Builtin Apps:

• About: show system uptime, use FontManager
• Compile builtin apps to bytecode .mpy files to reduce build size by 60KiB and improve startup performance
• HowTo app: make import lvgl as lv explicit

Frameworks:

• AppManager: try .mpy after .py and use import instead of explicit compile
• AppManager: require explicit import lvgl for clarity
• FontManager: new framework that provides font listing, TTF support, emoji support
• InputManager: mark emulate_focus_obj(group,o) as deprecated in favor of lv.group_focus_obj(o)
• MposKeyboard: add support for typing a few basic emojis
• SharedPreferences: avoid writing default-only configs at boot and prune empty config dirs/files

OS:

• Add os.path functionality like in CPython
• c_mpos/quirc: fix compilation warnings
• Disable unused OS facilities (FreeRTOS internals, tracing, INFO logging, broken GIF, Pinyin IME, LVGL window, BMP) to reduce build size by 109KiB
• Simplify focusgroup handling
• Re-enable UART REPL again BUT add esp.uart_repl(False) functionality to disable/enable it at runtime
• Format internal storage if mounting fails instead of hanging (even if not empty)

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Merged pull requests

• Implement support for Freenove's ESP32-S3 display board by @Rohansi in #122

New Contributors

• @Rohansi made their first contribution in #122

Full Changelog: 0.10.0...0.11.0

Functionality should be identical, just with the latest lvgl_micropython dependency underneath.

OS:

• Synchronize with upstream https://github.com/lvgl-micropython/lvgl_micropython 14ad6ce to bring ESP-IDF: 5.4 to 5.5.1 and MicroPython: 1.25 to 1.27
• Split lvgl_micropython customizations into topic branches for easier rebasing: topic/fonts, topic/lv-conf, topic/platform, topic/error-handling

Full Changelog: 0.9.6...0.10.0

Builtin Apps:

• About: show correct next update partition instead of always using get_next_update()
• OSUpdate: restrict OTA update flip-flop target to ota_0/ota_1 instead of all ota_N partitions (via shared partition helper)

Frameworks:

• Add mpos.partitions.get_next_update_partition() helper that alternates between ota_0 and ota_1 only
• DownloadManager: add "redact" argument to replace sensitive info with REDACTED in log output
• SettingActivity: support slider UI for integer settings
• SettingActivity: show human-readable value instead of internally used option

Board Support:

• Fri3d 2026: access expander.analog as property instead of function

OS:

• Disable the repl on hardware uart for esp32s3 targets (USB serial still works)
• Remove big, rarely used font Montserrat 34, 40 and 48 to reduce build size by 218KiB, while apps can still upscale or load fonts at runtime

Autogenerated Changelog

• make expander analog method a property again by @bertouttier in #130
• disable the repl on hardware uart for esp32s3 targets by @bertouttier in #132
• add usb-device-midi from microptyhon-lib to the image by @bertouttier in #134
• Add a driver and demo app for the DJ add-on by @bertouttier in #133
• DownloadManager: add redact_url= kwarg to hide auth-bearing URLs in logs by @bitcoin3us in #136
• SettingsActivity: render ui_options label instead of raw pref value by @bitcoin3us in #137

Full Changelog: 0.9.5...0.9.6

Builtin Apps:

• Optimize PNGs to reduce build size by 8KiB

Frameworks:

• WebServer: tweak webREPL UI and serve gzipped HTML to reduce total build size by 60KiB

Board Support:

• Fri3d 2026: update CH32 firmware to 1.2.2 release
• Fri3d 2026: remove workarounds for CH32 firmware 1.2.1

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Full Changelog: 0.9.4...0.9.5

Board Support:

• Fri3d 2026: add CH32 LCD backlight setting
• Fri3d 2026: fix virgin CH32 coprocessor firmware installation

OS:

• Patch esp-idf for to workaround sporadic SD card slowness (espressif/esp-idf/issues/16909)

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Full Changelog: 0.9.3...0.9.4

Builtin Apps:

• AppStore: fallback to .zip file if no .mpk file found in filelist
• AppStore: fetch new long_description from BadgeHub details API
• Settings - Wi-Fi: don't print password on serial port

Frameworks:

• Add new GPSManager framework
• Add new IRManager framework
• Add new LoRaManager framework
• Add new DeviceManager framework
• Add mpos.ui.change_task_handler() function for improving IR timing accuracy
• AppearanceManager: fix set_light_mode() and set_primary_color()
• AppManager: support .mpk/.zip files with compression and a redundant top-level directory
• AppManager: export 'mpos' global to apps for convenience
• Camera activity: use QR symbol for QR decoding, tweak fonts
• LightsManager: allow changing number of LEDs after initialization
• SettingActivity: add allow_deselect option (default False) to radiobuttons
• SharedPreferences: don't print potentially sensitive values on serial port
• WebServer: add basic 'View Screen' functionality to view the device's display remotely

OS:

• aioREPL: use >>> prompt (for ViperIDE)
• Drawer menu: reload apps when Launch(er) is (re)started
• Export 'lv' and 'mpos' globals to aioREPL and apps for convenience
• Compress largest fonts to reduce build size by ~208KiB
• Rename font_montserrat_28_compressed to font_montserrat_28 for uniformity
• LilyGo T-Watch S3 Plus: add support for IR Remote app TX
• LilyGo T-Watch S3 Plus: add support for UART GPS
• Fri3d 2024: add support for IR remote app (RX only)
• Fri3d 2026: add CH32 coprocessor firmware handling (credit @bertouttier)
• Fri3d 2026: add CH32 indev driver (credit @bertouttier)
• Fri3d 2026: add calibrated battery voltage measurements using CH32

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Autogenerated release notes

• Fix AppearanceManager.set_light_mode / set_primary_color using non-existent prefs.set_string by @bitcoin3us in #120
• SharedPreferences: don't log full prefs dict by @bitcoin3us in #123
• Settings → Wi-Fi: redact password from serial/REPL logs by @bitcoin3us in #124
• SettingActivity: keep exactly one radio option selected by @bitcoin3us in #125
• add badge 2026 expander indev by @bertouttier in #100

Full Changelog: 0.9.2...0.9.3

Builtin Apps:

• Settings: new Audio subsection to choose default output and input device, for boards with multiple audio devices

Frameworks:

• Activity: add appFullName property
• AudioManager: load and apply configured default_output and default_input devices
• AudioManager: fix final 1-2 seconds of WAV files not being played
• AudioManager: add support for PDM microphones
• AudioManager: fix 24 and 32 bits per sample WAV support
• SensorManager: add BMA423 IMU support
• TimeZone: set Real Time Clock if present

OS:

• Fix lvgl_micropython UI hang when lv.event_handler() throws exception from timers or callbacks
• Fix notification bar hiding after swipe up in Launcher apps
• Increase default heapsize from 8MB to 16MB on desktop to fix sporadic segfault
• Fri3d 2026: don't provide unnecessary SCLK/BCLK to CJC4334 DAC
• LilyGo T-Watch S3 Plus: fix power button sporadically becoming unresponsive
• LilyGo T-Watch S3 Plus: add battery charge level support
• LilyGo T-Watch S3 Plus: add IMU accelerometer support so IMU app works
• LilyGo T-Watch S3 Plus: enable audio input (PDM microphone) and output (I2S speaker)
• LilyGo T-Watch S3 Plus: enable Real Time Clock to keep time when powered off
• LilyGo T-Watch S3 Plus: power down/up display and touch screen upon power button press

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Autogenerated release notes

• Add automatic WiFi reconnection when connection is lost by @bitcoin3us in #115
• bugfix "unphone" target in build_mpos.sh by @jedie in #117

Full Changelog: 0.9.1...0.9.2

Builtin Apps:

• AppStore: use BadgeHub.eu filter mpos_api_0 instead of device-specific hardware ID
• HowTo: add padding
• Settings: add Number Format setting

Frameworks:

• Add new NumberFormat framework for decimal and thousands separators
• DownloadManager: add connection timeout to DownloadManager session.get()

OS:

• New board support: LilyGo T-HMI
• New board support: M5Stack Core2
• LilyGo T-Watch S3 Plus: initialize Power Management Unit at startup
• LilyGo T-Watch S3 Plus: power button short press for display backlight on/off, long press for power down
• Add driver for LoRa SX1262 with lvgl_micropython-style (= split Bus/Device) hardware SPI
• Add drivers for LoRa SX126X with SoftSPI (and default MicroPython hardware SPI)
• Add esp32-component-rvswd and MicroPython bindings to flash WCH's CH32 microcontrollers
• Add glyphs to fonts: diacritics 0x7F-0xFF, Bitcoin symbol ₿ 0x20BF, italic satoshi symbol 丯 0x4E2F and regular satoshi symbol 丰 0x4E30
• Add LVGL symbols to fonts: 0xf002,0xf004,0xf005,0xf00e,0xf010,0xf029,0xf030 for search, heart, star, search-plus, search-minus, qrcode, camera
• Add LVGL symbols to fonts: 0xf15a,0xf164,0xf165,0xf1e0 for btc (without circle), thumbs-up, thumbs-down, share-alt
• Add LVGL symbols to fonts: 0xf2ea,0xf379,0xf58f for undo-alt, bitcoin (in circle), headphones-alt
• Improve handling of 'mpos.main' errors
• Fix empty black window issue on macOS desktop
• Fix macOS/unix desktop build with newer Clang (17+)

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Autogenerated release notes

• New App: "ESPNowChat" simple chat app between devices by @jedie in #86
• Add support for LilyGo T-HMI board and initialize display and battery… by @Revers-BR in #90
• feat: add M5Stack Core2 board support by @imliubo in #91
• Add international number format setting by @bitcoin3us in #94
• integrate esp32-component-rvswd and add bindings by @bertouttier in #92
• Fix DownloadManager hanging on stalled connections by @bitcoin3us in #98
• Fix run_desktop.sh greedy sed regex eating other JSON keys by @bitcoin3us in #104
• Fix DownloadManager timeout kwarg compatibility with desktop aiohttp by @bitcoin3us in #107
• Check and fix app manifest files by @jedie in #105
• Fix macOS/unix desktop build with newer Clang (17+) by @bitcoin3us in #103
• Add EditorConfig and cleanup shell scripts by @jedie in #113
• Add "esp32-small" build target by @jedie in #111
• Handle "mpos.main" errors, wait and reset by @jedie in #109

New Contributors

• @Revers-BR made their first contribution in #90
• @imliubo made their first contribution in #91

Full Changelog: 0.9.0...0.9.1

Builtin Apps:

• About: show netmask separately, make labels focusable
• AppStore: update BadgeHub.eu URL
• HowTo: new onboarding app with auto-start handling to explain controls
• Settings: add sub-groups of setings as separate apps, including WiFi app
• Settings: add Hotspot sub-group (SSID, password, security)
• Settings: add WebServer sub-group (autostart, port, password)
• Launcher: ignore launchers and MPOS settings (except WiFi)

Frameworks:

• Audio streams: WAV playback/recording improvements (duration/progress, hardware volume control)
• AudioManager: registry/session model, multi-speaker/mic routing, ADC-based mic (adc_mic)
• DownloadManager: explicit certificate handling
• InputManager: pointer detection helpers and board registrations
• SensorManager: refactor to IMU drivers with magnetometer support and desktop IIO fallback
• SharedPreferences: fix None handling
• WebServer: new framework with Linux/macOS fixes and no background thread
• WifiService: hotspot support, IP address helpers, simplified connect/auto-connect
• Websocket library: renamed to uaiowebsocket to avoid conflicts

OS:

• ESP32 boards: bundle WebREPL (not started by default) to offer remote MicroPython shell over the network, accessible through webbrowser - see video demo
• New board support: LilyGo T-Display-S3 (physical and emulated by QEMU)
• New board support: LilyGo T-Watch S3 Plus
• New board support: M5Stack Fire
• New board support: ODroid Go
• New board support: unPhone 9
• Fri3d 2024/2026 updates: display reset support using CH32 microcontroller, communicator/expander drivers
• ADC microphone C module and tests
• Build system: switch to static builds for desktop systems to bundle LIBC and fix LIBC version issue
• Build system: add linux-arm64 and macos-intel GitHub workflows to support more precompiled binaries
• Add FreeRTOS module for low-level ESP32 functions
• Add --optimize-size build flag to reduce internal flash storage usage

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com
• As the API isn't frozen yet, if an app has an issue after the upgrade, then just update it using the AppStore

Autogenerated release notes

• Use a dot-whitelist by @jedie in #36
• Support ODROID-GO by @jedie in #35
• Add initial support for M5Stack-Fire board by @ancebfer in #32
• Clear battery cache in ShowBattery app by @jedie in #37
• Add simple calendar application by @pavelmachek in #38
• Enhance ShowBattery App by @jedie in #39
• Updates for ODROID-GO by @jedie in #40
• Update board/m5stack_fire.py by @jedie in #43
• WIP: New app: "Scan Bluetooth" by @jedie in #58
• Add MPU6886 driver (tested with M5Stack FIRE) by @jedie in #56
• Clean up existing install/symlink before extracting .mpk by @bitcoin3us in #55
• Fix EEXIST errors in zipfile.py during extraction by @bitcoin3us in #54
• Odroid-Go: Unmute+Mute buzzer before/after Playback by @jedie in #52
• imu: Allow access to iio on Linux by @pavelmachek in #45
• waveshare_esp32_s3_touch_lcd_2: Fix soft reset by @jedie in #68
• Fix MPU6886 X-Axis by @jedie in #67
• columns: simple falling-blocks game by @pavelmachek in #63
• weather: start simple weather application by @pavelmachek in #62
• compass: Add an application for magnetometer / accelerometer debugging by @pavelmachek in #61
• magn: Start magnetometer support by @pavelmachek in #60
• Enhance ScanBluetooth app by @jedie in #72
• scan_bluetooth: Display "last seen in sec." and fix timeout by @jedie in #73
• cellular: simple cellular-network example by @pavelmachek in #80
• floodit: simple game by @pavelmachek in #79
• navstar: Simple navigation application by @pavelmachek in #77
• gyro: add gyroscope test/display application by @pavelmachek in #76
• weather: add forecasts, switch to download manager by @pavelmachek in #75
• Add support for unPhone 9 by @jedie in #74
• add a driver for the 2024 and 2026 communicator by @bertouttier in #82
• add fri3d badge 2026 expander driver by @bertouttier in #81

New Contributors

• @jedie made their first contribution in #36
• @ancebfer made their first contribution in #32
• @bitcoin3us made their first contribution in #55
• @bertouttier made their first contribution in #82

Full diff: 0.8.0...0.9.0

Builtin Apps:

• About: use logger framework
• AppStore: mark BadgeHub backend as 'beta'
• Launcher: improve layout on different screen width sizes
• OSUpdate: remove 'force update' checkbox not in favor of varying button labels

Frameworks:

• SDCard: add support for SDIO/SD/MMC mode
• CameraManager and CameraActivity: work fully camera-agnostic

OS:

• Add board support: Makerfabs MaTouch ESP32-S3 SPI IPS 2.8' with Camera OV3660
• Scale MicroPythonOS boot logo down if necessary
• Don't show battery icon if battery is not supported
• Move logging.py to subdirectory

What to do:

• To update, open the OSUpdate app and click "Update OS"
• To do a fresh install, use the webinstaller at install.MicroPythonOS.com