RetroCompass
RetroCompass

TrimUI Model S — Firmware update

Quick answer

Button combo

Files menuselect TrimuiUpdateV*.zipA

Steps

  1. 1On a PC, download the latest TrimuiUpdateV*.zip from the TrimUI Model S firmware page.
  2. 2Format a microSD (TF) card as FAT32 and copy the TrimuiUpdateV*.zip file to the card root.
  3. 3Insert the card and power on the Model S, then open the on-device file browser.
  4. 4Highlight the TrimuiUpdateV*.zip update package and press A to start the update.
  5. 5Wait for the new menu to appear and the device to reboot; do not power off during the update.
Last verified: 2026-06-20Source: trimui.com

The TrimUI Model S updates from a normal FAT32 microSD card: copy the TrimuiUpdateV*.zip package to the card root, open the file browser on the device, highlight the package, and press A to flash it. The Linux base lives on internal NAND, so the SD card mainly carries the update file, your launcher and games. The latest stock release shown on the official firmware page is 0.108. After updating, a ROM refresh or factory recovery is sometimes recommended so menus rebuild cleanly.

FAQ

What file do I need for a Model S firmware update?
A package named TrimuiUpdateV*.zip from the official Model S firmware page. Keep it zipped and place it at the root of a FAT32 microSD card, then run it from the on-device Files browser with the A button.
Which card format does the update need?
FAT32. Format the microSD (TF) card as FAT32 and copy the TrimuiUpdateV*.zip to the root before opening it in the file browser.

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