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jamesarich merged 2 commits into from
Nov 10, 2026
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docs: add the 2.6.1 changelog entry and current release #104

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docs: add the 2.6.1 changelog entry and current release
jamesarich Nov 10, 2026
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docs: name what teardown clears in the 2.6.1 entry
jamesarich Nov 10, 2026
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2 changes: 1 addition & 1 deletion README.md
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Adafruit nRF52 bootloader with enhanced OTA DFU, forked for [Meshtastic](https://meshtastic.org) from [oltaco's bootloader](https://github.com/oltaco/Adafruit_nRF52_Bootloader_OTAFIX) and [Adafruit's](https://github.com/adafruit/Adafruit_nRF52_Bootloader). Formerly the OTAFIX bootloader. Several nRF52 Meshtastic devices ship with it, and the [Meshtastic Android app](https://github.com/meshtastic/Meshtastic-Android) can upgrade it in-app.

Current release: **OTAFIX 2.5** (tag `0.9.2-OTAFIX2.5`). `master` carries the unreleased **2.6.0**; later releases are tagged `x.y.z`. "2.6.0 and later" below means `master` and every release from 2.6.0. See [changelog.md](changelog.md).
Current release: **2.6.1**. Releases are tagged `x.y.z` from 2.6.0; earlier ones are `0.9.2-OTAFIX2.x`. See [changelog.md](changelog.md).
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## How this fits together

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4 changes: 4 additions & 0 deletions changelog.md
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from 0.6.2 down predates it and is upstream Adafruit history, kept for
provenance.

## 2.6.1

- Fixed the first application boot after a DFU stalling and ending in a watchdog reset about 90 s later on boards with an I2C OLED DFU screen. 2.6.0 left TWIM0 with the `LASTTX_STOP` short, the pin selects and the last transfer's events set when it jumped to the application, and the Arduino core's repeated-start transfers never finish with that short in place. `board_display_teardown()` now clears `SHORTS`, the events and `ERRORSRC`, and disconnects the pin selects. Measured on a WisMesh Pocket after a UF2 copy and after a BLE OTA.

## 2.6.0

- The project is renamed the Meshtastic nRF52 Bootloader (repo `meshtastic/nRF52_Bootloader`), and releases are tagged plain `x.y.z` from 2.6.0, continuing the OTAFIX numbering. Board-IDs, BLE names and asset file names are unchanged. The DFU banner on color-screen boards reads `meshtastic.org`.
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