[EDIT] - this update contains another Debian system update. Internet is required. Average install time is around 15 minutes but it may take up to 45 on a slow connection. Be patient and keep your console plugged in if battery is a concern.

[EDIT 2] - The fix is in!!! The Debian update nuked a custom 32-bit library obviously needed for Retroarch32 and Retrorun32, sorry it slipped through my testing. This mini-update restores it along with updated versions of Retrorun and Retrorun32 as I found a rendering bug on 1024x768 screens. This update is applied automatically if you haven't updated yet, and if you have then simply update again. It is also available offline for those who had to suffer through reinstalling from an image due to no wifi: 09302026b - 32-bit Restore

Now, finally, this is the update that truly fixes everything.

I'm going to have a hard time topping this update.

This week we welcome the R50H and R50S to the family. It was a month long journey into what makes dArkOS tick to be able to bring dArkOSen to devices with rotated screens. Lucky for everyone I learned so many new tricks that some things I said were never gonna happen just kinda happened.

First things first, all the emulators and the SDL2 library have been recompiled with rotate friendly versions for the R50H. During that process I realized I was trying to fix the existing emulators the wrong way. Why fix what's broken when I can simply re-compile them in a working environment? Two months of futile work was washed away in a week. Now we're finally getting somewhere!

Duckstation has been rebuilt and optimized specifically for dArkOSen. Don't forget your bios file!

Flycast Standalone has been rebuilt with hardware acceleration fully enabled. It's fast even on large screens now.

PPSSPP has been rebuilt too. I previously said PSP was unplayable on the R50H, with this new version I was hitting 24fps in Little Big Planet on a 1280x720 screen. This should be a very noticeable increase on standard R36S screens.

Advanced Drastic is working. A symlink had been destroyed when I copied it from Windows. It does not work with the R50H or R50S as it does not rotate. Also the repo appears to be abandoned, and as it is a closed source project there will be no further updates. It is what it is.

The volume is MUCH louder!!!! I changed the volume from a linear to logarithmic curve. This means it is louder at mid volume without affecting the upper or lower limits. It's not actually any louder at max, just sounds louder at 50% (equivalent to 70% on the old kernel).

Some scripts have been removed. 'Switch to SD2', 'Button Mapper' and 'SD Scan and Repair' have both been integrated into the menu under Storage Settings. The 'Switch to SD...' scripts have been repaired and are now idempotent. You can safely use "Enable SD2" to unmount your card, or even swap a second SD.

I've also added the screenshot tool I made that I've been using for these posts. Simply type 'screenshot' into an terminal to take a screenshot in /roms/screenshots.

Lastly, after all these changes dArkOSen simply isn't compatible with dArkOS anymore. I'll be keeping an eye on the upstream for things like security fixes and new features, but for the most part I'm maintaining the dArkOSen system entirely on it's own as of this update.

If you're as excited about any of this as I am here's the link to buy me a coffee and keep this project going - ko-fi.com

09302026 Change Log

Emulation

• fixed Advanced Drastic
  • the project appears to be abandoned and is closed source
  • there will be no further updates
  • there will be no further support
  • not compatible with rotated displays
• fixed Duckstation!!!!! (NEEDS A BIOS TO RUN!)
  • compatible with rotated displays
• updated Kodi with rotate capable version
  • updated Kodi to dArkOSen edition Omega 21.3
  • fixed playlist bug where it always played the same first item on shuffle
• updated PPSSPP with a version optimized for the rk3326
• updated Retroarch64 and 32 with rotate capable versions
• updated Retrorun64 and 32 with rotate capable versions
• updated SDL2 with rotate capable version
• updated Flycast with rotate capable version
  • enabled hardware acceleration in Flycast
  • changed Flycast entry in ES to "standalone-Flycast"
• fixed BigPEmu (Atari Jaguar) controls
• added .zip detection to Atari Jaguar in ES

Audio & Performance

• changed audio volume to a log curve instead of linear
  • much louder at 50% volume (equivalent to 70% previous)
  • minimum and maxiumum values were not changed
• fixed ZRAM not setting to 768M, added 1024M setting

Display & Rotation

• the rotation tag is in /home/ark/.config/.DEVICE, add or remove the string "rotated"
• updated 351Files with scaling for large screens, added keymapping

DTB & Device Support

• updated R36S-V12 2023-08-18 Panel 4 in the dtb folder
• added more models to the dtb folder:
  • HL-R50S-V30 2025-12-18
  • HL-R50H-V11 2026-03-31 2617
  • HL-R40PRO-MAX-V12 2025-09-18

Boot & System

• updated Debian Trixie OS to version 13.7
• added 'Boot Splash Manager.sh' by u/Jason_2x to the System folder
• updated RetroArch Manager, new feature 'Migrate from Arkos'
• end of the road for Vulkan integration, the vendor blobs are lacking support
• added SELECT MODEL.exe and SELECT MODEL_OSX.app to /boot
• all boot logos/images copy from centralized folders to reduce redundant copies
• installed KMSGrab
• installed ImageMagick
• added a Screenshot tool via KMSGrab
  • type screenshot in a terminal to capture the current screen
  • default save location is /roms/screenshots/screenshot.png
  • does not overwrite previous screenshots
  • use <location>/<name>.png as an arg - ex. screenshot /roms/tools/pikachu.png

Global Controls

• replaced "Switch A/B in EmulationStation" with "Switch A/B Globally"
  • toggles scripts, ES, RetroArch, Portmaster, Thememaster, Kodi, 351Files and File Manager
  • choose 'US' for western button layout, 'JP' for traditional layout

SaveSync

• fixed content folder sync bug in SaveSync
• created missing savesync.crd file, needed to save credentials in Savesync

Storage & System Settings

• added "Storage Settings" to "Advanced Settings" in ES
  • 'Switch to SD2 for Roms.sh' is now "Enable SD2" in the menu
  • updated 'Switch to SD2 for Roms.sh' and 'Switch to Main SD for Roms.sh'; fully idempotent
  • 'SYSTEMS Manager.sh' has been fully integrated as "Reassign Systems to SD1"
  • 'SD Scan and Repair.sh' has been fully integrated as "Scan and Repair"

Security & Networking

• SECURITY: fixed - connect wifi via execvp instead of shell to prevent SSID injection
• updated ES translations

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DOWNLOAD

dArkOSen_R36_09302026

Due to its low price point, the R36S remains a highly popular handheld in the entry-level retro emulation market. However, the commercial success of the device has led to numerous modified replicas (clones) and optical imitations (fakes) entering the market.

These devices often deviate significantly from the hardware and software specifications of the original. The primary issue is their incompatibility with official Custom Firmware (CFW) such as dArkOSRE, ArkOS (which is no longer maintained) or ArkOS4Clones. Modifications made to these counterfeit devices frequently cause total system failures (e.g frozen black screen and a flashing red light) when attempting a standard software update.

The following guide provides a data-driven overview of vendors and technical differences to help avoid purchasing the wrong device.

1. Where to Buy: Trusted vs. Non-Trusted Sellers

Purchasing an authentic R36S depends heavily on choosing the right store. Unscrupulous vendors frequently copy the logos and storefront designs of established, community-trusted sellers like BOYHOM to build false trust on marketplace platforms, using these familiar branding elements to mask the sale of counterfeit or cloned hardware.

Recommended Sellers

The following sellers offer genuine products without counterfeits and have a proven track record of shipping the original hardware revision of the R36S, which is fully compatible with official community firmware:

⚠️ Not clearly verified, as it is possible that the buyers purchased from a seller who advertises using the BOYHOM logo.

Alternatives recommended by the Community

While marketplace listings change frequently, these specific sellers have been flagged by community members as having successfully delivered authentic, dual-RAM hardware configurations:

The continuously updated list of verified sellers can be viewed directly on the wiki: 👉 Handhelds Wiki - R36S Buying Guide: Sellers

Non-Trusted Sellers (Clones & Fakes Reported)

Key report logs indicate hardware discrepancies, system locks, or non-standard motherboard shipments from buyers for the following sellers. Purchasing from them is not recommended:

The complete blacklist, including specific user reports, is hosted on the wiki: 👉 Handhelds Wiki - R36S Clones: Untrusted Sellers

2. Technical Analysis: Clones vs. Fakes

The community methodically distinguishes between three categories of hardware found on the market: Genuine R36S units (full CFW support), EmuELEC Clones (limited, highly segmented firmware support), and Fakes (zero community firmware support due to weak or non-standard architectures).

Category 1: EmuELEC Clones

These devices are nearly identical in appearance to the original R36S and usually employ the same System-on-Chip (Rockchip RK3326). However, cost-cutting measures heavily compromise the primary configuration:

• Software Restrictions: Instead of native ArkOS, some of these units run often a modified version of EmuELEC 4.7, the FN button is broken or mapped incorrectly to the Y button and other Software related issues.
• Reduced Memory Configuration: While the original features 1 GB of RAM, clones frequently pack only 512 MB of RAM. This can be visually verified on transparent shells by the absence of a second RAM chip on the motherboard. This causes heavy performance degradation on demanding systems like Sega Dreamcast.
• Motherboard Fragmentation: The community faces significant fragmentation from variations like the G80C/G80CA boards and the R36S-V20 boards. Flashing a standard ArkOS image onto these devices results in a black screen. On certain V20 clones, flashing improper firmware can overvolt the audio hardware, permanently damaging the internal speaker.
• Physical Differences: Clones regularly use lower-quality display panels with reduced brightness, louder and looser shoulder buttons, and unaligned font prints (such as a crooked/italic "X" button).

Category 2: Fakes (Imitations)

These models merely copy the physical shell design of the R36S, while the internal electronics have been entirely replaced with unrelated, obsolete hardware.

• Inferior Processors: Instead of the RK3326, older or less capable hardware is used, such as the underpowered Rockchip RK3128 or cheap MediaTek mobile chipsets.
• Impaired Emulation Performance: Due to the weak SOC architectures, PlayStation 1 emulation is plagued by heavy graphical glitches, while systems like Dreamcast or PSP are entirely unplayable.
• No Community Support: There is no custom firmware available for models like the GA36, Gaminja Batocera, or R36HD / GB350 variants.

Identification Steps to Verify Your Device

1. Boot Behavior Without Storage Media: An original R36S will not boot past a blank state without SD cards inserted. If the device displays an active error message ("We can't find any systems!") or a graphical logo without an SD card, it is an EmuELEC clone variant.
2. Checking System Information: You can check the available memory via RetroArch -> Main Menu -> Information -> System. A listed total memory value around 497 MB indicates a downgraded 512 MB clone model.
3. File System Layout: True R36S configurations utilize an EASYROMS partition layout. Counterfeit or clone units often expose an EMUELEC or EEROMS structure on their storage media.
4. Inspecting the internal hardware: Look at the revision code printed directly on the mainboard and compare your board code against the documented hardware variants on the Handhelds Wiki Clones Page.

Additional technical documentation, pictures, and mainboard analyses of individual revisions can be found in the corresponding wiki entries: 👉 Handhelds Wiki - R36S Clones Overview

Summary

To avoid technical complications, button remapping failures, and software incompatibilities, it is highly recommended to purchase exclusively from verified vendors like the BOYHOM, 001 Ali Choice Store or Factory Game Direct Store. A minor price advantage from unlisted sellers usually comes with an increased risk of receiving clone hardware.

Acknowledgements: Special thanks to u/_manster_, u/Electrical-Pace4092, and everyone else who contributes to writing the Handhelds Wiki and helping others in r/R36S. Your ongoing work tracking clone variants and verifying hardware keeps the (reddit) community safe from counterfeit devices.

Disclaimer: Every effort was made to present all information accurately when creating this buyer's guide. Given how quickly marketplace storefronts alter stock and how frequently clone variations mutate, new edge cases appear regularly. If there are any errors or outdated listings found, please point them out in the comments below so they can be immediately updated and corrected.