The PowKiddy A20 is an Android-based handheld that offers significant power for its price but is often held back by its "clunky" stock firmware. Unlike Linux-based consoles that use dedicated Custom Firmware (CFW) like ArkOS or JELOS, the A20 relies on Android optimization and launcher customization to reach its full potential. Why Customize Your PowKiddy A20?
The stock "PowKiddy Box" software is often criticized for poor translations, "shady" game markets, and rigid button mapping. By shifting to a custom Android setup, you can:
Improve Performance: Optimize the Amlogic S905D3 chip for better N64, Dreamcast, and PSP emulation.
Fix Button Mapping: Overcome the "wacky" default layouts that often require shoulder buttons for arcade games.
Clean UI: Replace the cluttered stock interface with a professional-looking frontend like Launchbox or Square Home. Step 1: Setting Up the Android Foundation
Because the A20 runs Android 9, your "custom firmware" experience starts by bypassing the stock frontend and using the underlying Android OS.
Adopt SD Card as Internal Storage: The A20 only has 8GB of internal storage. Use a file browser like FX File Explorer to format a high-quality microSD card as "internal storage" so you can install large apps and download metadata.
Sideload Necessary Apps: Since the Google Play Store often doesn't work on stock A20 builds, you will need to download APKs for emulators and frontends manually.
Root Access: Many A20 units ship with root access enabled in the "user debug" firmware, making it easier to use advanced mapping tools. Step 2: Choosing a New Frontend
The frontend is what makes the device feel like a console rather than a phone. powkiddy a20 custom firmware
Launchbox for Android: Highly recommended by the community for the A20. It handles box art and metadata well, though it can be resource-heavy.
Square Home: A lightweight alternative that provides a tile-based UI similar to Windows Phone, which works well on the A20's 3.5-inch 640x480 screen.
DIG: Some users find DIG easier to set up for retro collections, though compatibility can vary with the A20’s hardware buttons. Step 3: Optimization & Emulator Setup
To get the best out of the S905D3 CPU, use standalone emulators rather than the ones built into the stock software. Recommended Emulator Performance Notes N64 Mupen64+FZ
Excellent performance; allows remapping face buttons for the A20’s 6-button layout. PSP PPSSPP
Very capable on this chip; most games run at 1x or 2x resolution. Dreamcast Redream
Boots well, but watch out for button registration issues in the settings. RetroArch 32-bit Version
Best for NES, SNES, and Genesis to ensure maximum compatibility with the firmware. Step 4: Handling Hardware Limitations
Heat & Screen Distortion: Long sessions on intensive systems (N64/PSP) can cause the bottom of the screen to distort due to processor heat. If this happens, tapping the sleep button for a few seconds usually resets the display. The PowKiddy A20 is an Android-based handheld that
Button Mapping: The A20's buttons are often mapped to "F keys" by default. If standard Android mappers fail, use the specific mapping menus within each emulator (like Mupen64+) rather than a system-wide tool. Summary of Recommended Tweaks
Replace the SD Card: Stock cards are prone to corruption. Use a reputable brand like SanDisk or Samsung.
Use Standalone Apps: Avoid the pre-installed "Game Market" for downloads.
Manage Power: Expect 3–5 hours of battery life depending on the system being emulated. If you'd like, I can help you find: Direct download links for the best standalone emulators.
A guide on how to map the 6 face buttons specifically for N64 games.
The latest community Android updates or "Hotfixes" for the A20. How would you like to optimize your A20 first? A New Portrait Handheld with Power! - PowKiddy A20 Review
Unlike devices like the Miyoo Mini (which has the famous "OnionOS"), the A20 does not have one single, all-encompassing CFW that dominates the scene. Instead, the landscape is defined by specific build releases and optimized image files shared on forums like Reddit (r/SBCGaming) and Discord.
The most notable improvements found in current custom images include:
If you have the Android 4.4 version of the A20 (not the Linux version), you can side-load front-ends: Note: The A311D stock GPU is 600Mhz
Let’s look at real-world improvements. (Tested on a standard Powkiddy A20 with a 1.3GHz RK3128, 512MB RAM).
| Console / Game | Stock Firmware | RetroOZ (CFW) | ArkOS (CFW) | | :--- | :--- | :--- | :--- | | PS1 - Crash Bandicoot | 40-50 FPS (audio crackle) | 60 FPS (Full speed) | 59-60 FPS | | N64 - Super Mario 64 | 15-25 FPS (unplayable) | 25-30 FPS (playable with frameskip) | 28-30 FPS (smoother) | | GBA - Metroid Fusion | 55 FPS (stuttering) | 60 FPS (Perfect) | 60 FPS | | Dreamcast - Sonic Adv | 10 FPS (slideshow) | 15-20 FPS (proof of concept) | 18-22 FPS | | Boot Time | 45 seconds | 28 seconds | 18 seconds |
As the table shows, CFW turns PS1 from a painful experience into a flawless one and makes GBA games run with zero frame drops.
Navigate to /storage/.config/emuelec/configs/emuelec.conf.
Add the following lines:
emuelec.gpu.freq=800
emuelec.cpu.governor=performance
emuelec.fan.speed=aggressive
Note: The A311D stock GPU is 600Mhz. 800Mhz is safe with the CFW fan curve.
By: Retro Handhelds Daily
The Powkiddy A20 is something of an enigma in the retro gaming community. Released with little fanfare, this clamshell device—powered by the aging Rockchip RK3128 SoC—tried to carve out a niche as a budget Nintendo DS emulation machine.
But let’s be honest: the stock firmware that ships with the Powkiddy A20 is sluggish, buggy, and lacks the polish of devices like the Anbernic RG351 series or the Retroid Pocket 2.
The big question on every owner’s mind is: Is there custom firmware (CFW) available for the Powkiddy A20?