---
title: "Pebble SDK 3.9-beta8 - Changelog"
canonical_url: https://developer.repebble.com/sdk/changelogs/3.9-beta8/
last_updated: 2025-02-25
sdk_version: 4.33.1
---
# Pebble SDK 3.9-beta8 - Changelog

Source: https://developer.repebble.com/sdk/changelogs/3.9-beta8/

_Release Date: February 1 2016_

This is a pre-release SDK, containing a preview of the new Pebble Health API.

**Important note** : We have changed the values of [`HealthServiceAccessibilityMask`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#HealthServiceAccessibilityMask "HealthServiceAccessibilityMask"). This is not a binary compatible change, so you _must_ recompile watchfaces that use [`health_service_metric_accessible`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#health_service_metric_accessible "health\_service\_metric\_accessible") or [`health_service_any_activity_accessible`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#health_service_any_activity_accessible "health\_service\_any\_activity\_accessible"). Additionally, [`HealthServiceAccessibilityMaskAvailable`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#HealthServiceAccessibilityMaskAvailable "HealthServiceAccessibilityMaskAvailable") is no longer zero, so code that tried to compare with zero will need to be updated.

The following release notes list only changes since [3.9-beta7](https://developer.repebble.com/sdk/changelogs/3.9-beta7.md).

### Changes to Firmware

- Fixed [`health_service_get_minute_history`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#health_service_get_minute_history "health\_service\_get\_minute\_history") sometimes returning empty minutes.
- Fixed a bug causing the backlight to get stuck on at full intensity.
- Reduced watchface transition animation choppiness.
- Improved firmware stability.

### Changes to SDK

- Changed the values of ``HealthServiceAccessibilityMask` so that [`HealthServiceAccessibilityMaskAvailable`](https://developer.repebble.com/docs/c/Foundation/Event_Service/HealthService.md#HealthServiceAccessibilityMaskAvailable "HealthServiceAccessibilityMaskAvailable") is nonzero. This is an ABI incompatible change, and watchfaces must be recompiled with beta8 to run correctly on beta8 or later firmware.
- Added support for `require`ing a JSON file from PebbleKit JS, if the wscript is adjusted appropriately.