GBA DS Style — A Nintendo DS-Inspired Custom Kernel for EZ-Flash Omega & Omega DE

FrankieT19 · Mar 22, 2026

Hi Game Boy fans!

I present to you DS Style—a custom kernel for the EZ-Flash Omega and Omega Definitive Edition to celebrate the GBA's 25th anniversary

. This is a complete overhaul of the menu system for the flashcarts, introducing many new features and a fresh new look inspired by the Nintendo DS's operating system.

Hope you enjoy

Core experience	Nintendo DS inspired UI Faithful animated start screen Modern front-end with two view modes Horizontal and vertical carousels UI refinements and QoL additions providing a polished experience throughout
Appearance & artwork	All 16 colour options from the DS Dark mode Title screen and box art thumbnails Easily add alternative artwork with the DS Style Thumbnail Scraper Local or libretro artwork packs Supports every game, file or folder
Start screen	Set your favourite games and launch them from the start screen Launch your last played games quickly from the start screen
Boot & launch options	Bypass the launch menu by setting your preferred boot mode Optionally boot to your last played game Quick start hotkey
Personalisation & sound	Toggleable UI sound effects Set a username to be displayed in the top left Easily customise with the DS Style Customiser!
Kernel features	Includes all features from the Simple theme PogoShell plugin support Save backups Retains all functionality and features of the official kernel
Languages	English (UK) English (US) Spanish French Portuguese German Turkish Italian Dutch Swedish Finnish Chinese

For all features, guidance, and instructions, please refer to the user guide linked at the bottom of the post.

*DS Style comes pre-packed with thumbnail sets, the tools above are for further customisation.

Video showcase and installation + customisation tutorial

User Guide

DS Style for the Omega Definitive Edition

DS Style for the original Omega

DS Style Customiser

DS Style Thumbnail Scraper

DS Style Omega Definitive Edition Source

DS Style original Omega Source

DS Style Customiser Source

DS Style Thumbnail Scraper Source

Buy me a coffee

Lolight4 · Mar 22, 2026

So I flashed this onto my EZFlash Omega (non-DE) not noticing it was for the DE and it *seems* to be working fine?
Kinda interesting, hopefully I don't run into problems in the future x)
Thanks for the cool skins!

Edit: Okay yeah nevermind, it doesn't allow me to save properly unfortunatelly

Is there any chance we could have a non-DE version of these skins?
In particular I was really looking forward to using an Orange or Teal one

FrankieT19 · Mar 22, 2026

Lolight4 said:
So I flashed this onto my EZFlash Omega (non-DE) not noticing it was for the DE and it *seems* to be working fine?
Kinda interesting, hopefully I don't run into problems in the future x)
Thanks for the cool skins!

Edit: Okay yeah nevermind, it doesn't allow me to save properly unfortunatelly
Is there any chance we could have a non-DE version of these skins?
In particular I was really looking forward to using an Orange or Teal one

Just made you some non-DE versions! They've been added to the original post. Hope you like them

Lolight4 · Mar 23, 2026

FrankieT19 said:
Just made you some non-DE versions! They've been added to the original post. Hope you like them

You are absolutely the best, thank you so much for taking the time to do this!

FrankieT19 · Mar 23, 2026

Lolight4 said:
You are absolutely the best, thank you so much for taking the time to do this!

You're very welcome

Merkin · Mar 23, 2026

Just wondering is this based off of the newest build of Simple and SimpleDE that was just released?

FrankieT19 · Mar 23, 2026

Merkin said:
Just wondering is this based off of the newest build of Simple and SimpleDE that was just released?

Yes it is! It was rather lucky timing.

FrankieT19 · Mar 24, 2026

Update 3.0 Brings a new theme switcher feature to 'DS Style'. Now you can swap colours on the go, no PC needed!

MakiRoll · Mar 24, 2026

Maybe I'm missing something ...?

I installed it to a new EZ Flash Omega.

I see the abse DS theme after boot, but there is no THEMES directory visible in the SD card menu (despite there being a dir) and also the common simple light functionality such as the extended menu when pressing select are not available.

FrankieT19 · Mar 24, 2026

MakiRoll said:
Maybe I'm missing something ...?

I installed it to a new EZ Flash Omega.

I see the abse DS theme after boot, but there is no THEMES directory visible in the SD card menu (despite there being a dir) and also the common simple light functionality such as the extended menu when pressing select are not available.

Try making a folder called something else, putting the themes inside it loading that up. If you can see that folder, delete the original THEMES folder and rename the new one to THEMES and it should display. Maybe the folder I uploaded was broken in some way, I'll see if I can fix it and will re-upload a working THEMES folder. Sorry about that.

Also, regarding the menu when pressing select, I believe this isn't currently working on the latest SimpleDE release that this theme is built on, rather than this theme itself being the issue. Does the select menu work for you on the latest SimpleDE version (released a few days ago)?

Edit: I've updated the file, the THEMES folder might work now

Edit2: Thank you MakiRoll for clarifying that the Select menu options are found within the second settings page on the Omega Definitive Edition

MakiRoll · Mar 24, 2026

FrankieT19 said:
Try making a folder called something else, putting the themes inside it loading that up. If you can see that folder, delete the original THEMES folder and rename the new one to THEMES and it should display. Maybe the folder I uploaded was broken in some way, I'll see if I can fix it and will re-upload a working THEMES folder. Sorry about that.

Also, regarding the menu when pressing select, I believe this isn't currently working on the latest SimpleDE release that this theme is built on, rather than this theme itself being the issue. Does the select menu work for you on the latest SimpleDE version (released a few days ago)?

Edit: I've updated the file, it might work now

Okay, this is interesting:
So with the latest SimpleDE (I didnt try any other version on this new Omega DE) the select button also only toggles the box art on/off.

I created a new folder called THEMES2 and copied all the THEME bin files in there but pressing A just quickly flashes the screenm, then nothing happens.

FrankieT19 · Mar 24, 2026

MakiRoll said:
Okay, this is interesting:
So with the latest SimpleDE (I didnt try any other version on this new Omega DE) the select button also only toggles the box art on/off.

I created a new folder called THEMES2 and copied all the THEME bin files in there but pressing A just quickly flashes the screenm, then nothing happens.

Yes the theme picker functionality expects the themes to be in the THEMES folder to prevent accidentally loading random bin files. If you rename the THEMES2 folder to THEMES (delete the original THEMES folder first) hopefully it will show and function correctly. I think the original folder corrupted somehow.

MakiRoll · Mar 24, 2026

FrankieT19 said:
Yes the theme picker functionality expects the themes to be in the THEMES folder to prevent accidentally loading random bin files. If you rename the THEMES2 folder to THEMES (delete the original THEMES folder first) hopefully it will show and function correctly. I think the original folder corrupted somehow.

Ah I see.

I tried it with your updated zip. No joy.

I then created the folder myself, putting in all the bins directly. Then the EZ flash woulnd't boot, hanging at the weird looking Nintendo log after the EZ-Flash logo.

Then I re-flashed your kernel.bin after a restart and now the folder is showing as expected and applying themes works as intended. However, select still only toggles the box art for me. Really weird.

Post automatically merged: Mar 24, 2026

There is the solution:

Hacking Post in thread 'New Theme for EZ-Flash Omega!'

Oct 18, 2025

Hutch3G said:
Hello Sterophonix, first of all thank you so much for all your hard work. I've been using Simple DE the past few years. I wanted to ask for support as I had a doubt while reading the options.

I use an Omega DE, I just thought to check out the user manual, because i saw in the settings it said "Select: More options", however it doesn't do anything. I am on this latest release, but this menu (which you show a screenshot of in your website) just does not exist on Simple DE. Pressing select only toggles thumbnails on and off and that's it. Is this intentional or is it an oversight?
Thanks...

Select is not supposed to do anything on the Omega DE. It is all in the DE specific menu tab.

So thank you for the cool theme and the support.

hippy dave · Mar 24, 2026

Will try this out on my non-DE sometime, thanks! I like that you built in theme switching on the fly, as I'd probably want to change colours depending which console I had the Omega in. Great job!

FrankieT19 · Mar 24, 2026

hippy dave said:
Will try this out on my non-DE sometime, thanks! I like that you built in theme switching on the fly, as I'd probably want to change colours depending which console I had the Omega in. Great job!

Thanks! Hope you enjoy it.

Post automatically merged: Mar 24, 2026

Update v3.1 Fixed the THEMES folder not showing - I believe Microsoft OneDrive was changing my file system format
If someone could confirm it's working on their end I would greatly appreciate it <3

MakiRoll · Mar 24, 2026

FrankieT19 said:
Thanks! Hope you enjoy it.

Post automatically merged: Mar 24, 2026

Update v3.1 Fixed the THEMES folder not showing - I believe Microsoft OneDrive was changing my file system format
If someone could confirm it's working on their end I would greatly appreciate it <3

Maybe I had the wrong zip downloaded but I think it did not work for me previously.

FrankieT19 · Mar 24, 2026

MakiRoll said:
Maybe I had the wrong zip downloaded but I think it did not work for me previously.

The latest file shares the same version number as one I uploaded a few hours ago as it is for the same bug. I uploaded the new one 10 minutes ago, is that the one you tried?

MakiRoll · Mar 24, 2026

I tried it a lot earlier (when we were originally discussion the issue), I was under the imporession that you had updated it earlier already.

FrankieT19 · Mar 24, 2026

MakiRoll said:
I tried it a lot earlier (when we were originally discussion the issue), I was under the imporession that you had updated it earlier already.

Apologies for the confusion with the version numbers.

Update v3.2 Fixed incorrect information in the Help menu regarding the Select button's function for the Definitive Edition

jomaper · Mar 25, 2026

Looks amazing, thanks!

GBA DS Style — A Nintendo DS-Inspired Custom Kernel for EZ-Flash Omega & Omega DE

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