Download a compatible MUI map ZIP from
Oxed's Map Tile Downloader.
Choose OSM Bright for current Pyxis compatibility.
Turn the T-Deck off, remove its microSD card, and insert the card into your computer.
Choose the downloaded ZIP below, enter a map name and pack ID, and wait for local validation.
Click Install and Enable, then choose the mounted SD-card root.
Safely eject the SD card, return it to the T-Deck, power it on, and open Maps.
Existing unrelated SD-card files are preserved. Map tiles are validated locally and are never uploaded.
Source profile: Coalition MUI OSM Bright user download.
Attribution: Map data (c) OpenStreetMap contributors — ODbL-1.0.
Compatible OSM Bright packs are enabled together. The newest pack takes priority where coverage overlaps.
Choose a ZIP to validate it locally. No tiles are uploaded.
Requirements
Browser: Chrome, Edge, or Opera (Web Serial API required)
Device: LilyGO T-Deck Plus (ESP32-S3, 8MB Flash)
Cable: USB-C data cable (not charge-only)
How It Works
1. Connect T-Deck via USB-C
2. Click "Flash Firmware" and select the serial port
3. Wait for the firmware to be written
Tip: By default, only the firmware is updated - settings and messages are preserved.
Check "Full install" for a clean wipe.