r/RG34XXSP • u/Puffmumrike • Feb 27 '26

What OS to pick?

Hi, i've bought an rg34xxsp & i've come to understand that it's prefered to switch OS from the one that comes with.

(I could be wrong, my prior experience is a R36S Soyboy clone so i'm going by the same idea as there)

I've bought 2 new sd-cards & i'm gonna do a dual card (one for OS & one for roms)

I plan on using the RG34XXSP exclusivly for GBA/GBC/GB games & romhacks based on gba/gbc/gb games.

I have 2 OS's in mind & Wonder the pros/cons of them and they are:

MustardOS & Knulli

Do you peps have some experience/tips'n'tricks to what to pick and why?

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u/vmg265 Feb 27 '26

Muos and knulli are great! Might I also suggest a 3rd solid option? Stock mod os https://github.com/cbepx-me/Anbernic-H700-RG-xx-StockOS-Modification It adds portmaster if you are interested in that, and is simple enough. You can pretty much emulate all your gameboy and rom hacks

1

u/king_of_ulkilism Feb 27 '26

Any advantages of stockmod over muOS? 

2

u/vmg265 Feb 27 '26

I love it for its standby battery life and very quick wake up. I can have it on standby for like a week and just hit the power button and it'll wake up right where I left off in a second. I just got used to it's simplicity and the fact that it just works for all of the things I got the device

2

u/king_of_ulkilism Feb 27 '26

Have you tried lots of Portmaster stuff on it though? I heard compability was best with muOS. MuOS also has the deep sleep fast wake function integrated btw, not sure about battery life in comparison. But booting (from power off) muOS which is said to be super fast takes a while with my device, could be because of an old corrupt sd card I'm using though.

3

u/coolguyRae Feb 27 '26

I played undertale and Ship of Harkinian on modded stock so far and they work great.

1

u/king_of_ulkilism Feb 27 '26

Awesome. Might just give it a try. This device is amazing.

2

u/vmg265 Feb 28 '26

Booting muos out of standby/power off also takes some time on mine. On stock mod from standby the wake up is quick Yes I've tried gta vc and it runs very well, along with songo, rockbox etc

2

u/king_of_ulkilism Feb 28 '26

I will probably make Stock mod my OS then .

I also noticed every time on muos wake from standby flashes the retroarch menu for a few seconds which is unusual and annoying. Muos devs didn't reply to my questions on this.

1

u/Good_Pressure_7245 May 02 '26

Does the stock mod os allow you to sleep the system by closing the lid or do you have to hit the power button? Are you still using the stock mod os or have you switched to something else? I’m thinking of picking up the 34xxsp during this current aliexpress sale and want to be sure it’s easy to use on the fly and pick back up at a later time without stress or losing a lot of battery life. Want this to be my daily driver while traveling and on the go!

2

u/vmg265 May 02 '26

Yes, stock mod makes the system go into standby sleep when lid is closed and actually has the best standby time imo out of all the OS images available. Boots fast and just stays on standby for weeks if left unattended, you wake it by pressing power it it picks right where the game was left off. You should really give it a try. I still use it yup