The CFW options for the Anbernic RG28XX just keep on coming! We just had MinUI make it over the other day, read about that here. Now Knulli is up next to bat with another great experience that enhances the use of the RG28XX. Check out our review of the 28XX here or our first impressions here.

Knulli on RG28XX

Knulli on RG28XX

How to Set Up

This CFW is extremely easy to apply to your device and it took me about 10 minutes to get it up and running. First, you need to make sure you have an image flashing tool like Balena Etcher, Rufus, or any other option that you prefer. This is the main thing you will need to get the firmware image transferred to your fresh SD card with nothing on it.

This build of Knulli is still in early access, so you need to head over to the developers Ko-Fi here and make a donation to get the image. It is extremely worth it though and it is always great to support local developers on their hard work improving these devices. Once you do that, you should have access to the RG28XX image.

Next, you need to unzip the file you just got. Now you just have to open your image flashing software of choice. Once you open this, select the file you just unzipped, select your SD card, and then press flash. This process took about 6 minutes or so when I did this.

Finally, plug the SD card back into your device and turn it on. You will see the Knulli logo for a few minutes as it downloads the CFW to your device, do not press any buttons! After a while, you will now be brought to your new home screen with some great music playing in the background.


Knulli is a developed fork of Batocera. You will notice it also uses Emulation Station as a frontend. It also uses some great and updated cores for RetroArch that should help improve some of your performance such as FBAlpha, melonDS, Virtual Jaguar, GenesisPlusGX_Wide, Beetle PCE, and more!

Upon turning my device on, I was flooded with flashbacks from my first retro handheld, the RG351V running EmuELEC. The interface looks so much more smooth with that EmulationStation frontend compared to the stock firmware. Pressing pause on the menu offers a ton of options for you to select game cores and various other helpful settings.

Knulli 2

Knulli Looking Fresh

Overall, I find this to be a great firmware to use for the RG28XX. It is impressive that this device just came out and there are already 2 great CFW options for it. This could be the best small horizontal device if the support like this keeps coming out. Make sure to donate to the Ko-Fi link and experience this for yourself!

Finally, you can order the RG28XX for yourself from either AliExpress or directly from Anbernic. It costs $47.99, but you will have to pay for shipping. The case is another $10 that you can add to your order as well for some extra protection. Keep an eye on the website and channel for comparisons, more reviews, and firmware news on the RG28XX!

What did you think of this article? Let us know in the comments below, and chat with us in our Discord!

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