Post by @oldthink34@mstdn.games

2026-03-25 23:30 UTC

I&#39;ve been wanting to switch the firmware on my #Anbernic RG40XXH from Knulli to #muOS for a while now because almost every time I try to use the device it&#39;s out of battery. From what I understand, muOS has a feature that will make a save state and shut the device off after it&#39;s been in standby for a certain amount of time, which sounds great. I&#39;ve also been wanting to set up #SyncThing for a long time so I could use cloud saves and play through my retro games on multiple devices. I started to do that today and learned that Knulli doesn&#39;t play well with SyncThing, which solidified my decision to switch to muOS, which I am doing right now!

Replies (1)

@oldthink34@mstdn.games 2026-03-26 19:19

Installing #muOS on my RG40XXH was super easy. The devs don’t recommend using #BalenaEtcher for flashing the image to an SD card but I couldn’t figure out any of the programs they do recommend on Linux. Luckily, it seems like it did the job without issue. I spent a bunch of time trying to get #SyncThing set up this morning since my PC wasn’t recognizing any of my handhelds. I tried opening up ports on my router and running a command to allow SyncThing through the #Linux firewall. Seems like the latter was the solution! Now I just have to figure out the logistics of juggling PS1 save files between #RetroArch on my RG40XXH and #DuckStation on my Razer Edge. Things are looking promising though, as I just found out muOS has a DuckStation core on RetroArch, which may even get me better performance with #FinalFantasyIX!

Open ##2487970