SigurdOS T-Deck

Capabilities

Node role

Features

• Standalone direct and channel messaging
• Touch, trackball and keyboard controls
• Maps, GPS and signal diagnostics
• Wi-Fi and GitHub OTA updates

1. v0.1.42-RC4 # Latest Pre-release 7 days ago · 2026-06-20 21:09 UTC

   View release ↗

   SigurdOS T-Deck Firmware — beta-0.1.42-RC4

   Flash with esptool

   # Full flash (first install):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 write_flash 0x0 firmware-merged.bin
   
   # App update (keep settings):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 \
     write_flash 0x10000 firmware.bin
   

   Web Flasher

   Use the manifest at webflasher/manifest.json with esptool.js.

   File	Use
   firmware.bin	App only (flash at 0x10000)
   firmware-merged.bin	Full flash (flash at 0x0)
   SigurdOS-tdeck-launcher.bin	For bmorcelli/Launcher install (same bytes as merged)

   What's Changed

   • fix: scope radio param force-override to dedicated debug flag by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/626
   • [codex] docs: remove completed roadmap items by @gadgethd in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/638
   • fix: bug sweep — display init, GPS baud timeout, DM name buffer, channel routing, save counter overflow by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/641
   • [codex] ci: serialize release asset uploads by @gadgethd in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/640
   • T13: SD lazy retry — single attempt at boot, retry on demand by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/642
   • fix: QIO→DIO flash mode for PSRAM compatibility + CI smoke matrix expansion by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/662
   • fix: HAL — battery Li-ion lookup, trackball LEFT deadtime, BLE state ordering by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/664
   • fix: mesh — static sender buffer race + path discovery race by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/665
   • fix: UI — chart data, nav stack, trace timer, brightness, search state by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/666
   • fix: reset cache_clock on map reinit (#661) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/667
   • fix: SPIFFS flush before device reset + NVS write dedup in radio setup by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/663
   • fix: roomserver double-send + UTF-8 emoji truncation by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/668
   • fix: free outgoing screen on navigation to stop LVGL pool leak / freeze (#670) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/671
   • fix: theme change refreshes current screen immediately (#654) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/669
   • fix: null guard getRTCClock() in updateSignalSample (fixes #675) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/676
   • docs: correct HARDWARE.md inaccuracies and fix touch comment (fixes #679) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/680
   • fix: add missing P_LORA_* build flags for MeshCore visibility (fixes #677) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/681
   • chore: update MeshCore submodule to latest dev (fixes #678) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/682
   • ci: add debug and remote_test_radio builds to PR matrix by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/684
   • fix: restore Settings back navigation by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/674
   • fix: resolve Launcher warm-handoff freeze + settings crash by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/685
   • fix: chat channel-state corruption + harden WiFi OTA auth by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/689
   • fix: SPIFFS warning spam (#683) + navigation hang (#672) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/690

   Full Changelog: https://github.com/ …

2. v0.1.41.1 # Pre-release 13 days ago · 2026-06-14 22:52 UTC

   View release ↗

   SigurdOS T-Deck Firmware — beta-0.1.41.1

   Flash with esptool

   # Full flash (first install):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 write_flash 0x0 firmware-merged.bin
   
   # App update (keep settings):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 \
     write_flash 0x10000 firmware.bin
   

   Web Flasher

   Use the manifest at webflasher/manifest.json with esptool.js.

   File	Use
   firmware.bin	App only (flash at 0x10000)
   firmware-merged.bin	Full flash (flash at 0x0)
   SigurdOS-tdeck-launcher.bin	For bmorcelli/Launcher install (same bytes as merged)

   Full Changelog: https://github.com/hermes-gadget/SigurdOS-tdeck/compare/beta-0.1.41...beta-0.1.41.1

3. v0.1.41 # Pre-release 14 days ago · 2026-06-13 13:03 UTC

   View release ↗

   SigurdOS T-Deck Firmware — beta-0.1.41

   Flash with esptool

   # Full flash (first install):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 write_flash 0x0 firmware-merged.bin
   
   # App update (keep settings):
   esptool.py --chip esp32s3 --port /dev/ttyACM0 \
     write_flash 0x10000 firmware.bin
   

   Web Flasher

   Use the manifest at webflasher/manifest.json with esptool.js.

   File	Use
   firmware.bin	App only (flash at 0x10000)
   firmware-merged.bin	Full flash (flash at 0x0)
   SigurdOS-tdeck-launcher.bin	For bmorcelli/Launcher install (same bytes as merged)

   What's Changed

   • Fix fresh-install GPS defaults in prefs load by @n30nex in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/517
   • refactor: split 1707-line sigurd_mesh_v2.h into declaration header + .cpp implementation (#521) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/532
   • fix: replace delay(0) with delay(1) in tile scan loops to feed TWDT (#518) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/525
   • fix: apply consistent NVS getString return-value guards to all string fields (#523) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/529
   • fix: stop onAnonDataRecv from mutating packet buffer in-place; increase anon name entropy (#522, #524) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/527
   • maintainability: replace unsafe strcpy with strncpy; replace hardcoded buffer sizes with sizeof (#520) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/528
   • feat: multibyte path hash support (1/2/3-byte adverts & messages) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/533
   • fix: correct test module table syntax in README.md by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/534
   • docs: update README screenshots by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/535
   • feat: duration-limited auto-advert (24h/72h/168h) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/537
   • fix: auto-advert sends one advert per interval (24h/72h/168h), not every 30min by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/538
   • fix: forward channel messages to logged-in room servers by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/539
   • fix: correct guest permission display and hide admin-only controls by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/540
   • fix: use INPUT_PULLUP for trackball center click GPIO 0 (#549) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/554
   • fix: zero-initialize NVS string buffer in repeater password functions (#548) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/555
   • fix: increase SignalSample key from 2 to 4 bytes to prevent RSSI/SNR aliasing (#544) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/556
   • fix: stack buffer overflow in DM name formatting (#543) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/553
   • fix: add nvs_flash_erase() to factory reset for complete NVS wipe (#551) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/557
   • fix: block trackball events during PIN entry to prevent back-swipe bypass (#541) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/558
   • fix: stop I2C clock tug-of-war between touch (GT911) and keyboard (#547) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/559
   • docs: add OUT OF DATE warning to TELEMETRY_ARCHITECTURE.md (#550) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/560
   • fix: clamp append_channel_message capacity to actual buffer size to prevent OOB write (#542) by @hermes-gadget in https://github.com/hermes-gadget/SigurdOS-tdeck/pull/561

   …