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GammaOS Next Installation for Allwinner SD Card Devices

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TheGammaSqueeze edited this page Jul 30, 2026 · 4 revisions

Allwinner A133P SD Card Devices (TrimUI Smart Pro / MagicX Zero28)

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GammaOS Next for Allwinner A133P devices boots and runs entirely from a microSD card, so it leaves the device's internal stock firmware untouched. You simply flash the image to a card, insert it, and boot. To go back to stock, remove the card.

Prerequisites

  1. Patreon Password

    • If you are a Patreon supporter, obtain the GammaOS Next password from the Patreon post itself (https://www.patreon.com/GammaOS). The release is locked behind that password until it goes public in 60 days.

  2. 7-Zip

    • Install 7-Zip (or another archive tool capable of extracting split archives). You will need it to combine and extract the .7z.001 / .002 files, using the Patreon password.

  3. A quality microSD card

    • A minimum of a 32GB A2-spec microSD card is recommended.
    • Use cards with speeds similar to a SanDisk Extreme (A2 for gaming) or Samsung Pro Plus.
    • DO NOT USE AMAZON BASICS OR CHEAP BRANDS. These are unreliable and may cause poor performance or boot failures.

Recommended Card

Flash with PhoenixCard (Windows)

Use this method if you want the image to auto-expand to your card size.

  1. Download the relevant device image parts (ending in .001 and .002) from the release.
  2. Extract them with 7-Zip using the password from Patreon. This produces the flashable image.
  3. Flash using the attached PhoenixCard tool, using the following settings:

PhoenixCard settings

  1. Once PhoenixCard finishes, remove the card, insert it into the device, and power on.

First Boot

  1. Insert the flashed microSD card and power on the device.
  2. First boot takes longer (1 to 3 minutes) while Android sets up file systems and initial configuration. The screen may appear to hang on the boot logo, which is normal.
  3. Follow the on-screen prompts to complete initial setup.
  4. Once setup completes, you will land on the GammaOS Next home screen.

Troubleshooting Tips

  • If the device does not boot from the card:
    • Re-flash with PhoenixCard.
    • Verify the card is genuine and meets the A2 speed recommendation.
    • Make sure the download and extraction completed without errors.
  • To return to stock firmware, simply power off and remove the microSD card; the internal firmware is untouched.
  • For any errors or unexpected behavior, post details on the GammaOS Next GitHub Issues page.

Thank you for using GammaOS Next! For updates and support, join our Patreon.

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