muOS is HERE for the Anbernic RG35XXSP! (Setup, Box Art, Roms, BIOS, Transfer Saves, Tweaks & More!)

In this video, we're going to be installing muOS on the Anbernic RG35XXSP.
Buy the Anbernic RG35XXSP here: joeysrh.link/ANB_RG35XXSP
Buy the Anbernic RG35XXSP here: joeysrh.link/GGG_RG35XXSP (cheaper - use code JOEY for 15% off)
Buy the 128GB SD card here: joeysrh.link/AMZN_128GBSD
Buy the 256GB SD card here: joeysrh.link/AMZN_256GBSD
Buy the SD card reader here: joeysrh.link/AMZN_SDREADER
muOS: muos.dev/release/plush (use Jdownloader if slow)
Alternative Download Link: mega.nz/file/Ryt3CRDb#p7pVHo4...
muOS Discord: / discord
Antikk Github: github.com/antiKk/muOS-Artwork
muOS Box Art Guide: • muOS Complete Setup Gu...
KantOS Theme: github.com/Tressley/KantOS
ROMs & BIOS: • Retro Game ROMs & BIOS...
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Disclaimer: Devices are typically sent to me for review by different manufacturer's or resellers. All opinions are my own, they have not seen the video ahead of time and no money has exchanged hands. Or, put simply, the review is always my authentic opinion and words.
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Timestamps
00:00 - Preparation
02:12 - Install muOS
03:29 - Adding ROMs & BIOS
06:16 - Adding Box Art
06:36 - muOS Tour
08:37 - Theme Picker
09:29 - muOS Tour Continued
10:31 - RetroArch Settings
12:02 - Removing Overlays & Shaders
13:04 - GB/GBA Colors
13:44 - Setting Cores for Systems
15:01 - Transferring Saves from Stock OS

[@JoeysRetroHandhelds]

Note: Just to clarify on my single card over two card comment. The way that box art works currently is that it exists on the first SD card, but if your roms are on the second SD card, it's a bit of a hassle to scrape those roms, and then have the artwork show up in the right spot on the first SD card. So much so that I chose to make the guide one SD card only. If you don't care about box art, feel free to use two SD cards. Format the second SD card as EXFAT, then create a ROMS directory, and follow the same steps with just adding subfolders for each system. That's all, the only thing on that card will be a ROMS folder with system subfolders and your games inside.

[@zero604]

A few more tips: 1) In Retroarch (settings > directories), you can change the BIOS and Saves directory to be on the TF2 card, then copy all your BIOS and saves to that card so that they're all together with the ROMs. This way you don't need to back these up when upgrading OS. You just need to backup artwork and retroarch settings using the backup manager in MuOS. 2) Since in-game save files are compatible with all cores, there's really no reason for it to save them in core-specific folders. In Retroarch (settings>saving) you can disable "sort saves by core" and enable "sort saves by content folder" so all your saves are in a folder with the same name as the console folder.

[@andreandre9153]

Nice tips,i will try this..thx you so much

[@Champs859]

Do i need to create a save folder if im gonna change the directory of my in game saves in sd2?

[@zero604]

@Champs859 yeah it can be anywhere on SD2, just make sure retroarch knows where it is. You don't need to create the subfolders, just the main Saves folder.

[@hexmaniack]

A good day for the SP. Really appreciate the work of all the talented devs and content creators like you. 🙏

[@djwrahfael]

I'll try to install the muOS on my RG35XXSP after I receive my 128 GB micro SD card. Great video dude! ✌🏻

[@DoDo-lw1xr]

lets goooo! i just bought one and watched all your videos about it! thank you for all your vids they are so good:)

[@ItsNevet]

I've been using the RG35XX H version, which felt super rough around the edges (understandably so). The new muOS, and the changes it brings for the SP, feel tremendously better. Thank you so much for the simple and straightforward guide, Joey!

[@mikocappuccino]

Ohh, im currently downloading muos for the H version. Is it bad?

[@chigyver]

Thanks Joey, you're a saint!

[@MadShmupper]

Best reviewer and retro gaming news man around!👾🕹️🎮

[@Pridetoons]

I just got my RG35XX SP!!! I'm about to go ham on mine!

[@jacovdwal8513]

Now this is a tutorial. Not just a show of of what you can do with it. Thanks for taking the time to go into the detail, it helps us noobs alot.

[@STR82DVD]

Agreed. It's a solid CFW lad. Great setup guide lad. Thanks!

[@M64-Snyderz64]

Super cool video 😮

[@wizzel22]

The boot time is 6.3 seconds and that's a great Achievement. Congrats!

[@Cronoo]

Awesome! Easy to follow even for a newbie.

[@matt_HM]

Congrats on 30k!

[@JoeysRetroHandhelds]

Oh shoot, I had no idea LOL thank you!

[@matt_HM]

@@JoeysRetroHandheldsdon’t forget to celebrate!! 🎉

[@chocho2188]

Thanks joey 🙂

[@Pridetoons]

Just a Heads Up Micro Center Micro SD cards work amazingly! Me and Zu always use Micro Center SD Cards on our Handhelds.

[@02337755]

FOR ANYONE ON MAC - Raspberry Pi Imager also works to flash the card

[@frankysour]

😮 no "format to ExFat before flashing" indication? First time I see this in one of these guided, congrats! Finally somebody understood that that is a useless step

[@ASAN2042]

Maybe its just me but its taking a looooong time to download

[@spankwise]

same, like a few hours to download and im connected to an Ethernet with no background programs running

[@JoeysRetroHandhelds]

Alternative link in the description or use Jdownloader like I said in the description, multiple options :)

[@smallmistake]

Mine got to 1.3GB and then said it was complete even though it obviously wasn't. I tried again with Jdownloader 2 and it worked fine, still pretty slow at ~1.7MBps, but way faster than I was getting. Apparently there's a torrent link on the Discord too.

[@nirgunawish]

@@JoeysRetroHandhelds pls do two card setup. i will not have my roms on the system sd

[@JoeysRetroHandhelds]

@@nirgunawish You can check the muOS website for instructions, I won't be doing another video unfortunately.

[@Shawnallenb]

Joey, Can you make a tutorial video that goes in depth to setting up SyncThing for both muOS and the Steam Deck?

[@miroslavtonhauser]

Great video, everything is well explained. You don't want to make a video on muOS (AnbernicSP) how to set Portmaster correctly?

[@johnkiyo9752]

HDMI output is completely broken right now. Once you unplug the device from the TV, sound stops working from the SP, even after numerous restarts, and resetting the config. Only fix is to reflash the card...

[@kevinstrident]

What version are you on? Just saying "right now" probably won't be of much use in 3 weeks or so.

[@johnkiyo9752]

@@kevinstrident latest release, 2405.1 REFRIED BEANS

[@kevinstrident]

@@johnkiyo9752 Thanks for clarifying.

[@savagealpha]

Thanks man!

[@iRobYourLunch]

I want to upgrade to this pretty bad, but I just followed your first guide exactly a week ago lol. I'm too lazy to go back and reflash the SD card that I just bought to do the first run of this. Especially after all the time spent getting it all configured in a way that I'm happy with lol. Wish there was an easier way to upgrade software but I guess that is where the benefits of having 2 SD cards comes into play. Joey, do you think you might be able to make an upgrade guide as well?

[@doublex85]

14:27 The better (and intended) option is to put your ROMs into different folders for different cores. Keep most of your GBA roms in the "GBA" folder and make another "GBA but with mGBA Rumble" folder, then move your ROMs and assign the core for that folder.

[@JoeysRetroHandhelds]

Good option as well yep.

[@markbigney2956]

Thanks! Do you have any plans on doing a guide for Syncthing? Your guide for FolderSync was amazing, but now my Linux devices feel left out!

[@wizzel22]

I used Balena Etcher to flash MuOS. What are the problems using it?

[@rafaelgarcia5388]

@joey hey brotha question installed refried on rg35xx plus. All is perfect but it doesn't go on sleep mode..can u help

[@Sebbz]

Thank you for this great video Joey! Just updated from the previous muOS version. Do anyone else have issues with frame pacing issues in MGBA rumble and gpsp core? I didn't have this issue in my previos muOS version. Frameskipping is turned off and I'm using the sharp shimmerless shader. I can see it when running left or right in all pokemon games. What is the standard shader used for GBA in muOS? Retroarch automatically used the sharp shimmerless shader I already used in my previous muOS version.

[@WillC1020]

Hey Joey, this is great stuff. However, from what I understand the only way to update MuOS is by performing a fresh install. Is there a way to save all of these settings and apply to new updates? While it is great, I just don’t want to have to do all this every time there’s an update.

[@JoeysRetroHandhelds]

Yep, use the backup options in apps, task commander. Then restore them using archive manager. It'll restore a lot, not everything.

[@02337755]

Perfect. Just what I was going to ask.

[@ZOUMBIEZ]

Can i use the stock sd card built it on my rg35xx h?

[@Adam-or6mb]

Great video thank you! I do have an issue when i change the sleep function in settings and then save it the whole system crashes and all i get is a black screen. I then power cycle it and it crashes on the splash screen. I have the RG35XXsp model

[@caviasjeannete]

Hello, good morning, I have a couple of questions, can you play nds? With this OS, platforms such as n64, dreamcast, psp are optimized? With this OS, are the same filters applied as well as the Gba logo in the games? Do they serve functions like WiFi and Bluetooth? Thanks, I'm using the translator so my English won't be perfect

[@RobRichard-v2r]

Sorry - beginner here, is retroarch standard on the system or is it part of the muOS I am looking to be able to run a pixel grid shader over GBA/GBC games but I’m a little confused with all the OS options

[@barretthebullyvii8734]

HDMI out still not working, if u use it, the sound will no longer work from the device. Port master keeps crashing and wont responde. And still no scrapper....Just thought yall would like to know

[@ideastoragedb]

How can I upgrade my storage to a larger MicroSD? I only want one card and not two. I can't get the partition to expand after flashing the smaller card onto the larger one. So frustrating. The boot partition is locked it looks as well. That might be the issue but don't know how to unlock it.

[@FLASHMOD3]

After putting Muos on the ad card so matter what I do I cant get into it. It always says access denied even when trying to open from my computer.

[@semirionu]

Did someone try out the HDMI output? What are the differences from the StockOS?

[@ArroganceClause]

Is there a similar guide for doing this for a MacBook?

[@dabman9688]

What about swapping the joystick input to dpad for dreamcast games?

[@nickentros]

Can you pass the same card between an SP and a 28XX to keep the same saves and states?

[@JoeysRetroHandhelds]

Yep.

[@diego_smw]

3:02 After I select "RG35XX - SP", my device shows a boot screen that says "FIRMWARE UPDATE" and "Updating 'boot.bin' for device!". Then, after a few seconds, it says "Updating 'packages.bin' for device!". Once a few more seconds go by, the screen goes black and the green LED stays on, but nothing happens. I'm using a SanDisk-brand 128GB SD card, and my SD card reader is also UGREEN brand. I've followed the tutorial closely, but I can't get past this step. Any suggestions?

[@JoeysRetroHandhelds]

Try redownloading the image and reflashing, seems something corrupted.

[@dukea0460]

Do I just copy paste everything in bios ik people don’t explain for legal reasons but I’m lost

[@FS-zt6tm]

mgba rumble doesn't have auto save/load state. I was trying to figure out why my games wouldn't quick resume and realized the core didn't support it. Quick resume works great in gpsp

[@JoeysRetroHandhelds]

It's a bug, pins in the Discord have a fix.

[@soupnazi81]

1. Can you remap the power button so that it toggles between dpad and joystick for N64, Dreamcast, and PsP? 2. Does N64 work in retroarch rather than the horrible standalone emulator? I see you csn change thr core but are the cores in retroarch or the standalone n64 emulator?

[@JoeysRetroHandhelds]

1. No. 2. Both are available. If it works, shrug, I didn't buy this for N64 personally.

[@brunan-gi147]

Thanks for the detailed guide, Joey. I set up MUOS today following your video perfectly. One question: the speaker is crackling a lot after the update even on lower volumes. Any ideas? I know its mono and cheap but I dont believe its normal. Thanks

[@JoeysRetroHandhelds]

Depends what you mean, the H700 series has an issue across all devices with static noise and crackling (even across all cfw). But if it's something else, not really sure.

[@goldhornds4394]

I have an RG35XXSP currently being delivered to me, it'll still take some days for it to arrive, so I wanted to ask this ahead of time I don't have much experience with SD cards, other than using it for say, my 3DS and Steam Deck, so sorry if this sounds like a stupid question Why do you suggest I get an SD card reader? Do I only need it if my computer doesn't have an SD card slot? I have one on my current computer and it currently does not have an SD card inserted. Can't I just insert it into my computer, or would that cause problems?

[@JoeysRetroHandhelds]

You can.

[@ninjacoiffeur9477]

Is there a way to just update from beans to bean refried by putting the image in update folder (rg35xxsp) ?

[@JoeysRetroHandhelds]

Nope.

[@codered7070]

Hey Joey, how have you gone about customizing inputs and hot keys for N64 or Dreamcast?

[@JoeysRetroHandhelds]

Pretty simple, I don't play either of those on a device without sticks hehe

[@limaksokim]

Hi, thanks for the overview. How did you handle PSP and N64 games? In stock OS you can switch between analog/d-pad by pressing power button but this seems to not work on muOS. Any advice?

[@JoeysRetroHandhelds]

Correct, they don't have that function. I don't use the SP for N64/PSP personally.

[@scaryb0i24]

I can't seem to get the download for the firmware to work :( it either fails or just doesnt start

[@JoeysRetroHandhelds]

Use Jdownloader.

[@Mbuna92]

Does sleep work on drastic?

[@Agumon5]

This OS is literally one patch away from being damn near perfect.

[@ivanm10]

Hello.. I was able to install MUOS on this however the issue I am having is with PPSSPP I am unable to switch between the D-Pad and Analog.. on stock OS it used to be power button to use as a Hotkey.. I checked but not sure how to put the hotkey to toggle in MUOS .. PLEASE HELP🙏

[@JoeysRetroHandhelds]

This feature isn't in muos yet.

[@PongbyAtari]

Retroachievements has quit loading on both my Anbernic SP's very odd they were working but have quit am I going to have to re-install refried beans?

[@JoeysRetroHandhelds]

I can't say I've experienced that issue, you may want to join the muOS Discord and report it, not sure what's going on.

[@PongbyAtari]

@JoeysRetroHandhelds I finally figured it out the system showed me being connected to the internet when I wasn't so once I was truly connected everything works fine 😊

[@SuburbaniteUrbanite]

Does it still do Bluetooth?

[@nym49]

Is there an easy way to customize the hotkey combinations on muOS? I find some quite odd.

[@JoeysRetroHandhelds]

I show it in the video unless you mean something else?

[@nym49]

@@JoeysRetroHandhelds Thank you for the reply. Aren't those the in-game Retroarch ones and not the system ones like brightness control etc.?

[@gameftf4555]

The muOS Discord invite link doesn't work anymore, can you post a new one?

[@JoeysRetroHandhelds]

You sure? Seems to work: discord.gg/USS5ybVtDz

[@PongbyAtari]

Retro Achievements quit loading on my Ambernic SP with muos refried beans I have checked retroarch and I have them turned on and have even re entered my user name and password and saved my configuration. Lastly all my other devices retro achievements is working fine.

[@Paintjeezy]

What was the issue with balena etcher?

[@josephfaircloth8322]

I just used Belena etcher and I’m not seeing any issues at all. I’ve used it for 3-4 devices now. 🤷‍♂️

[@Paintjeezy]

@@josephfaircloth8322 same on my two. Good to hear!

[@ruinsofalph]

Will a 64gb card work okay for the new os? I only have like 10 gbc games on my card

[@JoeysRetroHandhelds]

Yep.

[@ruinsofalph]

@@JoeysRetroHandhelds awesome I’m downloading now and gonna get set up. Thanks for your vids

[@Iorkca]

Can anyone advise me on how to override the core screen scaling, I have it set to full in RA but when I load a game it defaults to the core provided scaling.

[@JoeysRetroHandhelds]

Overrides, save core override.

[@Iorkca]

@@JoeysRetroHandhelds Thank you, i guess I forgot to do that when I changed it

[@tombstonefreak]

stock sdcard died after first game launch..cannot keep it

[@crypto7365]

Is there an option to search for games?

[@JoeysRetroHandhelds]

Not yet no.

[@Croyanter]

What about macos?

[@loxleymv]

You might want to add a pin comment on how to fix the screen scaling. I couldn’t figure out how to keep it filled

[@JoeysRetroHandhelds]

Hm? Can you give an example?

[@The_Invisible_Man]

I’m on the verge of buying the SP, the only thing what is stopping me is the miyoo flip. I wonder if it will have a better cpu? And when it will be released. Can I hold on…….? 😂

[@JoeysRetroHandhelds]

Hah, good luck.

[@nickentros]

If the Miyoo A30 is any indicator, don’t waste your time and just get the 35XXSP

[@The_Invisible_Man]

@@nickentrosI love the miyoo mini plus so I have high hopes for the flip.

[@anonymousanonymous5732]

What's wrong with using a 512 gig micro SD card ?

[@JoeysRetroHandhelds]

Nothing. Just isn't 512GB worth of games that work on this.

[@soupnazi81]

I'm not sure what I'm doing wrong. I've tried it three times. First I installed the Mu OS firmware that came before refried beans for the rg35xx sp on a 64 GB SanDisk card. I followed instructions and Flash the firmware with Rufus. And then in Windows 7 I opened up the SD card after initializing it in the SP device. And Windows management I can see a whole bunch of partitions but there's no ROMS partition just a RAW unformatted partition. This raw partition I can't change the drive letter or format it to FAT32 exfat or NTFS. Then on my second attempt I used a 256 GB sand this micro SD card and then tried it with the newest version of muos refried beans for my SP as well. Then I get the same exact thing I have a big 200 plus gigabyte raw partition at the end of SD card but it can't be assigned a drive letter or formatted

[@JoeysRetroHandhelds]

You have to insert it into the device, turn it on and go through setup first.

[@soupnazi81]

@@JoeysRetroHandhelds yup, I did that. I inserted into device, it showed it was setting up the partitions, I selected the SP device, then powered down and put into my PC

[@JoeysRetroHandhelds]

@@soupnazi81 No I mean, you need to through the entire setup like the video shows until you see Explore Content.

[@soupnazi81]

@@JoeysRetroHandhelds yup, I let it finish the setup on the SP device it goy to explore content then powered it down. (followed exactly until 3:30mark). Then when its inserted into PC, there's no ROM partition at the end of the oyher partitions, just a big RAW partition that can't be assigned a drive letter or formatted.

[@JoeysRetroHandhelds]

I would report that on the muos discord, sounds like a weird bug. I've never seen that.

[@alexisdanel9370]

i just want nesbox theme from Emulation station :( is muOS using emulation station?

[@JoeysRetroHandhelds]

It's not.

[@alexisdanel9370]

@@JoeysRetroHandhelds do you recommend knuli? or not yet

[@overoula]

@@alexisdanel9370 knulli works amazing on mine. also looks better ofcourse... emulation station is always nice.

[@MFourtySeven]

stay with stock, or back up right as soon as you get it cause you will mess up somewhere.

[@Sebbz]

Changelog in this version of BEANS: Significant Changes: Added RG28XX and RG35XX-SP (with lid) support Added Sleep and shutdown mode Please keep in mind PortMaster content may not sleep correctly! Added HDMI audio output Added HDMI resolution change Added visual options to remove ( ) [ ] and replace - to : on content names Fixed global configuration corruption for those who like to press the reset button for funsies Fixed network connection to be more stable for boot connections Themes are now placed in SD1 (MUOS/theme/active) for changing on-the-fly or fixing errors easily Backup Manager and System Refresh have been merged to Task Toolkit Menu is now more responsive and will now remember previous location Visual indicators for volume and brightness are more accurate muOS is now device agnostic - Reliance on hard code paths and variables have reduced by 90% This will make it easier to support, and develop for, more devices in the future Updated RetroArch to 1.19.1 and multiple core updates Updated secret mode Updated supporter screen

[@bravozero6]

Whats the benefit of this it seems like a massive downgrade? (New to this)

[@ClintRhea]

Stock RA is a much better experience though

[@JoeysRetroHandhelds]

I would very much disagree, but we all have options.

[@maclainjohnson7666]

Bluetooth support ?

[@JoeysRetroHandhelds]

Negative.

[@wizzel22]

Message to the MuOS Team: Please incorporate "Information" into "Configuration". This would spare us a more or less useless Main Menu entry. Makes Navigation better.

[@vishveshbargal566]

This part was a bit unclear 5:42

[@PongbyAtari]

To bad you have to start with a fresh install and there wasnt a simple update.

[@JoeysRetroHandhelds]

If you're coming from muos already, it's really easy using task commander! Can backup almost everything and restore it. (don't backup config or wifi)

[@iced00777]

@@JoeysRetroHandhelds Are there instructions to update?

[@JoeysRetroHandhelds]

@@iced00777 muOS discord has for what to backup, but it still requires a full flash.

[@Stunnax757]

I mean.. you could just copy and paste (manually backup) the whole retroarch folder (maybe another folder or two?) And keep ROMs on a second card. Right?

[@JoeysRetroHandhelds]

@@Stunnax757 They made a lot of changes to RetroArch between builds, so I would definitely not do that.

[@hihellokitty85]

You should have mentioned the broken HDMI issue like the others have mentioned. Thanks...

[@JoeysRetroHandhelds]

I don't use HDMI, so how was I to know?

[@damikki]

Great video but you don't need to use shaders on MuOS, the issue requiring shaders are in Stock OS

[@JoeysRetroHandhelds]

No, the devs included shaders as it's across all CFW.

[@nunosilva3832]

the using only one sd card puts me abit off

[@JoeysRetroHandhelds]

You can use two, just don't suggest it unless you don't care about box art. They have instructions on their website.

[@jasonshiers5771]

Can't stand muOS i prefer Knulli

[@overoula]

same.. looks better ofc and many themes etc etc... batocera ftw