GammaOS Pico Turns the Konkr Pocket Advance Into an Instant-On Retro Handheld

Punks, if you own an Ayaneo Konkr Pocket Advance, it just got a second personality. GammaOS Pico 1.0.0 is a free, offline retro OS from TheGammaSqueeze that lives in the handheld’s bootloader and runs straight from the microSD card, with the console’s Android left exactly where it was.

The name will ring a bell for anyone who has flashed an Anbernic or Retroid. GammaOS has been rescuing Android handhelds for years, and this time it is free on GitHub with no Patreon wall in front of it.

What’s new

Pico is not a full Android build. It is a small, purpose-made menu and a set of emulators that boot in place of Android when the Pico card is in. According to the project page, you go from power on to the Game Boy Advance boot logo in about two and a half seconds. Pull the card, or pick Boot to Android from the menu, and the stock system starts as normal.

Eight systems are supported at launch:

System	Emulator
Game Boy Advance	armGBA (default), gpSP
Game Boy and Game Boy Color	gambatte
Super Nintendo	snes9x
Mega Drive / Genesis, Master System, Game Gear, SG-1000	Genesis Plus GX

The feature list is longer than you might expect from something this small:

• Hold Power mid-game to save your place and switch off; the next power on drops you straight back in.
• The screen is retimed to each unit’s real refresh rate, with frame pacing and run-ahead to cut lag.
• Black frame insertion at 25, 50 or 75 percent for crisper motion.
• Rewind, fast forward, save states, screen filters and colour correction.
• The handheld’s gyro and rumble motor stand in for tilt and rumble cartridges, so WarioWare: Twisted!, Kirby Tilt ‘n’ Tumble and Yoshi Topsy-Turvy work as intended.
• Box art, play time, search and A to Z scrolling, and it reads ES-DE and EmuDeck folder layouts.

There is also a desktop companion, GammaOS Pico Tool, for Windows, macOS and Linux, which sets up the card, scrapes box art and backs up the console’s bootloader.

Read the warnings first

This one comes with proper caveats, and the developer is upfront about them. Installing Pico replaces the Konkr Pocket Advance’s bootloader using SP Flash Tool v5 on Windows or mtkclient on Linux. The project page calls it experimental, with no warranty, and says flashing a bootloader can leave a console that will not start.

Android over-the-air updates may also stop working, or an update may overwrite Pico, so the advice is to update Android to the latest version before you install. And it is offline in every sense: no account, no store, no network, and no support channel. Feature requests and pull requests are not accepted. In the developer’s own words: “Use it as it is, or not at all.”

No commercial games or BIOS files are included. The card package ships with a handful of freely licensed homebrew demo games so you can try it straight away, and everything else is down to you and your own collection.

As Retro Handhelds points out, the obvious gap is the NES, which is a little odd on a machine built around nostalgia. Hopefully it turns up in a later build.

Our take

The Konkr Pocket Advance is Ayaneo’s love letter to the Game Boy Advance, the next step on from the Konkr Pocket Fit we covered last year, and Pico is the closest it has come to feeling like one: switch on, play, switch off. Black frame insertion and gyro support on a GBA-shaped handheld is a lovely touch. If you would rather keep Android for everything and just want GBA games on a second screen, GBA DS 1.5 is worth a look too. Just take the bootloader warning seriously before you flash anything.

Anyone brave enough to flash theirs yet?