wasp-os builds

Firmware for the PineTime smart watch: wasp-os, the watch operating system written in MicroPython.

Latest: 0.4-247-gb3c27a9

Built 2026-11-01 from commit b3c27a9 · releases.json

The first build on this site. Compared with wasp-os master, it has:

micropython.zipUpdate the firmware of a watch that runs wasp-os (wasptool ota)316 KiB
sha256 04dc0f1eca193f782a32adf3d3a187ff95aa70caacf4c621b1ddb9eac6be4270
reloader-mcuboot.zipInstall the wasp-os bootloader on a watch that runs InfiniTime302 KiB
sha256 bac422709e0e78c3a24faf5b74e535701399e58430eaff2b9532829411134fe6
reloader-factory.zipInstall the wasp-os bootloader on a watch with the factory firmware210 KiB
sha256 772b665cda349da830b6824a170cf99341cb4c2ac4f6893339c2eec2282ca85e
bootloader-daflasher.zipInstall the wasp-os bootloader with DaFlasher168 KiB
sha256 db0017f94739c3ff41cbcabb2c6281c6ca21d7ab40da4835ffe98b57cbdea230
bootloader.hexThe bootloader and SoftDevice, to flash with a debugger (SWD)467 KiB
sha256 abd0c1b58ae9c0cd68967b8993a50e70d9612e08d367368c0fc0097ebf1e178c

Update a watch that runs wasp-os

With wasptool, from a checkout of the source:

cd tools/wasptool
uv run wasptool ota micropython.zip

Your settings, alarms and step count are kept.

Install wasp-os for the first time

First install the wasp-os bootloader with one of the reloader files above, then the firmware. The installation guide explains each way.