Bad Gyro Health, no movement on artificial horizon

[Agridroni (Antony)]

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SB_0000002 Critical service bulletin for Cubes Purchased between January 2019 to July 2019. DO NOT FLY

**Edit 3 April 2020 This issue is fully resolved by 3.6.12 but many updates have come since. Please keep up to date as this SB only relates to the IMU matter. Please see Ardupilot release notes for other Ardupilot matters covered in each release EDIT 11th December 2019 Due to SB_0000005 I’m updating this to ensure that you use 3.6.11 as a minimum No other changes Edit 28th July 2019 Please ensure you are using at least Arducopter 3.6.10 SB_0000002 Critical service bulletin for Cubes Purc…