39Z")
To assign a core to a directory navigate to that directory in Content Explorer With any content selected press select button to bring up the Content Option menu Select Core and press A to continue Select the … --- ## [Converting Collections to new Canada Goose Format](https://community.muos.dev/t/converting-collections-to-new-canada-goose-format/829)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 3:04pm UTC](https://community.muos.dev/t/converting-collections-to-new-canada-goose-format/829 "2025-09-20T15:04:45Z")
In previous releases there was an issue where clearing core assignment would prevent Collection shortcuts from working until you launched the content at least once in content explorer. With the release the Canada Goose … --- ## [Including Grid and Box art images for your Theme in Canada Goose](https://community.muos.dev/t/including-grid-and-box-art-images-for-your-theme-in-canada-goose/825)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 1:17pm UTC](https://community.muos.dev/t/including-grid-and-box-art-images-for-your-theme-in-canada-goose/825 "2025-09-20T13:17:45Z")
New to the Canada Goose release you can include images directly in your theme for Grid Images and Box art images. we support the following paths: /catalogue/Application/box/ /catalogue/Application/grid/ /catalogue/Co… --- ## [Manually creating installable archives](https://community.muos.dev/t/manually-creating-installable-archives/824)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 11:42am UTC](https://community.muos.dev/t/manually-creating-installable-archives/824 "2025-09-20T11:42:45Z")
The Archive Manager now supports shortcut top level folders that maps to the correct extraction locations for you. That means you can create clean, human readable archives like: bios/ overlays/ shaders/ and they’ll be… --- ## [My RetroArch configuration is being repressed](https://community.muos.dev/t/my-retroarch-configuration-is-being-repressed/823)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 9:35am UTC](https://community.muos.dev/t/my-retroarch-configuration-is-being-repressed/823 "2025-09-20T09:35:22Z")
This is working as intended. We have deliberately made the default configuration for RetroArch stay as-is. Due to the amount of issues in the past relating to people changing goodness knows what in their global config… --- ## [Help my backups aren't working](https://community.muos.dev/t/help-my-backups-arent-working/816)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 2:17am UTC](https://community.muos.dev/t/help-my-backups-arent-working/816 "2025-09-20T02:17:33Z")
So you finally updated to Canada Goose and using your backup archives you are seeing the following issue? Inspecting Archive... Scanning Archive Directories... Skipping unsupported archive: mnt Correcting Permissions.… --- ## [Tips for posting helpful replies with issues](https://community.muos.dev/t/tips-for-posting-helpful-replies-with-issues/731)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 30, 2025, 11:54pm UTC](https://community.muos.dev/t/tips-for-posting-helpful-replies-with-issues/731 "2025-08-30T23:54:03Z")
Having the Same Issue? Instead of posting just “me too” or “happens same here” please share details that can actually help narrow things down. Here are some useful things you can include… What have you already tried? L… --- ## [Theme Asset Image Naming](https://community.muos.dev/t/theme-asset-image-naming/707)
**Author:** [@bitter\_bizarro](https://community.muos.dev/u/bitter_bizarro)\ **Replies:** 0\ **Last updated:** [August 23, 2025, 3:15pm UTC](https://community.muos.dev/t/theme-asset-image-naming/707 "2025-08-23T15:15:46Z")
When including images in assets.muxzip for a theme it is a good idea to use Catalogue names when naming the png files. This will allow your theme to work on users devices regardless of their folder names and will help d… --- ## [Why extra cores are now being provided as separate downloads](https://community.muos.dev/t/why-extra-cores-are-now-being-provided-as-separate-downloads/672)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 9, 2025, 1:48pm UTC](https://community.muos.dev/t/why-extra-cores-are-now-being-provided-as-separate-downloads/672 "2025-08-09T13:48:45Z")
Starting from the Goose release of muOS, we have made a key change in how cores, and extra add-on systems, are distributed. You may have noticed we are no longer preinstalling everything on the base installable release … --- ## [Development Queries](https://community.muos.dev/t/development-queries/626)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [July 18, 2025, 1:37pm UTC](https://community.muos.dev/t/development-queries/626 "2025-07-18T13:37:11Z")
What to know before contributing or suggesting ideas… muOS is a custom firmware designed with purpose. It is not just another RetroArch launcher, not a rebadged distro, and definitely not a clone of anything else out th… --- ## [muOS Quick Start Guide](https://community.muos.dev/t/muos-quick-start-guide/479)
**Author:** [@arkun](https://community.muos.dev/u/arkun)\ **Replies:** 0\ **Last updated:** [June 2, 2025, 5:56am UTC](https://community.muos.dev/t/muos-quick-start-guide/479 "2025-06-02T05:56:38Z")
Getting Started With muOS Not completely updated for Canada Goose I’ve put together an abbreviated guide/FAQ with multiple sources for people who want to get started. General Sources https://community.muos.dev - Com… --- ## [The Desk Guide to Computing](https://community.muos.dev/t/the-desk-guide-to-computing/442)
**Author:** [@xonglebongle](https://community.muos.dev/u/xonglebongle)\ **Replies:** 0\ **Last updated:** [May 27, 2025, 2:53am UTC](https://community.muos.dev/t/the-desk-guide-to-computing/442 "2025-05-27T02:53:47Z")
A simple analogy that utilises a desk to explain how a computer works. I’m sure there is plenty to expand on here! CPU (Processor) How fast you can work at your desk. A faster CPU means more tasks done in less time. … --- ## [Read the Libretro documentation for cores!](https://community.muos.dev/t/read-the-libretro-documentation-for-cores/404)
**Author:** [@razorbeamz](https://community.muos.dev/u/razorbeamz)\ **Replies:** 0\ **Last updated:** [May 21, 2025, 1:54am UTC](https://community.muos.dev/t/read-the-libretro-documentation-for-cores/404 "2025-05-21T01:54:18Z")
Confused about how to use cores? Having trouble figuring out if your BIOS needs to be put in a subfolder? Check out the Libretro documentation! For example, here is their page on BIOS: --- ## [Why battery levels are just a guess](https://community.muos.dev/t/why-battery-levels-are-just-a-guess/368)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [May 14, 2025, 9:51pm UTC](https://community.muos.dev/t/why-battery-levels-are-just-a-guess/368 "2025-05-14T21:51:35Z")
Why Battery Levels Are Just a Guess and everything you want to know ( and some you probably didn’t ) about State of Charge on the H700+AXP717 Anbernic devices using the H700 SoC rely on the AXP717 charge controller and p… --- ## [Why didn't my game save?](https://community.muos.dev/t/why-didnt-my-game-save/343)
**Author:** [@system](https://community.muos.dev/u/system)\ **Replies:** 0\ **Last updated:** [May 10, 2025, 11:56am UTC](https://community.muos.dev/t/why-didnt-my-game-save/343 "2025-05-10T11:56:55Z")
How do I properly save my game? To ensure your in-game save is written to storage, you must exit content properly using one of the following methods: Menu + Start shortcut RetroArch Quick Menu \> Close Content (MENU + X)… --- ## [microSD Card Health](https://community.muos.dev/t/microsd-card-health/329)
**Author:** [@arkun](https://community.muos.dev/u/arkun)\ **Replies:** 0\ **Last updated:** [May 8, 2025, 1:27am UTC](https://community.muos.dev/t/microsd-card-health/329 "2025-05-08T01:27:01Z")
microSD Card Health microSD cards (mSD) are mass-manufactured compact flash memory. These were originally designed as removable storage, similar to thumb drives. Important Metrics for mSDs Sequential read/write (R/W… --- ## [PPSSPP Performance Optimisations](https://community.muos.dev/t/ppsspp-performance-optimisations/323)
**Author:** [@Habbening](https://community.muos.dev/u/Habbening)\ **Replies:** 0\ **Last updated:** [May 6, 2025, 5:34am UTC](https://community.muos.dev/t/ppsspp-performance-optimisations/323 "2025-05-06T05:34:42Z")
:red\_question\_mark: Q: Can I improve performance on lower end devices like the TrimUI Brick or RGxx/H series of handhelds? A: To some extent, yes—but you’re largely limited by the device’s hardware, thermal constraints, … [Next page](https://community.muos.dev/c/faq/7.md?page=1)